Abstract:
The invention pertains to a coating composition comprising a compound comprising at least one bicyclo-orthoester group and at least one other functional group. The invention also comprises a process for curing the present coating composition. Further, a process for making a bicyclo-orthoester-functional compound from the corresponding oxetane compound is described.
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 the reaction product of a polyol having at least one branch point, i.e., carbon bonded to at least three other carbons, with a lactone or hydroxy carboxylic acid. 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:
Carboxy resins of low equivalent weight per carboxyl group are synthesized by reacting a compound having two or more isocyanate groups with a compound having one hydroxyl group and two or more carboxyl groups. In a preferred embodiment, the compound having isocyanate groups is an isocyanurate derivative of a diisocyanate. The compound having isocyanate groups and the compound having one hydroxyl group and two or more carboxyl groups are reacted under conditions where reaction of carboxyl groups with isocyanate is substantially avoided. In another aspect of the invention, coating compositions are provided that contain in addition to the carboxy resin, a second component having a number of functional groups that are reactive with the carboxyl groups on the carboxy resin.
Abstract:
The invention provides coating compositions comprising a reactive component (a) which is substantially free of any heteratoms and is a not a crystalline solid at room temperature and which comprises from (i) 12 to 72 carbon atoms, and (ii) at least two functional groups, and (b) a crosslinking agent comprising a plurality of functional groups (iii) reactive with the functional groups (ii) of compound (a), wherein functional groups (ii) and (iii) are selected such that reaction there between produces a thermally irreversible chemical linkage. The coating compositions of the invention provide improved solids, chip resistance, flexibility and/or scratch & mar resistance while maintaining desirable and/or improved performance characteristics with regard to environmental etch, relative humidity, QCT, chip resistance, thermoshock resistance, cold crack resistance, adhesion and the like.
Abstract:
The beta -hydroxy carbamate, ethylenically unsaturated monomer of the invention can be polymerized as a homopolymer or copolymerized with other monomers. The polymerization can be carried out in an aqueous medium. The beta -hydroxy carbamate monomer is polymerized to form water-soluble homopolymers or, if polymerized as a mixture with one or more comonomers, copolymers that are soluble, emulsifiable, or dispersible in water. The beta -hydroxy carbamate monomer can be used as a replacement monomer for acrylamide.