Uv-absorbing polyurethanes and polyesters

Details Uv-absorbing polyurethanes and polyesters Uv-absorbing polyurethanes and polyesters

C - Chemistry, Metallurgy

07

D

C07D 249/20 (2006.01) C07C 225/16 (2006.01) C08G 18/00 (2006.01) C08G 18/32 (2006.01) C08G 18/38 (2006.01) C08G 63/00 (2006.01) C08G 63/685 (2006.01) C09D 167/00 (2006.01) C09D 175/04 (2006.01)

Patent

CA 2125020

UV-absorbing polyurethanes and polyesters Abstract of the Disclosure Polyurethanes and polyesters are described which are the reaction products of an aromatic, aliphatic or cycloaliphatic diisocyanate, or of a diacid or diacid derivative respectively, with a diol containing a pendent UV-absorbing moiety, optionally also with one or more other diols or diamines. These UV-absorbing polycondensates can be applied to the surfaces of substrates by exhaustion methods or by spraying and act to protect polymers and dyes from degradation by UV radiation. They are therefore useful, either alone or in combination with other coating materials, for the treatment of wood, paper, textiles, leather or other surfaces which are exposed to degrading radiation.

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