Coating composition system, the preparation method, and the use thereof

Abstract

The present disclosure provides for a coating composition system suitable for forming a stain resistant and soft tactile texture coating onto a variety of substrate materials including plastic materials, metal materials, ceramic materials, and concrete materials. The coating composition system can be cured under mild curing conditions, and provides the resulting coating with excellent properties in terms of adhesion to the substrates, strength, and abrasion resistance. The present disclosure also provides for a method for preparing the coating composition system, and the use thereof.

Claims

1. A method for forming a stain resistant and soft tactile texture coating onto a substrate, comprising the steps of: forming a primer coating onto the substrate with a first composition comprising: a hydroxyl resin selected from one or more of the group consisting of alkyd resins, acrylic resins, polyester resins, polyurethane resins, epoxy resins, and modified silicone resins; a hardener resin having functional groups which react with hydroxyl groups of the hydroxyl resin; wherein the molar ratio of the hydroxyl groups of the hydroxyl resin is controlled to be excessive over the molar ratio of the functional groups of the hardener resin; forming a top coating onto the primer coating with a second composition comprising: an alkenyl containing polysiloxane of formula (I) ##STR00007## wherein R represents an alkyl group having 1 to 8 carbon atoms, or an alkenyl group having 2 to 10 carbon atoms; R.sub.1 and R.sub.3 each independently represents an alkyl group having 1 to 8 carbon atoms; R.sub.2 represents an alkenyl group having 2 to 10 carbon atoms; l+m+n+a is within the range from 200 to 15000; wherein the alkenyl content of the alkenyl-containing polysiloxane is not less than 0.2 mmol/g and not greater than 5.0 mmol/g; a Si—H bond containing polysiloxane of the formula (II) ##STR00008## wherein R.sub.4 and R.sub.5 each independently represents an alkyl group having 1 to 8 carbon atoms; R.sub.6 represents an alkyl group having 1 to 8 carbon atoms, or H; o+p+q+b is within the range from 5 to 500; a catalyst selected from one or more of the group consisting of platinum compounds, palladium compounds, rhodium compounds and ruthenium compounds.

2. The method according to claim 1, wherein the hardener of the first composition is selected from one or more of the group consisting of amino resins, isocyanates, and melamine resins.

3. The method according to claim 1, wherein a catalyst selected from one or more of the group consisting of organic cobalt catalysts, manganese catalysts, and organic tin catalysts is added into the first composition.

4. The method according to claim 3, wherein the amount of the catalyst is controlled to be within the range from 0 to 2.5 wt % in relation to the total weight of the hydroxyl resin.

5. The method according to claim 1, wherein an adhesion promoter selected from one or more of the group consisting of epoxy silanes, amino silanes, alkenyl silanes, titanate, zirconate, aluminate, polymers with a hydroxyl value of from 100 to 300 mgKOH/g or an acid value of from 20 to 200 mgKOH/g is added into the first composition.

6. The method according to claim 1, wherein the catalyst in the second composition is added in an amount within the range from 0.1 to 2.5 wt % in relation to the total weight of the alkenyl containing polysiloxane and the Si—H bond containing polysiloxane.

7. The method according to claim 1, wherein a hydrosilication inhibitor selected from one or more of the group consisting of alkynols and their derivatives, multi-alkenyl polysiloxanes, cyclic alkenyl silanes, amides, and maleates is further added into the second composition.

8. The method according to claim 7, wherein the amount of the hydrosilication inhibitor is controlled to be within the range from 0% to 5.0% % in relation to the total weight of the alkenyl containing polysiloxane and the Si—H bond containing polysiloxane.

Description

DETAILED DESCRIPTION

(1) The present disclosure provides for a coating composition system suitable for forming a stain resistant and soft tactile texture coating onto a variety of substrate materials including plastic materials, metal materials, ceramic materials, and concrete materials. The coating composition system can be cured under mild curing conditions, and provide the resulting coating with excellent properties in terms of adhesion to the substrates, strength, and abrasion resistance. The present disclosure also provides for a method for preparing the coating composition system, and the use thereof.

(2) According to the various embodiments herein, the coating composition system includes two separate coating compositions, wherein the first coating composition is to form a primer coating onto a substrate, and the second coating composition is to form a top coating onto the primer coating. The primer coating serves as a middle layer between the substrate and top coating film, to improve the adhesion of the coating layers to the substrate. During application, the first composition is applied onto a substrate and cured to form a primer coating, the second coating composition is consequently applied onto the primer coating and cured to form a top coating.

(3) The first coating composition according to various embodiments herein includes: a hydroxyl resin, a hardener resin having functional groups which react with hydroxyl groups of the hydroxyl resin, an optional catalyst for the reaction between the resins, an optional adhesion promoter, optional additives, fillers, extenders, pigments and toners.

