Inorganic dry powder building coating and preparing method therefor

Abstract

An inorganic dry powder building coating comprises inorganic gel system consisting of alkali metal silicates and hardener, organic re-dispersed emulsoid powder, and may also comprise filler, pigment and auxiliaries. The coating of the present invention has good storage stability, scrub resistance, weather resistance, and is easy to transport. No salting-out and no harmful substances, such as volatile organic compound, benzene, formaldehyde, heavy metal, appear after being solidified to perform film.

Claims

1. An inorganic dry-powdered architectural paint, wherein the inorganic dry powdered architectural paint comprises: an alkali metal silicate comprising lithium silicate; a hardening agent; and an organic re-dispersible emulsion powder; wherein the hardening agent is selected from substances that form an inorganic gel system with the alkali metal silicate; wherein the organic re-dispersible emulsion powder is prepared from a polymer emulsion by drying; wherein the polymer is one or a mixture of several of homopolymer, binary copolymer, ternary copolymer from alkene, alkadiene, acrylic acid, acrylic ester, methacrylic acid, methacrylate ester and vinyl aliphatate ester; wherein the vinyl aliphatate ester is represented by RCOOCHCH.sub.2, and the R is straight or branched C1-C20 alkyl; and wherein the hardening agent comprises one or a mixture of several of Al.sub.2O.sub.3, ZnO, MgO, sodium fluorosilicate, potassium fluorosilicate, lithium fluorosilicate, magnesium fluorosilicate, aluminum fluorosilicate.

2. The inorganic dry-powdered architectural paint according claim 1, wherein a weight ratio of the alkali metal silicate, the hardening agent, and the re-dispersible emulsion powder is: TABLE-US-00032 alkali metal silicate 50-400; hardening agent 1-100; and re-dispersible emulsion powder 20-250.

3. The inorganic dry-powdered architectural paint according to claim 1, wherein the inorganic dry-powdered architectural paint further contains filler and/or pigment.

4. The inorganic dry-powdered architectural paint according to claim 3, wherein the filler contains one or a mixture of several of silicon oxide, silicate salt, carbonate salt, carbide, sulfate, sulfide, nitride, metal oxide, metal hydroxide and metal.

5. The inorganic dry-powdered architectural paint according to claim 3, wherein the pigment contains one or a mixture of several of titanium pigment, iron oxide red, iron oxide yellow, iron oxide black, lithopone, carbon black, cadmium red, cadmium yellow, lead chromium yellow, chromium oxide green, iron blue, zinc oxide, cobalt blue, and the pigment with a structure of phthalocyanin, azo type pigment, the pigment with a structure of quinacridinone.

6. The inorganic dry-powdered architectural paint according to claim 3, wherein a weight ratio of the components is: TABLE-US-00033 alkali metal silicate 50-400; hardening agent 1-100; re-dispersible emulsion powder 20-250; pigment 0-300; and/or filler 300~700.

7. The inorganic dry-powdered architectural paint according to claim 1, wherein the inorganic dry-powdered architectural paint further contains an auxiliary suitable for paint field.

8. The inorganic dry-powdered architectural paint according to claim 7, wherein a weight ratio of the components is: TABLE-US-00034 alkali metal silicate 50-400; hardening agent 1-100; re-dispersible emulsion powder 20-250; pigment 0-300; and/or filler 300~700; and/or auxiliary 0~20.

9. A method of producing the inorganic dry-powdered architectural paint according to claim 1, wherein the alkali metal silicate, the hardening agent and there-dispersible emulsion powder are dry mixed, optionally, together with a pigment powder, and/or a filler powder, and/or an auxiliary powder.

10. The inorganic dry-powdered architectural paint according to claim 1, wherein the polymer is a binary copolymer or ternary copolymer, and wherein the binary copolymer or ternary copolymer is formed from alkene, alkadiene, acrylic acid, or acrylic ester.

11. The inorganic dry-powdered architectural paint according to claim 1, wherein the polymer is a binary copolymer or ternary copolymer, and wherein the binary copolymer or ternary copolymer is formed from alkene, or alkadiene.

