US 6,635,690 B2 · Reactive oligomers

Abstract

The present invention provides novel compositions prepared from a first oligomer containing reactive functional groups capable of reaction at effective rates (at normal processing temperatures) with a co-reactive second component possessing functionality that is complementary to that of the first oligomer. The compositions may be used as coatings, including hard surface coatings, clear coatings, powder coatings and pattern coatings; as adhesives, including pressure sensitive adhesives and hot melt adhesives; as sealants; as optical coatings; as blown microfibers (BMF); as high refractive index optical materials; as barrier films; in microreplication; as low adhesion backsizes, (LABs) and as release coatings.

Claims32

Dependent claims

A step-growth curable oligomer composition comprising

a) a first component oligomer, having a carbon—carbon backbone and a degree of polymerization of <300, comprising a plurality of polymerized monomer units comprising pendant reactive nucleophilic or electrophilic functional groups;
b) a second polyfunctional component co-reactive with said first component oligomer comprising
a dendritic polymer comprising pendant functional groups co-reactive with said pendant reactive nucleophilic or electrophilic functional groups of said first component oligomer;
wherein at least one of a) and b) has a functionality of greater than 2, the composition is melt-processible at temperatures of 100° C. or less and has a residual content of less than 2 weight percent.

1 more element

Dependencies are inferred from the claim text.

Reactive oligomers

Life of this patent

Reactive oligomers

Life of this patent

Abstract

Claims32