摘要:
The present invention provides a curable coating composition that includes at least three components. The coating composition includes a component (a) that includes one or both of a compound (a)(1) having at least one carbamate group or terminal urea group according to the invention and having at least two linking groups that are urethane or urea or a compound (a)(2) having at least two groups selected from carbamate groups, terminal urea groups, or combinations of the two and at least four urethane or urea linking groups. The second component (b) of the coating composition includes a polymer resin comprising active hydrogen-containing functional groups reactive with the third component (c). The resins is selected from polyester, polyurethane, or polyester-polyurethane copolymers Component (c) of the coating composition is a curing agent that is reactive with the first two components. Preparation of coated articles using the compositions of the invention is also disclosed.
摘要:
The present invention provides a curable coating composition that includes at least three components. The coating composition includes a component (a) having at least one carbamate group or urea group and having a lactone or hydroxy carboxylic acid moiety. The second component (b) of the coating composition is one or more of three materials. First, the second component can be a polymer resin (b)(1) comprising active hydrogen-containing functional groups reactive with the third component(c). Secondly, the second component can be a compound (b)(2) having at least one carbamate group or terminal urea group according to the invention and having at least two linking groups that are urethane or urea. Finally, the second component can be a compound (b)(3) having at least two groups selected from carbamate groups, terminal urea groups, or combinations of the two and at least four urethane or urea linking groups. The third component of the coating composition is a curing agent that is reactive with the first two components. Preparation of coated articles using the compositions of the invention is also disclosed.
摘要:
The present invention provides a curable coating composition that includes at least three components. The coating composition includes a component (a) that includes one or both of a compound (a)(1) having at least one carbamate group or terminal urea group according to the invention and having at least two linking groups that are urethane or urea or a compound (a)(2) having at least two groups selected from carbamate groups, terminal urea groups, or combinations of the two and at least four urethane or urea linking groups. The second component (b) of the coating composition includes an acrylic polymer comprising active hydrogen-containing functional groups reactive with the third component(c). Component (c) of the coating composition is a curing agent that is reactive with the first two components. Preparation of coated articles using the compositions of the invention is also disclosed.
摘要:
A durability enhancing agent which is an ultraviolet light absorbing compound or hindered amine light stabilizer covalently bonded to a monomeric, oligomeric or polymeric component. The durability enhancing agent includes more than one carbamate functional group, group convertible to a carbamate group, or group that is crosslinked via a carbamate group. The durability enhancing agent may also have other reactive functionality thereon. Also included is a coating composition including the durability enhancing agent.
摘要:
A durability enhancing agent which comprises an ultraviolet light absorbing compound or hindered amine light stabilizer, or mixture thereof, bonded to a non-acrylic monomeric, oligomeric, or polymeric component, said agent comprising more than one carbamate functional group, group convertible to a carbamate group, or a group that crosslinks with a carbamate functional group. Also included is a coating composition including the durability enhancing agent for improved resistance to environmental etch.
摘要:
The present invention relates to a modified crosslinkable resin and a composite coating composition or system employing the resin. More particularly, the resin comprises an ethylenically unsaturated monomer or copolymer and para-hydroxybenzoic acid or substituted para-hydroxybenzoic acid, the reaction product thereof subsequently being reacted with a crosslinking agent gives rise to a composition including an ether linkage with a carbon-carbon site ortho to the phenolic hydroxy group.
摘要:
The invention provides a process that includes a first step of reacting the hydroxyl groups of a acrylic resin having hydroxyl groups and carbamate groups with a compound that converts the hydroxyl groups to new groups unreactive with an aminoplast crosslinker; a second step of combining the acrylic resin reaction product with at least an aminoplast crosslinker to form a coating composition; and a third step of applying the coating composition to a substrate and curing the applied coating layer, in which substantially no ether linkages are formed. Aminoplast crosslinkers are desirable for other reasons such as providing high solids coatings having excellent appearance that cure under moderate conditions. Avoiding the ether linkages that could be formed by reaction of aminoplast crosslinkers with hydroxyl groups improves the resistance of the cured coating to environmental etch.
摘要:
Coatings are described derived from a curable coating composition comprising: (a) a non-polymeric organic compound having a molecular weight of from 75 to 2000 comprising a plurality of carbamate active hydrogens, and (b) a second component comprising a compound having a plurality of functional groups that are reactive with said carbamate active hydrogens.
摘要:
A compound in which n is 0, 1, 2, or 3; R1, R2, R7, and R8 are each independently alkyl group, including cycloalkyl, an alkylaryl group, or an aryl group, optionally with one or more heteroatoms, with the proviso that R1 and R2 can together form a cycloalkylene group and, independently, R7 and R8 can together form a cycloalkylene group; Y is an oxygen free radical, a sulfur free radical, OR9 or SR9; R3, R4, R5, R6, and R9 are each independently H or an alkyl group, a cycloalkyl group, an aryl group, or an alkylaryl group, optionally with one or more heteroatoms; and compositions, such as basecoat and clearcoat coating compositions, containing such compounds.
摘要翻译:n为0,1,2或3的化合物; R 1,R 2,R 7和R 8各自独立地为烷基,包括环烷基,烷基芳基或芳基,任选具有一个或多个杂原子,条件是R 1和R 2可以一起形成亚环烷基, R7和R8可以一起形成亚环烷基; Y是氧自由基,无硫自由基,OR9或SR9; R 3,R 4,R 5,R 6和R 9各自独立地为H或烷基,环烷基,芳基或烷基芳基,任选具有一个或多个杂原子; 以及含有这些化合物的组合物,如底漆和透明涂料涂料组合物。
摘要:
The present invention provides a curable coating composition that includes a film-forming polymer, a polymeric additive having at least one bound surface protecting group, and a crosslinker that is reactive with the film-forming polymer. The polymeric additive is substantially free of groups reactive with the crosslinker and has comonomer units with aryl groups, alkyl groups having, on average, four or more carbon atoms, or combinations of the aryl and alkyl groups. When the coating composition is cured to form a cured coating layer, the concentration of the polymeric additive in the upper about 50% of the cured coating layer thickness is at least about 10% higher than the concentration of the polymeric additive in the rest of the cured coating layer.