(4) One or more resins with hydroxyl groups are used as the main ingredient of the first coating composition. Resins that are suitable for use herein include, but are not limited to alkyd resins, acrylic resins, polyester resins, polyurethane resins, epoxy resins, modified silicone resins, etc., the resins can be used alone or in combination.

(5) In addition to the hydroxyl resins, the first coating composition includes one or more hardener resins having functional groups which react with the hydroxyl resins. Resins that are suitable for use herein include, but are not limited to, amino resins, isocyanates, melamine resins, etc. The hardener resins can be selected from poly-isocyanates, dimer-isocyanates, trimer-isocyanates, and biuret-isocyanates, etc. The hardener resins can be used alone or in combination.

(6) In a further embodiment, the molar ratio of hydroxyl groups of the hydroxyl resin is excessive over the molar ratio of the functional groups of the hardener resin in the first composition. When the first coating composition is in contact with the second coating composition which will be discussed in later part of the description, the excessive hydroxyl groups may further react with other functional groups in the second coating composition, such as Si—H groups, as shown below:
˜˜Si—H+HO—R.fwdarw.˜˜Si—O—R+H.sub.2
The reaction between the excessive hydroxyl groups of the first coating composition and the other functional groups in the second coating composition helps to improve the adhesion between coating layers and the substrate.

(7) Different catalysts may be added into the first coating composition, to facilitate the reaction between the resins. The catalysts are selected according to the resin system used in the first coating composition. Catalysts that are suitable for use herein include, but are not limited to, organic cobalt catalysts and manganese catalysts for alkyd resins, organic tin catalysts for polyurethane resins.

(8) Adhesion promoters are added into the first coating composition to enhance the adhesion between the coating layers and the substrate. Adhesion promoters that are suitable for use herein include, but are not limited to, silanes with functional groups, such as epoxy silanes, amino silanes, and alkenyl silanes; organic metal compounds, such as titanates, zirconates, aluminates; resins with a hydroxyl value of from 100 mgKOH/g to 300 mgKOH/g, an acid value of from 20 mgKOH/g to 200 mgKOH/g, or phosphate resins.

(9) According to one embodiment, different additives can be further added into the first coating composition, such as levelling agent, defoaming agent etc. In some embodiments, fillers, extenders, pigments and toners can also be added into the first coating composition. The addition of these materials helps to, for instance, reduce the cost, provide the coating film with desired colour effects. It should be noticed that these materials are not necessarily added into the first coating composition. Fillers and extenders include, but are not limited to, CaCO.sub.3, talc powder, BaSO.sub.4, mica powder, kaolin powder, glass powder, etc. Pigments and toners include both inorganic pigments and organic pigments which are commonly used in coating industry. In order to provide the resulting coating film with a metal like visual effect or pearl like visual effect, metal powder and pearl powders can also be added into the first coating composition.

(10) There is no special requirement or limitation to solvents used in the first coating composition. Generally, solvents used in coating and paint industry, such as alcohols, ethers, esters, ketones, alkanes, aromatic hydrocarbons, or a combination there of, are suitable for use herein as well.

(11) The second coating composition according to various embodiments herein includes: an alkenyl containing polysiloxane, a Si—H bond containing polysiloxane, a hydrosilylation catalyst, an optional reinforcing agent, an optional reaction inhibitor, optional matting agents, haptic agents, fillers, extenders, and pigments.

(12) The curing mechanism of the second coating composition is based on an addition reaction curing process, wherein hydrosilylation takes place between the alkenyl groups of the alkenyl containing polysiloxane and the Si—H groups of the Si—H bond containing polysiloxane, at the presence of an organic precious metal catalyst.

(13) The alkenyl containing polysiloxane suitable for use in various embodiments herein is shown as the formula (I) below

(14) ##STR00005##

(15) wherein R represents an alkyl group having 1˜8 carbon atoms, or an alkenyl group having 2˜10 carbon atoms, which may be selected from, for example, methyl, ethyl, butyl, phenyl, etc., and vinyl, allyl, buyenyl, pentenyl, hexenyl, heptenyl, etc., or in some embodiments R is methyl or vinyl; R.sub.1 and R.sub.3 each independently represents an alkyl group having 1˜8 carbon atoms, which may be selected from, for example, methyl, ethyl, butyl, phenyl, etc., or in some embodiments R.sub.1 and R.sub.3 are methyl; R.sub.2 represents an alkenyl group having 2˜10 carbon atoms, which may be selected from, for example, vinyl, allyl, buyenyl, pentenyl, hexenyl, heptenyl groups, etc., or in some embodiments R.sub.2 is vinyl group; the sum of l+m+n+a is not less than 200, or in some embodiments not less than 500, and meanwhile the sum of l+m+n+a is not greater than 5000, or in some embodiments not greater than 2000.