12. The inorganic dry-powdered architectural paint according to claim 1, wherein the polymer is poly(acrylate ester).

13. The inorganic dry-powdered architectural paint according to claim 1, wherein the polymer is PMMA (poly(methyl methacrylic acid).

14. The inorganic dry-powdered architectural paint according to claim 1, wherein the polymer is vinyl acetate/ethylene copolymer.

15. The inorganic dry-powdered architectural paint according to claim 1, wherein the polymer is styrene/butadiene copolymer.

16. The inorganic dry-powdered architectural paint according to claim 1, wherein the polymer is poly(acrylic acid).

17. The inorganic dry-powdered architectural paint according to claim 1, wherein the polymer is ethylene/vinyl chloride/vinyl laurate copolymer.

Description

DETAILED DESCRIPTION OF THE INVENTION

(1) The inorganic dry-powdered architectural paint of the present invention includes:

(2) 1) alkali metal silicate salt, can be metal silicate salt, wherein, the metal is selected from IA group in Mendeleev's periodic table; such as one or mixture of several of sodium silicate, potassium silicate and lithium silicate;

(3) 2) hardening agent, includes one or mixture of several of fluorosilicate, phosphate (including condensed phosphate salt), borate, metallic oxide and metal hydroxide;

(4) wherein, the metal in said metallic oxide and metal hydroxide is selected form IA, IIA, IIIA, IIB and IB groups in Mendeleev's periodic table; wherein, the said fluorosilicate, phosphate, borate are metal salts, wherein, the metal is selected form IA, IIA, IIIA, IIB and IB groups in Mendeleev's periodic table; wherein, the examples of the hardening agent includes one or mixture of several of Al.sub.2O.sub.3, ZnO, MgO, sodium fluorosilicate, potassium fluorosilicate, lithium fluorosilicate, magnesium fluorosilicate, aluminum fluorosilicate, aluminum phosphate, potassium phosphate, sodium phosphate, magnesium phosphate, condensed aluminum phosphate, aluminum borate, potassium borate, sodium borate, magnesium borate; wherein, the components 1) and 2) form an inorganic gel system;
3) re-dispersible emulsion powder, wherein, the re-dispersible is obtained from polymer emulsion by drying, and the polymer can be one or mixture of several homo-polymer, binary copolymer and ternary copolymer of alkene, alkadiene, acrylic acid, acrylate ester, methacrylic acid, methacrylate ester or vinyl aliphatate ester; wherein, the vinyl aliphatate ester is represented by RCOOCHCH.sub.2, and the R is hydrocarbonyl, preferably is alkyl, more preferably is straight or branched C1-C20 alkyl; the example of the polymer includes poly(vinyl acetate), vinyl acetate/ethylene copolymer (EVA), vinyl acetate/propylene copolymer, vinyl acetate/butadiene copolymer, vinyl acetate/styrene copolymer, styrene/butadiene copolymer, acrylate/styrene copolymer, acrylate ester/vinyl acetate/vinyl higher aliphatate ester copolymer, vinyl acetate/higher aliphatate ester copolymer, ethylene/vinyl chloride/vinyl laurate ester copolymer, vinyl acetate/ethylene/vinyl higher aliphatate ester copolymer, poly(acrylic acid), poly(acrylate ester), poly(methacrylic acid), poly(mathacrylate ester), and so on.

