METHOD FOR PRODUCING AQUEOUS CARBODIIMIDE-CONTAINING LIQUID

Title:

METHOD FOR PRODUCING AQUEOUS CARBODIIMIDE-CONTAINING LIQUID

Document Type and Number:

WIPO Patent Application WO/2019/163345

Kind Code:

A1

Abstract:

The present invention provides a method for producing an aqueous carbodiimide which has excellent crosslinking reactivity with a crosslinkable group such as an alcoholic hydroxyl group of an aqueous resin. A method for producing an aqueous carbodiimide-containing liquid, which comprises: a step (1) wherein an isocyanate group-containing carbodiimide (A), a terminal blocking agent and one or more organic metal compounds that are selected from among organic titanium compounds, organic zirconium compounds and organic aluminum compounds are mixed and reacted with each other, thereby obtaining a terminally blocked carbodiimide (B) wherein the isocyanate group is blocked by the terminal blocking agent; and a step (2) wherein the terminally blocked carbodiimide (B) is dissolved or dispersed in an aqueous solvent, thereby obtaining an aqueous carbodiimide-containing liquid. The terminal blocking agent contains a hydrophilic compound (X) which has a functional group that is reactive with an isocyanate group and a hydrophilic group that is other than the functional group.

Inventors:

IIZUKA SHUNSUKE (JP)
YANAGISAWA KENICHI (JP)

Application Number:

PCT/JP2019/001372

Publication Date:

August 29, 2019

Filing Date:

January 18, 2019

Export Citation:

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Assignee:

NISSHINBO CHEMICAL INC (JP)

International Classes:

C08G18/79; C08G18/28; C08G18/80

Foreign References:

JPH10182990A	1998-07-07
JP2018009192A	2018-01-18
JP2000319351A	2000-11-21
JPH09221532A	1997-08-26
JPH09216931A	1997-08-19
JP2004256505A	2004-09-16
JP2009132762A	2009-06-18

Other References: