One-can thermosetting resin compositions

Details One-can thermosetting resin compositions One-can thermosetting resin compositions

1987-04-08

1988-02-16

Welsh, Maurice J.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

From reactant having at least one -n=c=x group as well as...

4273881, 4273882, 4284258, C08G 1880

Patent

active

047256613

ABSTRACT:
A one-can thermosetting resin composition comprising (a) a polyester polyol which is obtainable by allowing dicarboxylic acid to react with glycol and polyol having at least three OH groups, either one of the dicarboxylic acid and the glycol being an aliphatic one and the other being a cyclic one, whose hydroxyl value is 20-300, and (b) a blocked a,a,a',a'-tetramethyl-xylene diisocyanate or/and 4,4'-methylene bis(cyclohexyl isocyanate) or a blocked NCO-terminated prepolymer which is obtained by allowing .alpha.,.alpha.,.alpha.',.alpha.'-tetramethyl-xylene diisocyanate or/and 4,4'-methylenebis(cyclohexyl isocyanate) to react with an active hydrogen compound, give excellent coating films in yellowing and thermal degradation, and also in increased hardness as well as a high flexibility, stain resistance and chemical resistance. When the composition is used for preparing precoated metals, it gives good steel plates, thus being advantageously utilized for, among others, light electrical appliances.

REFERENCES:
patent: 4562714 (1986-01-01), Tanaka et al.

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