METHOD FOR PRODUCING COAGULUM

WIPO Patent Application WO/2017/221455

A1

The purpose of the present invention is to provide a method for producing a coagulum that is characterized by being obtained by coagulating an aqueous urethane resin composition using an aqueous solution of a nonmetallic coagulant agent that is heated to 40°C or higher. The present invention addresses the problem of providing a production method by which it is possible to obtain a coagulum having an excellent texture without using an organic solvent. The production method according to the present invention is able to produce a coagulum of excellent texture. In addition, said production method does not employ an organic solvent in a coagulation bath, and thus is free of risk of exposure to harmful volatile substances or diffusion thereof to the environment, and enables a waste liquid of the coagulation bath to be treated by a simplified method, and thereby is able to contribute to curbing production costs. Furthermore, this production method does not use any coagulant agent that contains metal, and thus does not induce rust or deterioration to the production apparatus used for producing the coagulum. Hence, the coagulum obtained by the production method according to the present invention can be suitably used for production of gloves, coating materials, leather-like sheets, etc.

TETSUI TOMOHIRO (JP)

PCT/JP2017/005661

December 28, 2017

February 16, 2017

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DAINIPPON INK & CHEMICALS (JP)

C08J3/16; C08G18/82; D06M15/564; D06N3/14

JPH08120181A	1996-05-14
JP2004249564A	2004-09-09
JPS55112312A	1980-08-29
JPS5234661B1	1977-09-05
JPS4743176B1	1972-10-31
JPS5360990A	1978-05-31
JP2013217006A	2013-10-24
JPS5035303A	1975-04-04

KONO Michihiro (JP)

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