(5) The three components above-mentioned are key ingredient of the inorganic dry-powdered architectural paint of the present invention. However, the components 4) filler and/or 5) pigment can be added:

(6) 4) filler, used for improving the strength of the inorganic dry-powdered architectural paint, wherein, the filler can be inorganic filler, preferably, including one or mixture of several of silicon oxide, silicate salt, carbonate salt, carbide, sulfate, sulfide, nitride, metal oxide, metal hydroxide and metal; for example, silicon nitride, boron nitride, wollastonite, aluminum oxide, barium sulfate, calcium carbonate (can be light calcium carbonate or ground calcium carbonate), talcum powder, mica powder, bentonite, sierozem powder, aluminum silicate (prefer to ultra-fine aluminum silicate), quartz powder, calcite, and so on:
5) pigment, used for providing required colour for the inorganic dry-powdered architectural paint, wherein, the pigment can be organic or inorganic pigment with white or light colour, or any other colour. The example of inorganic pigment is, such as, titanium pigment, iron oxide red, iron oxide yellow, iron oxide black, lithopone (coprecipitate of zinc sulfide and barium sulfate), carbon black, cadmium red, cadmium yellow, lead chromium yellow, chromium oxide green, iron blue, zinc oxide, cobalt blue. The example of the organic pigment is, such as, the pigment with structure of phthalocyanin, azo type pigment, the pigment with structure of quinacridinone.

(7) However, according to the requirement, an auxiliary which is suitable for paint can be added, such as defoaming agents, dispersing agent, thickening agent, wetting agent, coalescent, anti-mildew agent, hydrophobic agent.

(8) The inorganic dry-powdered architectural paint can be obtained from the above-mentioned components by dry mixing. To obtain a good property of the inorganic dry-powdered architectural paint, the weight ratio of the above-mentioned components is:

(9) TABLE-US-00009 alkali metal silicate 50-400; hardening agent 1-100; re-dispersible emulsion powder 20-250; and, optionally, pigment 0-300; and/or filler 300-700; and/or auxiliary 0-20.

(10) More preferably, the weight ratio of the above-mentioned components is:

(11) TABLE-US-00010 alkali metal silicate 100-350; hardening agent 3-80; re-dispersible emulsion powder 30-200; and, optionally, pigment 0-250; and/or filler 350-600; and/or auxiliary 1-15.

(12) More preferably, the weight ratio of the above-mentioned components is:

(13) TABLE-US-00011 alkali metal silicate 100-250; hardening agent 5-50; re-dispersible emulsion powder 50-150; and, optionally, pigment 0-150; and/or filler 400-550; and/or auxiliary 2-10.

(14) Most preferably, the weight ratio of the above-mentioned components is:

(15) TABLE-US-00012 alkali metal silicate 100-150; hardening agent 10-30; re-dispersible emulsion powder 70-120; and, optionally, pigment 50-100; and/or filler 450-500; and/or auxiliary 5-7.

(16) The inorganic dry-powdered architectural paint of the present invention and the method of producing the same will be described in more detailed in the following examples, to make the present invention to be more comprehensible. However, it should not be understand that the following examples will limit the scope of the present invention.

Example 1 (Exq1)

(17) In this example, the components are:

(18) TABLE-US-00013 potassium silicate 100 g; aluminum phosphate 5 g; EVA re-dispersible emulsion powder 50 g; CaCO.sub.3 400 g; defoaming agent 1 g; thickening agent 1 g.

(19) The above-mentioned components are dry mixed to obtain the inorganic dry-powdered architectural paint. The obtained paint is added into water and stirred. Then the mixture is operated for spray coating or brush coating. The property of the coating is measured according to the China Construction Industry Standard JG/T 26-2002, Inorganic Building Coating for External Wall, and the amount of VOC is measured according to China standard GB 18582-2008, Indoor Decorating and Refurbishing MaterialsLimit of Harmful substances of interior architectural coatings. The measurement results are list in table 1 and table 2 separately.

Example 2 (Exq2)

(20) In this example, the components are:

(21) TABLE-US-00014 potassium silicate 250 g; aluminum phosphate 50 g; EVA re-dispersible emulsion powder 150 g; TiO.sub.2 150 g; CaCO.sub.3 550 g; defoaming agent 5 g; thickening agent 5 g.

(22) The above-mentioned components are dry mixed to obtain the inorganic dry-powdered architectural paint. The obtained paint is added into water and stirred. Then the mixture is operated for spray coating or brush coating. The property of the coating is measured according to the China Construction Industry Standard JG/T 26-2002, Inorganic Building Coating for External Wall, and the amount of VOC is measured according to China standard GB 18582-2008, Indoor Decorating and Refurbishing MaterialsLimit of Harmful substances of interior architectural coatings. The measurement results are list in table 1 and table 2 separately.