(16) In a further embodiment, the alkenyl containing polysiloxane is selected such that the viscosity of the alkenyl containing polysiloxane is not less than 1000 Cp at 25° C., or in some embodiments not less than 5,000 Cp at 25° C., and meanwhile not greater than −500,000 Cp at 25° C., or in some embodiments not greater than 100,000 cP at 25° C. Unless otherwise specified, said viscosity of the alkenyl containing polysiloxane is measured according to ASTM D2225. It has been observed that alkenyl containing polysiloxanes within the defined ranges helped to improve the strength of resulting coatings. In another embodiment, the alkenyl containing polysiloxane is selected such that the alkenyl content is not less than 0.02 mmol/g, or in some embodiments not less than 0.2 mmol/g, and meanwhile, not greater than 5.0 mmol/g, or in some embodiments not greater than 3.0 mmol/g. It has been observed that alkenyl containing polysiloxanes within the defined ranges helped to improve the strength and tactile texture of the resulting coatings. Specifically, alkenyl containing polysiloxanes with an alkenyl content lower than 0.02 mmol/g resulted in soft coating layers with poor strength, and alkenyl containing polysiloxanes with an alkenyl content higher than 5.0 mmol/g resulted in hard coating layers with little soft feel and tactile texture.

(17) The Si—H bond containing polysiloxane suitable for use in herein is shown as the formula (II) below

(18) ##STR00006##

(19) wherein R.sub.4 and R.sub.5 each independently represents an alkyl group having 1˜8 carbon atoms, which may be selected from, for example, methyl, ethyl, butyl, phenyl, etc., or in some embodiments R.sub.4 and R.sub.5 are methyl; R.sub.6 represents an alkyl group having 1˜8 carbon atoms, or H; the sum of o+p+q+b is not less than 5, and not greater than 500;

(20) In a further embodiment, the Si—H bond containing polysiloxane is selected such that its viscosity is not less than 10 cP at 25° C., or in some embodiments not less than 20 cP at 25° C., and meanwhile not greater than 1000 cP at 25° C., or in some embodiments not greater than 500 cP at 25° C. It has been observed that Si—H bond containing polysiloxanes out of the defined range could hardly provide the resulting coatings with satisfying strength. In another embodiment, Si—H bond containing polysiloxane is selected such that its active hydrogen content is not less than 1.0 mmol/g, or in some embodiments not less than 5 mmol/g, and meanwhile not greater than 16.0 mmol/g, or in some embodiments not greater than 10 mmol/g. It has been observed that Si—H bond containing polysiloxanes with an active hydrogen content lower than 1.0 mmol/g resulted in soft coating layers with poor strength, and that Si—H bond containing polysiloxanes with an active hydrogen content higher than 16.0 mmol/g resulted in brittle coating layers with poor strength.

(21) According to one embodiment, a reinforcing agent is added into the second coating composition to further enhance the strength of resulting coatings. Generally, the reinforcing agent selected from one or more of the group including of silica, mono-functional auad-functional silicone resins (MQ silicone resins), polyhedral oligomeric silsesquioxane (POSS), carbon black, and fibers.

(22) As an option, any silica material containing SiO.sub.2 can be used as the reinforcing agent of the second coating composition in accordance with various embodiments herein. Preferably the silica material is selected from fumed silica, precipitated silica and quartz powders, which can be used alone or in combination. In some embodiments, silica material is selected from fumed silicas which have gone through surface treatment with silanes. In a further embodiment, the silica material is selected such that its BET surface area is between 500-400 m.sup.2/g, or in some embodiments between 150-300 m.sup.2/g, its primary particle size is between 5-50 nm, and its average particle size is below 20 um, or in some embodiments below 10 um.

(23) MQ silicone resins may also be added as the reinforcing agent into the second coating composition. When used herein, MQ silicone resins are meant to represent a broad range of hydrolytic condensation products of mono-functional silane (M) and Quad-functional silane (Q). Due to their three-dimensional network structure, MQ silicone resins may provide the resulting coatings with outstanding properties such as high hardness, antifriction, weathering ageing resistance, etc. and may help reinforce the resulting coatings. There is no special requirement or limitation to MQ resins for use as the reinforcing agent in the second coating composition in accordance with various embodiments herein. In some embodiments, the MQ resins contain alkenyl groups and active hydrogen groups.

(24) As another option, reinforcing agents like POSS, carbon black, fibers, etc., may also be used alone or in combination with the above mentioned silica materials and MQ silicone resins as the reinforcing agent in the second coating composition in accordance with various embodiments herein.

