Patent ID: 9499655
Filing Date: 2016-11-22
CPC Classification: C08G,C08L,C09J,D06M

Claim Text:
1. A polyurethane resin (U) for moisture-permeable waterproof materials, obtained by reacting an active hydrogen component (A1) with an organic polyisocyanate component (B), wherein the active hydrogen component (A1) comprises an oxyethylene group-containing high molecular weight diol (a1), and a compound (S1) containing at least one active hydrogen atom of the following formula (1): wherein X 1 represents a residue produced by removing c piece(s) of active hydrogen atom(s) from an active hydrogen-containing compound having a valence of m selected from the group consisting of C 2 -C 20 polyhydric alcohols, polyether polyols obtained by adding alkylene oxide to C 2 -C 20 polyhydric alcohols, C 2 -C 20 aliphatic polyamines, and polyvalent thiol compounds, the c represents an integer satisfying the inequality: 1≦c≦m, and the m represents an integer of 2 to 20; X X Y represents a residue produced by removing all of carboxyl groups from an aromatic polycarboxylic acid having a valence of 3 or more, wherein an aromatic ring in Y consists of carbon atoms, the carbon atoms are each optionally bound to a halogen atom and/or a substituent other than a carboxyl group, and at least one of the carbon atoms has no substituent; a represents an integer of not smaller than 1; b represents an integer of not smaller than 0; and a and b satisfy the inequality: 2≦a+b≦d−2, wherein d represents the number of hydrogen atoms bound to the carbon atoms forming the aromatic ring of the aromatic polycarboxylic acid when all of substituents including a carboxyl group in the aromatic polycarboxylic acid are substituted by hydrogen atoms.