Example 3 (Exq3)

(23) In this example, the components are:

(24) TABLE-US-00015 sodium silicate 233 g; ZnO 46 g; EVA re-dispersible emulsion powder 134 g; iron oxide yellow 128 g; wollastonite 534 g; defoaming agent 3 g; thickening agent 2 g.

(25) The above-mentioned components are dry mixed to obtain the inorganic dry-powdered architectural paint. The obtained paint is added into water and stirred. Then the mixture is operated for spray coating or brush coating. The property of the coating is measured according to the China Construction Industry Standard JG/T 26-2002, Inorganic Building Coating for External Wall, and the amount of VOC is measured according to China standard GB 18582-2008, Indoor Decorating and Refurbishing MaterialsLimit of Harmful substances of interior architectural coatings. The measurement results are list in table 1 and table 2 separately.

Example 4 (Exq4)

(26) In this example, the components are:

(27) TABLE-US-00016 lithium silicate 108 g; sodium fluorosilicate 12 g; EVA re-dispersible emulsion powder 63 g; iron oxide red 51 g; bentonite 430 g; defoaming agent 1 g; thickening agent 2 g.

(28) The above-mentioned components are dry mixed to obtain the inorganic dry-powdered architectural paint. The obtained paint is added into water and stirred. Then the mixture is operated for spray coating or brush coating. The property of the coating is measured according to the China Construction Industry Standard JG/T 26-2002, Inorganic Building Coating for External Wall, and the amount of VOC is measured according to China standard GB 18582-2008, Indoor Decorating and Refurbishing MaterialsLimit of Harmful substances of interior architectural coatings. The measurement results are list in table 1 and table 2 separately.

Example 5 (Exq5)

(29) In this example, the components are:

(30) TABLE-US-00017 sodium silicate 135 g; magnesium fluorosilicate 27 g; EVA re-dispersible emulsion powder 86 g; ZnO 43 g; wollastonite 453 g; defoaming agent 2 g; thickening agent 2 g.

(31) The above-mentioned components are dry mixed to obtain the inorganic dry-powdered architectural paint. The obtained paint is added into water and stirred. Then the mixture is operated for spray coating or brush coating. The property of the coating is measured according to the China Construction Industry Standard JG/T 26-2002, Inorganic Building Coating for External Wall, and the amount of VOC is measured according to China standard GB 18582-2008, Indoor Decorating and Refurbishing MaterialsLimit of Harmful substances of interior architectural coatings. The measurement results are list in table 1 and table 2 separately.

Example 6 (Exq6)

(32) In this example, the components are:

(33) TABLE-US-00018 potassium silicate 161 g; condensed aluminum phosphate 40 g; EVA re-dispersible emulsion powder 103 g; TiO.sub.2 85 g; CaCO.sub.3 515 g; defoaming agent 2 g; thickening agent 2 g.

(34) The above-mentioned components are dry mixed to obtain the inorganic dry-powdered architectural paint. The obtained paint is added into water and stirred. Then the mixture is operated for spray coating or brush coating. The property of the coating is measured according to the China Construction Industry Standard JG/T 26-2002, Inorganic Building Coating for External Wall, and the amount of VOC is measured according to China standard GB 18582-2008, Indoor Decorating and Refurbishing MaterialsLimit of Harmful substances of interior architectural coatings. The measurement results are list in table 1 and table 2 separately.

Example 7 (Exq7)

(35) In this example, the components are:

(36) TABLE-US-00019 potassium silicate 183 g; potassium fluorosilicate 37 g; EVA re-dispersible emulsion powder 122 g; TiO.sub.2 114 g; CaCO.sub.3 511 g; defoaming agent 2 g; thickening agent 2 g.

