Abstract:
A coating composition is disclosed that includes: (A) a multi-functional compound having (1) at least one carbamate or urea functional group, (2) at least one other functional group which may or may not be carbamate or urea, and (3) at least one hydrogen bond acceptor group that is not also a hydrogen bond donor group, with the proviso that said multi-functional compound is other than an acrylic polymer or oligomer having carbamate functional or urea groups appended to the acrylic backbone through acrylic ester side chains, a polyester polymer or oligomer that is the polycondensation reaction product of a polyol and a polyacid component, or a polyurethane that is the reaction product of a polyisocyanate component and a polyester polyol component, and (B) a curing agent comprising a plurality of groups that are reactive with the functional groups on compound (A).
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:
Water-based coating compositions comprise an aqueous solution, emulsion, or dispersion of (a) a water-soluble or water-dispersible polymer or oligomer having at least one anionic moiety which is capable of reacting with an oxazoline or oxazine moiety; (b) a water-soluble or water-dispersible polymer or oligomer having at least one oxazoline or oxazine moiety; and (c) a sol comprising a colloidal dispersion of surface-modified, inorganic microparticles in liquid; at least one of the components (a), (b), and (c) further comprising at least one fluoroaliphatic moiety. The compositions can be used to form hard coatings having low surface energy and high abrasion resistance.
Abstract:
A one-package type photosolder resist developable with an aqueous alkali solution and suitable for use as a solder resist for a printed circuit board is disclosed. The composition comprises (A) a copolymeric macromolecular compound containing at least one free carboxyl group in the molecular unit thereof or (A') a copolymeric macromolecular compound containing at least one free carboxyl group and at least one photoreactive unsaturated group in the molecular unit thereof and assuming a solid state at normal room temperature, (B) a diluent including a polyfunctional unsaturated compound assuming a liquid state at normal room temperature and/or an organic solvent, (C) a photopolymerization initiator, (D) a vinyltriazine compound or a derivative thereof, and (E) an inorganic filler. A process for forming a solder resist on a printed circuit board having a circuit preparatorily formed thereon comprises the steps of applying to the surface of said printed circuit board the one-package type photosolder resist composition mentioned above, drying the applied layer of said composition, selectively exposing the dried layer to actinic radiation according to a prescribed pattern, developing the unexposed area of said layer with an aqueous alkali solution thereby forming a solder resist pattern, and finally curing said resist pattern by exposure to actinic radiation.
Abstract:
Polyurethane polymers having pendant carbamate groups are disclosed. The polymers are prepared by: (a) reacting a mixture comprising a polyol having at least one pendant carbamate group and a polyisocyanate to form a polyurethane having pendant carbamate groups, and (b) optionally, capping the polyurethane from (b) with an active hydrogen-containing capping agent.
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:
Aqueous polymer compositions which contain a polymer having ureido groups and a polyaldehyde compound are suitable for the production of coatings having high adhesion to substrate and having high cohesion.
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:
Autocrosslinking aqueous dispersions characterized by an MFT of from 0.degree. to about 50.degree. C. include at least one carbonyl-containing soft latex polymer having an MFT of below about 20.degree. C., at least one hard latex polymer having an MFT of above about 25.degree. C., and at least one polyfunctional carboxylic hydrazide. The aqueous polymer dispersions are used as binders for non-blocking, scratch-resistant and chemical-resistant coatings and as binders for clear coat and pigmented coating systems.
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.