(25) To facilitate the hydrosilylation reaction between the alkenyl containing polysiloxane and the Si—H bond containing polysiloxane, addition reaction catalyst is further added into the second composition. According to the various embodiments herein, the addition reaction catalyst is not particularly limited as long as it promotes hydrosilylation reaction between an alkenyl group and a Si—H group. Catalysts that are suitable for use herein are selected from, but not limited to, platinum compounds, palladium compounds, rhodium compounds, and ruthenium compounds, wherein platinum compounds. In order to make the film to cure well at mild conditions, for instance, 0.5-2.0 hours at 70-100° C., an effective amount of the catalyst is between 0.1% to 2.5% in relation to the total weight of silicones (˜20-500 ppm Pt), or in some embodiments between 0.25-1.5% in relation to the total weight of silicones (˜50-300 ppm Pt). It has been observed that, when the amount of catalyst was lower than 0.1%, for the coating composition could be hardly well cured at low temperature, and the resulting coating strength was bad. When the amount of catalyst was higher than 2.5%, the hydrosilylation reaction was conducted at a fast rate, and thus impacts the pot life for application.

(26) According to one embodiment, a reaction inhibitor is further added into the second coating composition, to adjust the reaction speed of hydrosilylation reaction, which is usually fast even at room temperature. In order to prolong the pot life of the second coating composition, suitable amount of inhibitor is added into the second coating composition in accordance with various embodiments herein. Hydrosilication inhibitors that are suitable for use herein are selected from, but not limited to, alkynols and the derivatives thereof, multi alkenyl polysiloxanes, cyclic alkenyl silanes, amides, maleates, etc. In some embodiments, multi vinyl polysiloxane and cyclic vinyl silanes are suitable as they are more compatible with silicone rubber. Suitable amount of the reaction inhibitor is about 0.5%-5.0% in relation to the total weight of silicones.

(27) According to one embodiment, matting agents and/or haptic agents are further added into the second coating composition, to matt the film and make it feel smooth and slippery. Matting agents and/or haptic agents include, but are not limited to, silicas such as fumed silica and precipitated silica, wax powders such as PE wax, PP wax, PTFE wax, polyamide wax, etc. These matting agents and/or haptic agents can be used alone or in combination.

(28) According to one embodiment, fillers, extenders, pigments and toners can also be added into the second coating composition. The addition of these materials helps to, for instance, reduce the cost, provide the coating film with desired colour effects. It should be noticed that these materials are not always necessary for the second coating composition. Fillers and extenders include, but are not limited to, CaCO.sub.3, talc powder, BaSO.sub.4, mica powder, kaolin powder, glass powder, etc. Pigments and toners include both inorganic pigments and organic pigments which are commonly used in coating industry. In order to provide the resulting coating film with a metal like visual effect or pearl like visual effect, metal powder and pearl powders can also be added into the second coating composition.

(29) There is no special requirement or limitation to solvents used in the second coating composition. Generally, solvents used in coating and paint industry, such as alcohols, ethers, esters, ketones, alkanes, aromatic hydrocarbons, or a combination there of, are suitable for use in the herein as well.

(30) In another aspect, a method for preparing the hybrid coating composition system according to various embodiments herein is provided, which includes the steps of:

(31) Preparation of the First Coating Composition

(32) Part 1—coating: in a kettle, add suitable amount of solvent and start agitation, then add resins, fillers and pigments, additives one by one during agitation at medium speed, ca. 300-500 RPM, for about 10-30 minutes respectively.

(33) Raise the speed to about 2000-3000 RPM and disperse the mixture for about 1 hour, or for better dispersion, sand mill for about 10-30 minutes could be another choice. The viscosity is between 60-100 KU for better dispersion, and during the agitation, cooling water may be needed to cool down the mixture. If no powder is used in the system, go to next step directly.

(34) After dispersion or sand milling, low the speed to about 300-500 RPM and add the catalyst and residual solvents one by one during agitation and agitate for 10-30 minutes respectively. Then stop agitation and package the coating.

(35) Part 2—hardener: in another kettle, add suitable amount of solvent and start agitation, then add hardener resins and agitation for about 10-30 minutes at medium speed, ca. 300-500 RPM. Then stop agitation and package the hardener.

(36) Preparation of the Second Coating Composition

(37) Part 1—coating: in a kettle, add suitable amount of solvent and start agitation, then add alkenyl-containing polysiloxanes, reinforcing agent, matting agents and haptic agents, fillers and pigments, additives one by one during agitation at medium speed, ca. 300-500 RPM, for about 10-30 minutes respectively.

(38) Then raise the speed to about 2000-3000 RPM and disperse the mixture for about 1 hour, or for better dispersion, sand mill for about 10-30 minutes could be another choice. The viscosity is between 60-100 KU for better dispersion, and during the agitation, cooling water may be needed to cool down the mixture.

(39) After dispersion or sand milling, low the speed to about 300-500 RPM and add the inhibitors, catalyst and residual solvents one by one during agitation and agitate for 10-30 minutes respectively. Then stop agitation and package the coating.

(40) Part 2—hardener: in another kettle, add suitable amount of solvent and start agitation, then add hydrogen methyl polysiloxanes and agitation for about 10-30 minutes at medium speed, ca. 300-500 RPM. Then stop agitation and package the hardener.