(37) The above-mentioned components are dry mixed to obtain the inorganic dry-powdered architectural paint. The obtained paint is added into water and stirred. Then the mixture is operated for spray coating or brush coating. The property of the coating is measured according to the China Construction Industry Standard JG/T 26-2002, Inorganic Building Coating for External Wall, and the amount of VOC is measured according to China standard GB 18582-2008, Indoor Decorating and Refurbishing MaterialsLimit of Harmful substances of interior architectural coatings. The measurement results are list in table 1 and table 2 separately.

Example 8 (Exq8)

(38) In this example, the components are:

(39) TABLE-US-00020 potassium silicate 205 g; aluminum phosphate 23 g; EVA re-dispersible emulsion powder 92 g; TiO.sub.2 94 g; CaCO.sub.3 500 g; defoaming agent 2 g; thickening agent 2 g.

(40) The above-mentioned components are dry mixed to obtain the inorganic dry-powdered architectural paint. The obtained paint is added into water and stirred. Then the mixture is operated for spray coating or brush coating. The property of the coating is measured according to the China Construction Industry Standard JG/T 26-2002, Inorganic Building Coating for External Wall, and the amount of VOC is measured according to China standard GB 18582-2008, Indoor Decorating and Refurbishing MaterialsLimit of Harmful substances of interior architectural coatings. The measurement results are list in table 1 and table 2 separately.

Example 9 (Exq9)

(41) In this example, the components are:

(42) TABLE-US-00021 potassium silicate 233 g; aluminum phosphate 47 g; EVA re-dispersible emulsion powder 136 g; TiO.sub.2 141 g; CaCO.sub.3 539 g; defoaming agent 2 g; thickening agent 1 g.

(43) The above-mentioned components are dry mixed to obtain the inorganic dry-powdered architectural paint. The obtained paint is added into water and stirred. Then the mixture is operated for spray coating or brush coating. The property of the coating is measured according to the China Construction Industry Standard JG/T 26-2002, Inorganic Building Coating for External Wall, and the amount of VOC is measured according to China standard GB 18582-2008, Indoor Decorating and Refurbishing MaterialsLimit of Harmful substances of interior architectural coatings. The measurement results are list in table 1 and table 2 separately.

Example 10 (Exq10)

(44) In this example, the components are:

(45) TABLE-US-00022 potassium silicate 242 g; aluminum phosphate 41 g; EVA re-dispersible emulsion powder 147 g; TiO.sub.2 101 g; CaCO.sub.3 501 g; defoaming agent 1 g; thickening agent 2 g.

(46) The above-mentioned components are dry mixed to obtain the inorganic dry-powdered architectural paint. The obtained paint is added into water and stirred. Then the mixture is operated for spray coating or brush coating. The property of the coating is measured according to the China Construction Industry Standard JG/T 26-2002, Inorganic Building Coating for External Wall, and the amount of VOC is measured according to China standard GB 18582-2008, Indoor Decorating and Refurbishing MaterialsLimit of Harmful substances of interior architectural coatings. The measurement results are list in table 1 and table 2 separately.

Example 11 (Exq11)

(47) In this example, the components are:

(48) TABLE-US-00023 potassium silicate 285 g; sodium fluorosilicate 51 g; poly(acrylate ester) re-dispersible emulsion powder 197 g; iron oxide black 200 g; talcum powder 560 g; defoaming agent 1 g; thickening agent 2 g.

(49) The above-mentioned components are dry mixed to obtain the inorganic dry-powdered architectural paint. The obtained paint is added into water and stirred. Then the mixture is operated for spray coating or brush coating. The property of the coating is measured according to the China Construction Industry Standard JG/T 26-2002, Inorganic Building Coating for External Wall, and the amount of VOC is measured according to China standard GB 18582-2008, Indoor Decorating and Refurbishing MaterialsLimit of Harmful substances of interior architectural coatings. The measurement results are list in table 1 and table 2 separately.

