Polyurethane-based adhesive coating or film, and use of same in laminated glass panes
AssigneeSaint-Gobain Vitrage
InventorsKurt C. Frisch, Daniel Klempner, Helmer Radisch, Gerhard Holzer
Life of this patent
Estimating the term…
Abstract
A transparent adhesive coating or film based on polyurethane. The coating or film comprises a polurethane formed from at least one aliphatic or cycloaliphatic diisocyanate, at least one polyol chosen from among the polyether diols, the polycaprolactone diols, the polycarbonate diols, and the polybutadiene diols, and at least one chain-lengthening agent which is a product of the reduction of dimeric acid to a diol. The adhesive coating or film is employed in laminated panes of glass and/or plastic material.
Claims12
A transparent adhesive polyurethane-based layer for use in laminated panes, wherein the polyurethane is formed from at least one aliphatic or cycloaliphatic diisocyanate, at least one polyol selected from the group consisting of the polyether diols, the polycaprolactone diols, the polycarbonate diols, and the polybutadiene diols, and at least one chain-lengthening agent which is a product of the reduction of dimeric acid to diol form, said dimeric acid having 36 C atoms and produced by Diels-Alder-type dimerization of unsaturated fatty acids having 18 C atoms, said acid being further characterized by having two or more lateral alkyl branches and at least one olefinic double bond.
Dependencies are inferred from the claim text.