Additive for coating compositions
AssigneeE. I. Du Pont de Nemours and Company
InventorGrant C. Fry
Life of this patent
Estimating the term…
Abstract
An additive for coating compositions which is a blend of (A) 20-50% by weight of a polyisocyanate of one of the following formulas: ##STR1## where R.sup.1 is (CH.sub.2).sub.6, (B) 1-15% by weight of an ester of a polyalkylene glycol alkyl alkylate, an alkyl phthalate or an alkyl aromatic phthalate (C) 1-10% by weight of a blend of ultraviolet light stabilizers and (D) 25-78% by weight of organic solvent; the additive can be added to acrylic lacquers, nitrocellulose lacquers, acrylic-alkyd enamels and acrylic polyurethane enamels to provide flexible finishes for flexible substrates used in automobile and truck bodies.
Claims10
An additive for coating compositions which comprises about
- (A) 20-50% by weight of a polyisocyanate of the formula ##STR7## where R' is (CH.sub.2).sub.6 ;
- (B) 1-15% by weight of an ester of [polyethylene glycol diethylhexoate]polyethylene glycol di(2-ethylhexoate);
- (C) 1-10% by weight of a blend of ultraviolet light stabilizers consisting essentially of 2-[2'-hydroxy-3',5'-1(1-1-dimethylpropyl)phenyl]benzotriazole and di-[4-(2,2,6,6-tetramethyl-piperidyl)]sebacate and
- (D) 25-78% by weight of organic solvent comprising ethyl acetate, toluene and diethylene glycol monobutyl ether.
Dependencies are inferred from the claim text.