Abstract A polyurethane coating lacquer composition for substrates such as wood, metal, concrete, leather and plastics includes conventional solvents and I. the reaction product of 3-isocyanatomethyl-3,5,5-trimethylcyclohexyl-isocyanate with branched chain polyesters having terminal hydroxyl groups based on mixtures of aliphatic and aromatic dicarboxylic acids, said polyester and said isocyanate being reacted without a catalyst at 10°-35°C. in such quantities that there are two isocyanate groups per --OH group, and 15-85 mol percent of the dicarboxylic acids are aliphatic and the remainder aromatic acids; and Ii. an aldime having the formula ##SPC1## Wherein each R is the same or different alkyl having 1 to 8, preferably 1 to 4 carbon atoms.
Polyurethane coating composition comprising i. the reaction product of 3-isocyanatomethyl-3,5,5-trimethylcyclohexyl-isocyanate with branched chain polyesters having terminal hydroxyl groups based on mixtures of aliphatic and aromatic dicarboxylic acids, said polyester and said isocyanate being reacted without a catalyst at 10°-35°C. in such quantities that there are two isocyanate groups per --OH group, and 15-85 mol percent of the dicarboxylic acids are aliphatic and the remainder aromatic acids; and ii. an aldime having the formula ##SPC3## wherein each R is the same or different alkyl having 1 to 8, preferably 1 to 4 carbon atoms.
Claim 2
Dependent Claim
93 words
Polyurethane coating composition comprising i. the reaction product of 3-isocyanatomethyl-3,5,5-trimethylcyclohexyl-isocyanate with branched chain polyesters having terminal hydroxyl groups based on mixtures of aliphatic and aromatic dicarboxylic acids, said polyester and said isocyanate being reacted without a catalyst at 10°-35°C. in such quantities that there are two isocyanate groups per --OH group, and 15-85 mol percent of the dicarboxylic acids are aliphatic and the remainder aromatic acids; and ii. an aldime having the formula ##SPC3## wherein each R is the same or different alkyl having 1 to 8, preferably 1 to 4 carbon atoms.
Claim 3
Dependent Claim
10 words
Polyurethane composition of claim 1 wherein said polyester contains tin.
Claim 4
Dependent Claim
10 words
Polyurethane composition of claim 1 wherein the aldime N,N'diisobutylidene-1-amino-3-aminomethyl-3, 5,5-trimethylcyclohexane.
Claim 5
Dependent Claim
33 words
Polyurethane composition of claim 1 wherein isocyanate reaction product and aldimes are used in such quantities such that --NCO and aldime equivalents are present in the ratio of 2 : 1.5 - 1.