Carboxyl group-containing polyurethane and heat-curable polyurethane resin composition
AssigneeShowa Denko K.K.
InventorsHiroshi Uchida, Ritsuko Azuma
Life of this patent
Estimating the term…
Abstract
A carboxyl group-containing polyurethane is capable of giving cured products excellent in adhesion with substrates, low warpage, flexibility, plating resistance, soldering heat resistance and long-term reliability. The carboxyl group-containing polyurethane includes a structure derived from a polyol compound having 1 to 10 hydroxyl groups and 18 to 72 carbon atoms per molecule. The carboxyl group-containing polyurethane is produced by reacting: (A) a polyisocyanate compound; (B) a polyol compound having 1 to 10 hydroxyl groups and 18 to 72 carbon atoms per molecule; and (C) a carboxyl group-containing dihydroxy compound (other than the compound (B)).
Claims16
A carboxyl group-containing polyurethane comprising a structure derived from a polyol compound (B), the polyol compound having 1 to 10 hydroxyl groups and 18 to 72 carbon atoms per molecule.
A carboxyl group-containing polyurethane produced by reacting:
- (A) a polyisocyanate compound;
- (B) a polyol compound having 1 to 10 hydroxyl groups and 18 to 72 carbon atoms per molecule;
- and
- (C) a carboxyl group-containing dihydroxy compound (other than the compound (B)).
Dependencies are inferred from the claim text.