(41) In another aspect, the application method of the hybrid coating composition system according to various embodiments is provided, which includes the steps of:

(42) Application of the First Coating Composition

(43) Mix part 1 and part 2 in ratio, hydroxyl groups is excessive because a little more hydroxyl groups is needed to react with the topcoat components. Then dilute the mixture with the above mentioned solvents to suitable viscosity. The diluted coating sample could applied on the primer by methods of spray coating, brush coating, dip coating, spin coating, roll coating, curtain coating and shower coating, etc. Spray coating is utilized for consumer electronics and automobiles industry. Before application, the substrate maybe need some surface cleaning with alcohols or surface treatment like sanding or acid/alkali washing, etc.

(44) Put the coated parts in the oven, the curing condition is 5-30 minutes at 70-100 C.

(45) The dry film thickness is between 5-100 um, or in some embodiments 10-30 um, or in some embodiments 15-20 um.

(46) Application of the Second Coating Composition

(47) Mix part 1 and part 2 in ratio, for better curing the ration of alkenyl groups in part 1 to Si—H groups in part 2 can be between 1:1 to 1:3, because there are some side reactions for Si—H, and furthermore, a little more Si—H is needed to react with the primer. Then dilute the mixture with the above mentioned solvents to suitable viscosity. The diluted coating sample could applied on the primer by methods of spray coating, brush coating, dip coating, spin coating, roll coating, curtain coating and shower coating, etc.

(48) Put the coated parts in the oven, for plastic substrates, the curing condition could be 0.5-2 hours at 70-100 C. For metal substrates, the curing condition could be 0.5-2 hours at 70-100 C or 5-30 minutes at 150-180 C.

(49) The dry film thickness is between 10-100 um, or in some embodiments 30-70 um, or in some embodiments 40-60 um.

(50) In yet another aspect, uses of the hybrid coating composition system according to various embodiments herein are provided. The hybrid coating composition system according to the present disclosure is suitable for use in, for example, consumer electronic devices. Specifically, the devices include but are not limited to mobile phones, tablets, personal computers, laptop computers, electronic readers, music players, computer accessories (monitors, mouse, keyboards, portable hard disks, printers), televisions, game consoles, global positioning system devices, wearable devices, and the like. Other applications include automotive interior and exterior parts, and home appliances.

EXAMPLES

(51) Various embodiments herein will be elucidated with reference to the following examples. These examples are intended to be illustrative, but are not to be construed as limiting in any manner the scope thereof.

(52) In the following examples, formulation changes in terms of content of functional groups, molecular weight, reinforcing agents, amount of catalyst, etc., were tested and the results were shown below.

Examples 1-4: Test of Vinyl Content and Active Hydrogen Content of Silicone

(53) Coating composition systems with silicones having different vinyl contents and hydrogen contents were prepared according to table 1, respectively. They were applied onto a substrate of polycarbonate and acrylonitrile butadiene styrene copolymer, and then cured for further tests. It was seen that the listed formulas all achieved good test results, see table 2.

(54) TABLE-US-00001 TABLE 1 Examples to study the Impact of vinyl content and active hydrogen content of silicone Example 1 Example 2 Example 3 Example 4 Topcoat System Vinyl methyl polysiloxane-50000 cP, vinyl 100.0 N/A N/A N/A content 0.5 wt % (~0.2 mmol/g) Vinyl methyl polysiloxane-50000 cP, vinyl N/A 100.0 N/A N/A content 2 wt % (~0.8 mmol/g) Vinyl methyl polysiloxane-50000 cP, vinyl N/A N/A 100.0 N/A content 5 wt % (~2 mmol/g) Vinyl methyl polysiloxane-50000 cP, vinyl N/A N/A N/A 100.0 content 8 wt % (~0.32 mmol/g) Hydrogen methyl polysiloxane-50 cP, active 10.0 N/A N/A N/A hydrogen content 0.5 wt % (~5 mmol/g) Hydrogen methyl polysiloxane-50 cP, active N/A 20.0 N/A N/A hydrogen content 0.8 wt % (~8 mmol/g) Hydrogen methyl polysiloxane-50 cP, active N/A NA 30.0 50.0 hydrogen content 1.6 wt % (~16 mmol/g) Reinforcing agent - fumed silica 15.0 15.0 15.0 15.0 Inhibitor 1.5 2.0 2.0 2.0 Platinum Catalyst 1.0 1.0 1.0 1.0 Additives: matting agent 10.0 10.0 10.0 10.0 Additives: slippery agent, wax powder 2.0 2.0 2.0 2.0 Solvents 200.0 200.0 200.0 200.0 Primer system Resins: polyester polyols 100.0 100.0 100.0 100.0 Hardeners: isocyanate 15.0 15.0 15.0 15.0 Adhesion promoters/resins 20.0 20.0 20.0 20.0 Catalyst: Tin compound 1.0 1.0 1.0 1.0 Additives 1.0 1.0 1.0 1.0 Solvents 150.0 150.0 150.0 150.0

