Title:
POLYURETHANE AQUEOUS DISPERSION, ADHESIVE, SYNTHETIC LEATHER AND PAINT
Document Type and Number:
WIPO Patent Application WO/2023/210300
Kind Code:
A1
Abstract:
Provided is a polyurethane aqueous dispersion having excellent storage stability, enabling to prepare an adhesive, a paint or the like, which can form an adhesive layer that is a cured film in which physical properties such as strength do not readily change due to temperature changes. The polyurethane aqueous dispersion contains water that is a dispersion and resin particles formed with a polyurethane having a hydroxyl group at the terminal thereof, wherein the polyurethane has a structural unit derived from a urethane prepolymer, the urethane prepolymer has a structural unit derived from a polyol containing a polyether polyol, a structural unit derived from a polyisocyanate containing an aliphatic polyisocyanate and an alicyclic polyisocyanate, and a structural unit derived from an acidic group-containing polyol, the acid value of the polyurethane being 30 mg KOH/g or less, the polyol further containing a polycarbonate polyol, and the mass ratio of the polyether polyol (C) and the polycarbonate polyol (D) being (C) : (D) = 20: 80 to 95: 5.
Inventors:
MUTO KAZUAKI (JP)
INO RYOHEI (JP)
INO RYOHEI (JP)
Application Number:
PCT/JP2023/014361
Publication Date:
November 02, 2023
Filing Date:
April 07, 2023
Export Citation:
Assignee:
DAINICHISEIKA COLOR CHEM (JP)
International Classes:
C08G18/00; C08G18/08; C08G18/32; C08G18/40; C08G18/44; C08G18/48; C08G18/72; C08G18/73; C08G18/75; C09D169/00; C09D171/00; C09D175/06; C09D175/08; C09J175/06; C09J175/08; D06N3/14
Domestic Patent References:
| WO2021172485A1 | 2021-09-02 |
Foreign References:
| JP2005330339A | 2005-12-02 | |||
| KR20090085805A | 2009-08-10 | |||
| CN103382253A | 2013-11-06 |
Other References:
LEE, S.K. ; KIM, B.K.: "High solid and high stability waterborne polyurethanes via ionic groups in soft segments and chain termini", JOURNAL OF COLLOID AND INTERFACE SCIENCE, ACADEMIC PRESS,INC., US, vol. 336, no. 1, 1 August 2009 (2009-08-01), US , pages 208 - 214, XP026145090, ISSN: 0021-9797, DOI: 10.1016/j.jcis.2009.03.028
Attorney, Agent or Firm:
KONDO Rieko et al. (JP)
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