Abstract:
Curable coating compositions are described comprising(a) a polymer resin comprising carbamate functional groups,(b) a curing agent having groups that are reactive with said functional groups on (a), and(c) a compound having a molecular weight of from 75 to 2000 comprising at least one group of the formula: ##STR1## wherein X is O or NH, R is H or alkyl of 1 to 4 carbon atoms, and either (a), (b), or both (a) and (b) comprise groups that are reactive with said group on (c).
Abstract:
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.
Abstract:
A composition comprising a resin having latent primary amine functionality is described. The latent amine functionality is obtained by reacting a cyclic anhydride with an amine compound having two primary amine groups and one secondary amine group. The latent amine resin is combined with a curing agent having a plurality of cyclic carbonate groups in a crosslinkable coating composition.
Abstract:
A cationic resin having latent primary amine functionality is described. The latent amine functionality is obtained by reacting a cyclic anhydride with an amine compound having two primary amine groups and one secondary amine group. The cationic resin is combined with a curing agent having a plurality of cyclic carbonate groups in an electrocoat bath.
Abstract:
Gift free coating with improved tannin stain blocking, nicotine stain blocking, efflorescencee resistance, and water spot resistance are disclosed. Pre-treated ion exchange resins are incorporated into the coating compositions to achieve the improvements.
Abstract:
A curable coating composition is described comprising (A) a compound comprising carbamate or urea and hydroxyl functional groups that is the reaction product of (1) a compound comprising a carbamate or urea group or a group that can be converted to a carbamate or urea group, and an active hydrogen group that is reactive with a lactone or a hydroxy carboxylic acid, and (2) a lactone or a hydroxy carboxylic acid, (B) a compound comprising at least one group that is reactive with carbamate and at least one group that is reactive with hydroxyl, or a plurality of groups that are reactive with both carbamate and hydroxyl.
Abstract:
Waterborne coating compositions, methods of preparing the same and uses thereof are disclosed. The present waterborne coating compositions include an active hydrogen-containing surface active resin and a 1,3,5-triazine carbamate crosslinker dispersed in an aqueous medium, and are preferably formulated to be applied by spraying for use in automotive OEM applications.
Abstract:
Waterborne coating compositions, methods of preparing the same and uses thereof are disclosed. The present waterborne coating compositions include an active hydrogen-containing surface active resin and a 1,3,5-triazine carbamate crosslinker dispersed in an aqueous medium, and are preferably formulated to be applied by spraying for use in automotive OEM applications.
Abstract:
It is an objective of the present invention to provide, in particular, a curable composition of an extremely high utility which yields a cured film having excellent acid resistance and the like. The curable composition of the present invention is used mainly for paints, adhesives, or sealing agents. The curable composition is based on crosslinking reaction between a specific substituted methyl ester group exemplified by an alkoxymethyl ester group and other functional groups, i.e., an epoxy group and an active hydrogen-containing group such as a hydroxyl group, a carbamate group, and an acetoacetoxy group. Thus, the present invention provides basically two types of compositions: one is the composition containing a self-crosslinkable polymer possessing both a substituted methyl ester group and an active hydrogen-containing group and/or an epoxy group, the other is the composition containing a compound possessing a substituted methyl ester group and a compound containing an active hydrogen-containing group and/or an epoxy group.
Abstract:
A dried film reinforced with coalescable water insoluble polymer particles which are substantially noncoalesced is disclosed. Also disclosed are dried films reinforced with noncoalesced water insoluble polymer particles which are readily water dispersible. Also disclosed are stable aqueous dispersions for formation of such films which comprise (a) a water insoluble component comprising coalescable polymer particles which have a T.sub.g less than 55.degree. C. and a majority of which have a particle size of less than 1 micron; and (b) a water soluble component which comprises a water soluble polymer capable of inhibiting coalescence of the polymer particles, or a water soluble polymer and a component capable of inhibiting coalescence of the polymer particles.