(55) TABLE-US-00002 TABLE 2 Test results of Example 1-4 Example 1 Example 2 Example 3 Example 4 Appearance Low gloss, Low gloss, Low gloss, Low gloss, soft feel, soft feel, soft feel, soft feel, smooth and smooth and smooth and smooth and slippery slippery slippery slippery Cross-cut Adhesion, 5B 5B 5B 5B ASTM 3359; 1.0 mm × 1.0 mm Abrasion-RCA Pass Pass Pass Pass 175 g, 250 cycles Abrasion-Alcohol Pass Pass Pass Pass 250 g, 250 rubs MEK resistance, Pass Pass Pass Pass 23° C., 3 minutes Hot water resistance, 0.5 Pass Pass Pass Pass hour at 95° C. Humidity/Temperature Pass Pass Pass Pass test, 80 C., 95% RH, 96 hours Thermal shock, −40° C./ Pass Pass Pass Pass 50% and 85° C./75% 48 cycles, 4 days QUV, ASTM G154 UVA- Pass Pass Pass Pass 340, 0.71 W/m2/nm ultraviolet lamp and 60° C., 96 hours Impact resistance, 1 kg, Pass Pass Pass Pass 50 cm Artificial sweat Pass Pass Pass Pass resistance Permanent mark pen, 1 Pass Pass Pass Pass hour at 23° C. Cosmetics-Foundation Pass Pass Pass Pass cream Cosmetics-Lipstick Pass Pass Pass Pass Cosmetics-hand cream, 1 Pass Pass Pass Pass hour at 23° C. Cosmetics-sunscreen Pass Pass Pass Pass lotion, 1 hour at 23° C. Coffee, 1 hour at 23° C. Pass Pass Pass Pass Beer, 1 hour at 23° C. Pass Pass Pass Pass Red wine, 1 hour at 23° C. Pass Pass Pass Pass Mustard, 1 hour at 23° C. Pass Pass Pass Pass Ketchup, 1 hour at 23° C. Pass Pass Pass Pass Coca-cola, 1 hour at 23° C. Pass Pass Pass Pass Olive Oil, 1 hour at 23° C. Pass Pass Pass Pass

Examples 5-8, Test of Mw and/or Viscosity of Vinyl Silicone and Hydrogen Silicone

(56) Coating composition systems with vinyl silicones and hydrogen silicones having different molecular weights or viscosities were prepared according to table 3, respectively. They were applied onto a substrate of polycarbonate and acrylonitrile butadiene styrene copolymer, and then cured for further tests. It was seen that the listed formulas all achieved good test results, see table 4.

(57) TABLE-US-00003 TABLE 3 Examples to study the Impact of Mw or viscosity of vinyl silicone and hydrogen silicone Example 5 Example 6 Example 7 Example 8 Topcoat Vinyl methyl polysiloxane-5000 cP, vinyl 100.0 NA NA NA content 2 wt % (~0.8 mmol/g) Vinyl methyl polysiloxane-20000 cP, vinyl NA 100.0 NA NA content 2 wt % (~0.8 mmol/g) Vinyl methyl polysiloxane-100000 cP, vinyl NA NA 100.0 NA content 5 wt % (~2 mmol/g) Vinyl methyl polysiloxane-300000 cP, vinyl NA NA NA 100.0 content 8 wt % (~0.32 mmol/g) Hydrogen methyl polysiloxane-20 cP, active 20.0 NA NA NA hydrogen content 0.8 wt % (~8 mmol/g) Hydrogen methyl polysiloxane-50 cP, active NA 20.0 NA NA hydrogen content 0.8 wt % (~8 mmol/g) Hydrogen methyl polysiloxane-100 cP, active NA NA 20.0 NA hydrogen content 0.8 wt % (~8 mmol/g) Hydrogen methyl polysiloxane-500 cP, active NA NA NA 20.0 hydrogen content 0.8 wt % (~8 mmol/g) Reinforcing agent - fumed silica 15.0 15.0 15.0 15.0 Inhibitor 2.0 2.0 2.0 2.0 Platinum Catalyst 1.0 1.0 1.0 1.0 Additives: matting agent 10.0 10.0 10.0 10.0 Additives: silipery agent, wax powder 2.0 2.0 2.0 2.0 Solvents 200.0 200.0 200.0 200.0 Primer system Resins: polyester polyols 100.0 100.0 100.0 100.0 Hardeners: isocyanate 15.0 15.0 15.0 15.0 Adhesion promoters/resins 20.0 20.0 20.0 20.0 Catalyst: Tin compound 1.0 1.0 1.0 1.0 Additives 1.0 1.0 1.0 1.0 Solvents 150.0 150.0 150.0 150.0

