Title:
POLYURETHANE RESIN AQUEOUS DISPERSION
Document Type and Number:
WIPO Patent Application WO/2021/172485
Kind Code:
A1
Abstract:
The present invention addresses the problem of providing a polyurethane resin aqueous dispersion that has excellent storage stability and washability when being used in a paint gun and that can provide a coating having excellent post-painting appearance, water-resistant adhesiveness, and hot water-resistant adhesiveness. A polyurethane resin aqueous dispersion (Q) according to the present invention contains: an aqueous medium; and a polyurethane resin (U) having an acidic group and including, as an essential structural monomer, an active hydrogen component (A) and an organic polyisocyanate component (B), and/or a polyurethane resin (U1) obtained by neutralizing the acidic group included in the polyurethane resin (U). The polyurethane resin (U) has a hydroxyl group. The acid value of the polyurethane resin (U) is 5-18 mgKOH/g. The viscosity of the polyurethane resin (U) at 25°C as measured using a rheometer at a shear rate of 0.1/s is 100-1,000,000 Pa·s.
Inventors:
MAKINO HIROKI (JP)
YAMANE MASUMI (JP)
WATANABE MASAHIRO (JP)
YAMANE MASUMI (JP)
WATANABE MASAHIRO (JP)
Application Number:
PCT/JP2021/007240
Publication Date:
September 02, 2021
Filing Date:
February 26, 2021
Export Citation:
Assignee:
SANYO CHEMICAL IND LTD (JP)
International Classes:
C08K5/1515; C08G18/00; C08G18/08; C08G18/48; C08G18/73; C08G18/75; C08G18/80; C08G18/83; C08K5/16; C08L75/04
Foreign References:
| JP2013193058A | 2013-09-30 | |||
| JP2014210225A | 2014-11-13 | |||
| JP2013060577A | 2013-04-04 |
Attorney, Agent or Firm:
YASUTOMI & ASSOCIATES (JP)
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