Example 12 (Exq12)

(50) In this example, the components are:

(51) TABLE-US-00024 potassium silicate 314 g; magnesium fluorosilicate 66 g; PMMA re-dispersible emulsion powder 173 g; lithopone powder 232 g; calcite 594 g; defoaming agent 1 g; thickening agent 2 g.

(52) The above-mentioned components are dry mixed to obtain the inorganic dry-powdered architectural paint. The obtained paint is added into water and stirred. Then the mixture is operated for spray coating or brush coating. The property of the coating is measured according to the China Construction Industry Standard JG/T 26-2002, Inorganic Building Coating for External Wall, and the amount of VOC is measured according to China standard GB 18582-2008, Indoor Decorating and Refurbishing MaterialsLimit of Harmful substances of interior architectural coatings. The measurement results are list in table 1 and table 2 separately.

Example 13 (Exq13)

(53) In this example, the components are:

(54) TABLE-US-00025 lithium silicate 350 g; magnesium phosphate 80 g; vinyl acetate/ethylene copolymer re-dispersible emulsion 200 g; powder 2,9-dimethylquinacridinone 250 g; boron nitride 600 g; defoaming agent 15 g; thickening agent 15 g.

(55) The above-mentioned components are dry mixed to obtain the inorganic dry-powdered architectural paint. The obtained paint is added into water and stirred. Then the mixture is operated for spray coating or brush coating. The property of the coating is measured according to the China Construction Industry Standard JG/T 26-2002, Inorganic Building Coating for External Wall, and the amount of VOC is measured according to China standard GB 18582-2008, Indoor Decorating and Refurbishing MaterialsLimit of Harmful substances of interior architectural coatings. The measurement results are list in table 1 and table 2 separately.

Example 14 (Exq14)

(56) In this example, the components are:

(57) TABLE-US-00026 sodium silicate 100 g; potassium fluorosilicate 3 g; styrene/butadiene copolymer re-dispersible emulsion powder 30 g; silicon carbide 350 g; defoaming agent 10 g; thickening agent 10 g.

(58) The above-mentioned components are dry mixed to obtain the inorganic dry-powdered architectural paint. The obtained paint is added into water and stirred. Then the mixture is operated for spray coating or brush coating. The property of the coating is measured according to the China Construction Industry Standard JG/T 26-2002, Inorganic Building Coating for External Wall, and the amount of VOC is measured according to China standard GB 18582-2008, Indoor Decorating and Refurbishing MaterialsLimit of Harmful substances of interior architectural coatings. The measurement results are list in table 1 and table 2 separately.

Example 15 (Exq15)

(59) In this example, the components are:

(60) TABLE-US-00027 lithium silicate 50 g; Al.sub.2O.sub.3 1 g; poly(methacrylic acid) re-dispersible emulsion powder 20 g; mica powder 300 g; defoaming agent 10 g; thickening agent 10 g.

(61) The above-mentioned components are dry mixed to obtain the inorganic dry-powdered architectural paint. The obtained paint is added into water and stirred. Then the mixture is operated for spray coating or brush coating. The property of the coating is measured according to the China Construction Industry Standard JG/T 26-2002, Inorganic Building Coating for External Wall, and the amount of VOC is measured according to China standard GB 18582-2008, Indoor Decorating and Refurbishing MaterialsLimit of Harmful substances of interior architectural coatings. The measurement results are list in table 1 and table 2 separately.

Example 16 (Exq16)

(62) In this example, the components are:

(63) TABLE-US-00028 lithium silicate 80 g; MgO 3 g; poly(acrylic acid) re-dispersible emulsion powder 20 g; pigment red 114 300 g; Barium sulfate 320 g; defoaming agent 15 g; thickening agent 15 g.

(64) The above-mentioned components are dry mixed to obtain the inorganic dry-powdered architectural paint. The obtained paint is added into water and stirred. Then the mixture is operated for spray coating or brush coating. The property of the coating is measured according to the China Construction Industry Standard JG/T 26-2002, Inorganic Building Coating for External Wall, and the amount of VOC is measured according to China standard GB 18582-2008, Indoor Decorating and Refurbishing MaterialsLimit of Harmful substances of interior architectural coatings. The measurement results are list in table 1 and table 2 separately.

