Search International and National Patent Collections

1. (WO2017038195) MOISTURE CURABLE HOT MELT URETHANE COMPOSITION, METHOD FOR PRODUCING CURED FOAM OF SAME, SYNTHETIC LEATHER AND METHOD FOR PRODUCING SYNTHETIC LEATHER

Pub. No.:    WO/2017/038195    International Application No.:    PCT/JP2016/067218
Publication Date: Fri Mar 10 00:59:59 CET 2017 International Filing Date: Fri Jun 10 01:59:59 CEST 2016
IPC: C08G 18/00
C08G 18/10
C08G 101/00
Applicants: DIC CORPORATION
DIC株式会社
Inventors: KANAGAWA Yoshinori
金川 善典
Title: MOISTURE CURABLE HOT MELT URETHANE COMPOSITION, METHOD FOR PRODUCING CURED FOAM OF SAME, SYNTHETIC LEATHER AND METHOD FOR PRODUCING SYNTHETIC LEATHER
Abstract:
The present invention provides a moisture curable hot melt urethane composition which is characterized by containing (A) a hot melt urethane prepolymer having an isocyanate group and (B) a foaming agent composition containing (b1) N, N'-dinitrosopentamethylenetetramine, (b2) urea and (b3) a polyol. The present invention also provides a method for producing a cured foam of a moisture curable hot melt composition, which is characterized in that: the hot melt urethane prepolymer (A) is heated and melt, and is subsequently mixed with the foaming agent composition (B) and applied to a base; and after that, the applied mixture is foamed and cured by being subjected to a heat treatment at a temperature that is not less than the heating/melting temperature of the hot melt urethane prepolymer (A). The present invention addresses the problem of providing a solvent-free foaming system which enables the achievement of a cured foam that has good texture and is capable of maintaining a good foam state even in the form of a thin film.