ADHESIVE COMPOSITIONS AND METHODS

摘要

The present invention encompasses polyurethane adhesive compositions comprising aliphatic polycarbonate chains. In one aspect, the present invention encompasses polyurethane adhesives derived from aliphatic polycarbonate polyols and polyisocyanates wherein the polyol chains contain a primary repeating unit having a structure. In another aspect, the invention provides articles comprising the inventive polyurethane compositions as well as methods of making such compositions.

主权项

1. A polyurethane adhesive composition comprising segments derived from one or more aliphatic polycarbonate polyol derived from the copolymerization of carbon dioxide and one or more epoxides and having a primary repeating unit with a structure: where R1, R2, R3, and R4 are, at each occurrence in the polymer chain, independently selected from the group consisting of —H, fluorine, an optionally substituted C1-40 aliphatic group, an optionally substituted C1-20 heteroaliphatic group, and an optionally substituted aryl group, where any two or more of R1, R2, R3, and R4 may optionally be taken together with intervening atoms to form one or more optionally substituted rings optionally containing one or more heteroatoms.