Example 17 (Exq17)

(65) In this example, the components are:

(66) TABLE-US-00029 lithium silicate 400 g; sodium boronate 100 g; ethylene/vinyl chloride/vinyl laurate ester copolymer 250 g; re-dispersible emulsion powder phthalocyanine blue 300 g; CaCO.sub.3 700 g; defoaming agent 15 g; thickening agent 15 g.

(67) The above-mentioned components are dry mixed to obtain the inorganic dry-powdered architectural paint. The obtained paint is added into water and stirred. Then the mixture is operated for spray coating or brush coating. The property of the coating is measured according to the China Construction Industry Standard JG/T 26-2002, Inorganic Building Coating for External Wall, and the amount of VOC is measured according to China standard GB 18582-2008, Indoor Decorating and Refurbishing MaterialsLimit of Harmful substances of interior architectural coatings. The measurement results are list in table 1 and table 2 separately.

(68) TABLE-US-00030 TABLE 1 physical properties of the paint obtained in Exq1-17 and the coatings from the same Item technical requirement result conclusion State in After stirring, no block conformance to Qualified container appears, and shows the requirement homogeneous stat Workability Brush two accessibility conformance to Qualified the requirement Apperance of The appearance of the conformance to Qualified coating film is normal the requirement hot storage No blocking, conformance to Qualified stability (30 coacervation and the requirement days) mildwing phenomenon Low temperature No blocking and conformance to Qualified storage stability coacervation the requirement (3 times) phenomenon Drying time 2 conformance to Qualified (surface drying), the requirement hour Cleaning 100 >10000 Qualified resistanc, time Water No blister, crack and No change Qualified resistance (168 h) peeling; powder slightly peeling off is allowed Alkali No blister, crack and No change Qualified resistance (168 h) peeling; powder slightly peeling off is allowed Temperature No blister, crack and No change Qualified alter resistance peeling; powder slightly (10 times) peeling off is allowed Dirt 20 10 Qualified resistance, % No blister, crack, 500 resistance to peeling, and powdering artificial weathering, hour

(69) TABLE-US-00031 TABLE 2 measurement results of harmful substance from the paint obtained in Exq1-17 and the coatings from the same technical Item requirement result conclusion VOC, g/L 120 Not detected Qualified free-formaldehyde, mg/L 100 Not detected Qualified Heavy Soluble Lead 90 Not detected Qualified metal (Pb), mg/kg Soluble Cadmium 75 Not detected Qualified (Cd), mg/kg Soluble 60 Not detected Qualified Chromium (Cr), mg/kg Soluble mercury 60 Not detected Qualified (Hg), mg/kg Total of benzene, toluene, 300 Not detected Qualified ethylbenzene and xylene, mg/kg

(70) From table 1, it can be seen that the cleaning resistance measurement of the inorganic dry-powdered architectural paint of the present invention is more than 10000 times, far beyond the regulation, 1000 times, of standard JG/T 26-2002. Through tests of water resistance (168 h), alkali resistance (168 h) and temperature alter resistance (10 times), it can be seen that the storage stability, dirt resistance and workability can meet the standard JG/T 26-2002.

(71) Meanwhile, during the measurements and practical application, no salt separating out and whitening occurs from the inorganic dry-powdered architectural paint of the present invention.

(72) From table 2, it can be seen that, during applications, no harmful substance, such as VOC, heavy metal, benzene and formaldehyde, is generated from the inorganic dry-powdered architectural paint of the present invention, so that the paint of the present invention is environment friendly.

(73) It should be understood that the description of the embodiments above is only the illustrations of the present invention, and it does not limit the present invention to the specific embodiments illustrated. Numerous other ways of carrying out the method provided by the present invention may be devised by the skilled in the art without departing from the scope of the invention, and they are thus encompassed by the present invention. Therefore, it should be understood that any identical shift or modification can be done without departing from the spirit and the scope of the present invention.