(58) TABLE-US-00004 TABLE 4 Test results of Example 5-8 Example 5 Example 6 Example 7 Example 8 Appearance Low gloss, soft Low gloss, soft Low gloss, soft Low gloss, soft feel, smooth and feel, smooth and feel, smooth and feel, smooth and slippery slippery slippery slippery Cross-cut Adhesion, 5B 5B 5B 5B ASTM 3359; 1.0 mm × 1.0 mm Abrasion-RCA Pass Pass Pass Pass 175 g, 250 cycles Abrasion-Alcohol Pass Pass Pass Pass 250 g, 250 rubs MEK resistance, Pass Pass Pass Pass 23° C., 3 minutes Hot water resistance, 0.5 Pass Pass Pass Pass hour at 95 C. Humidity/Temperature Pass Pass Pass Pass test, 80° C., 95% RH, 96 hours Thermal shock, −40° C./ Pass Pass Pass Pass 50% and 85° C./75% 48 cycles, 4 days QUV, ASTM G154 UVA- Pass Pass Pass Pass 340, 0.71 W/m2/nm ultraviolet lamp and 60° C., 96 hours Impact resistance, 1 kg, Pass Pass Pass Pass 50 cm Artificial sweat Pass Pass Pass Pass resistance Permanent mark pen, 1 Pass Pass Pass Pass hour at 23° C. Cosmetics-Foundation Pass Pass Pass Pass cream Cosmetics-Lipstick Pass Pass Pass Pass Cosmetics-hand cream, 1 Pass Pass Pass Pass hour at 23° C. Cosmetics-sunscreen Pass Pass Pass Pass lotion, 1 hour at 23° C. Coffee, 1 hour at 23° C. Pass Pass Pass Pass Beer, 1 hour at 23° C. Pass Pass Pass Pass Red wine, 1 hour at 23° C. Pass Pass Pass Pass Mustard, 1 hour at 23° C. Pass Pass Pass Pass Ketchup, 1 hour at 23° C. Pass Pass Pass Pass Coca-cola, 1 hour at 23° C. Pass Pass Pass Pass Olive Oil, 1 hour at 23° C. Pass Pass Pass Pass

Examples 9-12 Test of Reinforcing Agent and Matting Silica

(59) Coating composition systems with different reinforcing agents and dosages were prepared according to table 5, respectively. They were applied onto a substrate of polycarbonate and acrylonitrile butadiene styrene copolymer, and then cured for further tests. It was seen that the listed formulas all achieved good test results, see table 6.

(60) TABLE-US-00005 TABLE 5 Examples to study the impact of reinforcing agent and matting silica Example Example Example Example 9 10 11 12 Topcoat Vinyl methyl 100.0 100.0 100.0 100.0 polysiloxane-50000 cP, vinyl content 0.5 wt % (~0.2 mmol/g) Hydrogen methyl 10.0 10.0 10.0 10.0 polysiloxane-50 cP, active hydrogen content 0.5 wt % (~5 mmol/g) Reinforcing agent - 30.0 5.0 NA NA fumed silica Reinforcing agent - NA NA 40.0 NA MQ resin Reinforcing agent-Vinyl NA NA NA 40.0 MQ resin, 1.0% vinyl Inhibitor 1.5 1.5 1.5 1.5 Platinum Catalyst 1.0 1.0 1.0 1.0 Additives: matting agent 5.0 30.0 10.0 10.0 Additives: silipery agent, 2.0 2.0 2.0 2.0 wax powder Solvents 200.0 200.0 200.0 200.0 Primer system Resins: polyester polyols 100.0 100.0 100.0 100.0 Hardeners: isocyanate 15.0 15.0 15.0 15.0 Adhesion 20.0 20.0 20.0 20.0 promoters/resins Catalyst: Tin compound 1.0 1.0 1.0 1.0 Additives 1.0 1.0 1.0 1.0 Solvents 150.0 150.0 150.0 150.0

