Patent ID: 9023941
Filing Date: 2015-05-05
Classification: B29C,B29K,C08G,C08K

Abstract:
1. Urethane resin particles (D) which are either of urethane resin particles (D 1 ) or urethane resin particles (D 2 ): the urethane resin particles (D wherein the urethane or urethane-urea resin (U 1 ) is a polyurethane resin obtained by reacting an active hydrogen component (A) with an isocyanate component (B), the active hydrogen component (A) containing an active hydrogen-containing compound (C) represented by general formula (3): wherein in the general formula (2) and the general formula (3), R 1 is represented by general formula (5): wherein R 5 represents a monovalent hydrocarbon group having a carbon number of 1 to 28; R 2 is a residue derived from a divalent active hydrogen-containing compound by removing two active hydrogens, and a plurality of R 2 may be the same or different from each other; Y is a residue derived from a tri- or more valent aromatic polycarboxylic acid by removing all carboxyl groups; and a and b are each an integer satisfying 1≦a≦(the number of substituents capable of being directly linked to the aromatic ring−b), 1≦b≦(the number of substituents capable of being directly linked to the aromatic ring−a), and 3≦a+b≦8, or the urethane resin particles (D wherein in the general formula (1), R 3 represents a residue derived from a monovalent or polyvalent active hydrogen-containing compound by removing one active hydrogen, or an OH group, and a plurality of R 3 may be the same or different from each other; V represents a residue derived from a tri- or more valent aromatic polycarboxylic acid by removing all carboxyl groups, and in the aromatic ring of V, a hydrogen atom is bonded to at least one ring carbon; c is an integer satisfying 2≦c≦(the number of substituents capable of being directly linked to the aromatic ring−2); W represents a residue derived from an m- or more valent active hydrogen-containing compound by removing m active hydrogens; and m is an integer of 2 to 10.