The invention relates to a two-component coating composition comprising i) a base component comprising: (A) a diamine resin with two secondary amine groups of general formula (b2)-NH-(b1)-NH-(b2) wherein (b1) is a cycloaliphatic hydrocarbon group, preferably a cycloaliphatic hydrocarbon group with 5 to 18 carbon atoms; and (b2) is, independently, selected from the group consisting of —C.sub.nh.sub.2n-CN wherein n is an integer in the range of from 2 to 6, —CH.sub.2CH.sub.2—C(O)—O—C.sub.mH.sub.(2m−1) or —CH.sub.2CH(CH.sub.3)—C(O)—O—C.sub.mH.sub.(2m+1) wherein m is an integer in the range of from 1 to 6, and optionally halogenated alkyl radicals with 2 to 10 carbon atoms; and ii) a curing component comprising: (B) a polyisocyanate prepolymer having two free isocyanate groups and an isocyanate content in the range of from 3 wt % to 9 wt %, based on solid weight of the polyisocyanate prepolymer; and (C) optionally up to 3 wt % of a polyisocyanate with more than two free isocyanate groups, based on the total weight of polyisocyanates (B) and (C), wherein the two-component coating composition comprises less than 5 wt % of polyol resin. The invention further elates to a method for coating a substrate using such two-component coating composition, to a coated substrate obtainable by such method, and to use of such coating composition for improving erosion resistance of a substrate.

A thermosetting epoxy resin composition including, as curing agent, a dihydrazide selected from the group consisting of glutaric dihydrazide, adipic dihydrazide and pimelic dihydrazide, in combination with a specific urea accelerator, which features good storage stability and a low curing temperature. The epoxy resin composition is especially suitable for use as bodywork adhesive.

A functional resin material is manufactured by the following reagents including a polyol, a polyamine, a first cross-linking agent, a second cross-linking agent, and a nanocellulose. Each of the first cross-linking agent and the second cross-linking agent includes an isocyanate block. The nanocellulose includes a repeating unit represented by formula (1),

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Methods of printing a three-dimensional object using co-reactive components are disclosed. Thermosetting compositions for three-dimensional printing are also disclosed.

Durable polyurea copolymer coatings can be applied to surfaces that come in contact with fluids, such as biological fluids, thereby passivating the surface. Polyurea copolymer coating compositions comprise a reaction product of (a) a diamine composition that includes a polyethylene glycol diamine, and optionally, a dipiperidyl alkane; and (b) a diisocyanate. Solutions containing polyurea copolymers, coated surfaces and methods are also described.

The present disclosure provides a polymeric material including a polymerized reaction product of a polymerizable composition including components and has a solids content of 90% or greater. The components include a uretdione-containing material including a reaction product of a diisocyanate reacted with itself; a first hydroxyl-containing compound; an optional second hydroxyl-containing compound having a single OH group, wherein; and an epoxy component. The first hydroxyl-containing compound has more than one OH group and the optional second hydroxyl-containing compound is a primary alcohol or a secondary alcohol. The present disclosure also provides a two-part composition, in which the polymeric material is included in the first part and the second part includes at least one amine. Further, a method of adhering two substrates is provided, including obtaining a two-part composition; combining at least a portion of the first part with at least a portion of the second part to form a mixture; disposing at least a portion of the mixture on a first substrate; and contacting a second substrate with the mixture disposed on the first substrate. The disclosure also provides a polymeric material and a method of making a two-part composition. Advantageously, two-part compositions according to the present disclosure can be used as coatings and adhesive systems with handling and performance similar to existing two-part urethane systems, but with less sensitivity to water.

The invention relates to a composition comprising i) 10-90 wt. % of an ethylenically unsaturated component (A), ii) 10-90 wt. % of a component (B) having urethane and/or urea groups, iii) 0-4 wt. % of an organic component (C) which is different from components (A) and (B), and iv) 0-9 wt. % of other ingredients (D) wherein the wt. % are calculated on the total weight of the composition, wherein the sum of the wt. % of component (A) and the wt. % of component (B) is 91-100 wt. %, component (A) consists of compounds having 1-8 ethylenically unsaturated bonds and a molar mass of 100-1400 g/mol, component (A) contains no amino groups, component (B) contains no primary and no secondary amino groups, component (B) consists of compounds having 2-40 functional groups selected from urethane and urea groups, having 1-40 groups selected from tertiary amino groups, salts thereof, quaternary ammonium groups, and mixtures thereof, component (B) contains not more tertiary amino groups than the sum of urethane and urea groups, and component (B) has a nitrogen content in the range of 1.0 to 12.0 wt. %, component (C) consists of organic compounds having a molar mass of less than 1000 g/mol.

The invention relates to a composition comprising i) 10-90 wt. % of an ethylenically unsaturated component (A), ii) 10-90 wt. % of a component (B) having urethane and/or urea groups, iii) 0-4 wt. % of an organic component (C) which is different from components (A) and (B), and iv) 0-9 wt. % of other ingredients (D) wherein the wt. % are calculated on the total weight of the composition, wherein the sum of the wt. % of component (A) and the wt. % of component (B) is 91-100 wt. %, component (A) consists of compounds having 1-8 ethylenically unsaturated bonds and a molar mass of 100-1400 g/mol, component (A) contains no amino groups, component (B) contains no primary and no secondary amino groups, component (B) consists of compounds having 2-40 functional groups selected from urethane and urea groups, having 1-40 groups selected from tertiary amino groups, salts thereof, quaternary ammonium groups, and mixtures thereof, component (B) contains not more tertiary amino groups than the sum of urethane and urea groups, and component (B) has a nitrogen content in the range of 1.0 to 12.0 wt. %, component (C) consists of organic compounds having a molar mass of less than 1000 g/mol.

Provided herein are methods of making a reactive particulate material by free radically polymerizing a single-cure resin to produce a polymer, the resin comprising: a reactive blocked polyurethane prepolymer, a reactive blocked polyurea prepolymer, a reactive blocked polyurethane-polyurea copolymer, or a combination thereof, wherein said polymerizing is carried out by dispersive polymerization (e.g., an emulsion, suspension or dispersion polymerization process), to form said reactive particulate material. Methods of use of the reactive particulate material and material sets including the same are also provided.

Provided herein are methods of recycling additively manufactured objects, which may include making a reactive particulate material by recycling preformed articles or recovered coating material. Methods of use of the reactive particulate material and material sets including the same are also provided.