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1. (WO2013146986) AQUEOUS POLYURETHANE RESIN DISPERSION

Pub. No.:    WO/2013/146986    International Application No.:    PCT/JP2013/059190
Publication Date: Fri Oct 04 01:59:59 CEST 2013 International Filing Date: Fri Mar 29 00:59:59 CET 2013
IPC: C08G 18/12
C08K 5/17
C08K 5/24
C08K 5/33
C08L 75/04
C09D 5/02
C09D 175/04
Applicants: UBE INDUSTRIES, LTD.
宇部興産株式会社
Inventors: MORIKAMI, Atsushi
森上 敦史
NAIKI, Masahiro
内貴 昌弘
ADACHI, Fumio
足立 文夫
TAKAHASHI, Manabu
高橋 学
MIYOSHI, Kenta
三吉 健太
Title: AQUEOUS POLYURETHANE RESIN DISPERSION
Abstract:
The present invention provides an aqueous polyurethane resin dispersion, wherein a polyurethane resin that is obtained by reacting (A) a polyurethane prepolymer, which is obtained by reacting (a) a polyisocyanate compound, (b) a polyol compound, (c) an acidic group-containing polyol compound and (d) a blocking agent for isocyanate groups, with (B) a chain extender is dispersed in an aqueous medium. This aqueous polyurethane resin dispersion is characterized in that: the total of the urethane bond content and the urea bond content is 8-13% by weight based on the solid content; the carbonate bond content is 15-40% by weight based on the solid content; the content of isocyanate groups bonded by the blocking agent is 0.3-2.0% by weight; and an alkanedioic acid dihydrazide is contained as the chain extender.