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Title:
POLYURETHANE AQUEOUS DISPERSION, ADHESIVE, SYNTHETIC LEATHER AND PAINT
Document Type and Number:
WIPO Patent Application WO/2023/210299
Kind Code:
A1
Abstract:
Provided is a polyurethane aqueous dispersion having excellent storage stability, enabling to prepare an adhesive, a coating material, 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, using the polyurethane aqueous dispersion as an additive for imparting adhesiveness. 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 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 40 mg KOH/g or less, and the polyurethane being a reactant obtained by reacting a polyisocyanate and a polyol in a ratio of 0.5 ≤ [NCO group/OH group (molar ratio) ] ≤ 0.95.

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Inventors:
MUTO KAZUAKI (JP)
INO RYOHEI (JP)
Application Number:
PCT/JP2023/014360
Publication Date:
November 02, 2023
Filing Date:
April 07, 2023
Export Citation:
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Assignee:
DAINICHISEIKA COLOR CHEM (JP)
International Classes:
C08G18/00; C08G18/08; 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:
WO2021172485A12021-09-02
Foreign References:
JP2005330339A2005-12-02
KR20090085805A2009-08-10
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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