Mar-resisting polyurethane coatings

Details Mar-resisting polyurethane coatings Mar-resisting polyurethane coatings

C - Chemistry, Metallurgy

08

K

117/191, 400/545

C08K 5/00 (2006.01) C08L 61/28 (2006.01) C08L 75/04 (2006.01) C09D 175/04 (2006.01)

Patent

CA 1057884

ABSTRACT OF THE DISCLOSURE Compositions of matter consisting of (A) urethane prepolymers having terminal hydroxy groups produced from (1) a polyol of 200 - 3,000 molecular weight, (2) an organic polyisocyanate and (3) a polyhydric alcohol which are admixed with (B) a polyalkylether of a polymethylol melamino and (C) an acid catalyst are rendered more adherent to polymeric substrates by incorporating therein various ultraviolet light absorbers such as 2-[(2-hydroxy-5-t-octyl- phenyl)]benzotriazole, 2,2'-dihydroxy-4-methoxy-benzophenone and the like and improved articles of manufacture comprising polymeric substrates comprising polymeric substrates coated with said compositions result.

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