(61) TABLE-US-00006 TABLE 6 Test results of Example 9-12 Example 9 Example 10 Example 11 Example 12 Appearance Low gloss, Low gloss, Low gloss, Low gloss, soft feel, soft feel, soft feel, soft feel, smooth and smooth and smooth and smooth and slippery slippery slippery slippery Cross-cut Adhesion, 5B 5B 5B 5B ASTM 3359; 1.0 mm × 1.0 mm Abrasion-RCA Pass Pass Pass Pass 175 g, 250 cycles Abrasion-Alcohol Pass Pass Pass Pass 250 g, 250 rubs MEK resistance, Pass Pass Pass Pass 23° C., 3 minutes Hot water resistance, 0.5 Pass Pass Pass Pass hour at 95 C. Humidity/Temperature Pass Pass Pass Pass test, 80 C., 95% RH, 96 hours Thermal shock, −40° C./ Pass Pass Pass Pass 50% and 85° C./75% 48 cycles, 4 days QUV, ASTM G154 UVA- Pass Pass Pass Pass 340, 0.71 W/m2/nm ultraviolet lamp and 60° C., 96 hours Impact resistance, 1 kg, Pass Pass Pass Pass 50 cm Artificial sweat resistance Pass Pass Pass Pass Permanent mark pen, 1 Pass Pass Pass Pass hour at 23° C. Cosmetics-Foundation Pass Pass Pass Pass cream Cosmetics-Lipstick Pass Pass Pass Pass Cosmetics-hand cream, 1 Pass Pass Pass Pass hour at 23° C. Cosmetics-sunscreen Pass Pass Pass Pass lotion, 1 hour at 23° C. Coffee, 1 hour at 23° C. Pass Pass Pass Pass Beer, 1 hour at 23° C. Pass Pass Pass Pass Red wine, 1 hour at 23° C. Pass Pass Pass Pass Mustard, 1 hour at 23° C. Pass Pass Pass Pass Ketchup, 1 hour at 23° C. Pass Pass Pass Pass Coca-cola, 1 hour at 23° C. Pass Pass Pass Pass Olive Oil, 1 hour at 23° C. Pass Pass Pass Pass

Examples 13-16 Test of Platinum Catalyst and Primer

(62) Coating composition systems with different platinum dosages, and primer hardener dosages were prepared according to table 7, respectively. They were applied onto a substrate of polycarbonate and acrylonitrile butadiene styrene copolymer, and then cured for further tests. It was seen that the listed formulas all achieved good test results, see table 8.

(63) TABLE-US-00007 TABLE 7 Examples to study the impact of platinum catalyst and primer Example Example Example Example 13 14 15 16 Topcoat Vinyl methyl 100.0 100.0 100.0 100.0 polysiloxane-50000 cP, vinyl content 0.5 wt % (~0.2 mmol/g) Hydrogen methyl 10.0 10.0 10.0 10.0 polysiloxane-50 cP, active hydrogen content 0.5 wt % (~5 mmol/g) Reinforcing agent - 15.0 15.0 15.0 15.0 fumed silica Inhibitor 1.5 1.5 1.5 1.5 Platinum Catalyst 0.2 1.0 1.0 1.0 Additives: matting agent 10.0 10.0 10.0 10.0 Additives: slippery agent, 2.0 2.0 2.0 2.0 wax powder Solvents 200.0 200.0 200.0 200.0 Primer system Resins: polyester polyols 100.0 100.0 100.0 100.0 Hardeners: isocyanate 15.0 10.0 30.0 15.0 Adhesion 20.0 20.0 20.0 30.0 promoters/resins Catalyst: Tin compound 1.0 1.0 1.0 1.0 Additives 1.0 1.0 1.0 1.0 Solvents 150.0 150.0 150.0 150.0

(64) TABLE-US-00008 TABLE 8 Test results of Example 13-16 Example 13 Example 14 Example 15 Example 16 Appearance Low gloss, Low gloss, Low gloss, Low gloss, soft feel, soft feel, soft feel, soft feel, smooth and smooth and smooth and smooth and slippery slippery slippery slippery Cross-cut Adhesion, 5B 5B 5B 5B ASTM 3359; 1.0 mm × 1.0 mm Abrasion-RCA Pass Pass Pass Pass 175 g, 250 cycles Abrasion-Alcohol Pass Pass Pass Pass 250 g, 250 rubs MEK resistance, Pass Pass Pass Pass 23° C., 3 minutes Hot water resistance, 0.5 Pass Pass Pass Pass hour at 95° C. Humidity/Temperature Pass Pass Pass Pass test, 80 C., 95% RH, 96 hours Thermal shock, −40° C./ Pass Pass Pass Pass 50% and 85° C./75% 48 cycles, 4 days QUV, ASTM G154 UVA- Pass Pass Pass Pass 340, 0.71 W/m2/nm ultraviolet lamp and 60° C., 96 hours Impact resistance, 1 kg, Pass Pass Pass Pass 50 cm Artificial sweat resistance Pass Pass Pass Pass Permanent mark pen, 1 Pass Pass Pass Pass hour at 23° C. Cosmetics-Foundation Pass Pass Pass Pass cream Cosmetics-Lipstick Pass Pass Pass Pass Cosmetics-hand cream, 1 Pass Pass Pass Pass hour at 23° C. Cosmetics-sunscreen Pass Pass Pass Pass lotion, 1 hour at 23° C. Coffee, 1 hour at 23° C. Pass Pass Pass Pass Beer, 1 hour at 23° C. Pass Pass Pass Pass Red wine, 1 hour at 23° C. Pass Pass Pass Pass Mustard, 1 hour at 23° C. Pass Pass Pass Pass Ketchup, 1 hour at 23° C. Pass Pass Pass Pass Coca-cola, 1 hour at 23° C. Pass Pass Pass Pass Olive Oil, 1 hour at 23° C. Pass Pass Pass Pass