Title:
POLYURETHANE UREA RESIN, COATING MATERIAL, AND PRINTING INK
Document Type and Number:
WIPO Patent Application WO/2021/220917
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide: a polyurethane urea resin which makes it possible to achieve a high concentration of a binder resin in a coating material and a printing ink without lowering coating film properties such as coating film strength and adhesiveness to base materials such as various plastics, steel sheets, and the like; and a coating material and a printing ink which contain the polyurethane urea resin. The present invention is a polyurethane urea resin (U) that has, as the essential structural units thereof, a vinyl polymer (A) that has two hydroxyl groups, a polyol (B) other than (A) that has a number average molecular weight of not less than 500, a polyamine (C) that has a number average molecular weight or chemical formula weight of less than 500, and a polyisocyanate (D), wherein: the vinyl polymer (A) is a reaction product of a chain transfer agent having two hydroxyl groups and one mercapto group and a vinyl monomer component containing an alkyl (meth)acrylate (a1) that has a chain alkyl group which has 4-18 carbon atoms; among the structural units, the weight ratio {(A)/(B)} of the vinyl polymer (A) to the polyol (B) is 1/99 to 80/20; and the proportion by weight of units derived from the alkyl (meth)acrylate (a1) contained in the vinyl polymer (A) is not less than 30 wt% with respect to the combined weight of all vinyl monomer-derived units contained in the vinyl polymer (A).
Inventors:
FUJIOKA MASATAKA (JP)
TODE YOSHIKI (JP)
TODE YOSHIKI (JP)
Application Number:
PCT/JP2021/016212
Publication Date:
November 04, 2021
Filing Date:
April 21, 2021
Export Citation:
Assignee:
SANYO CHEMICAL IND LTD (JP)
International Classes:
C09D175/00; C08G18/62; C08G18/65; C09D11/102
Foreign References:
| JPH05194702A | 1993-08-03 | |||
| JP2014084422A | 2014-05-12 | |||
| JP2017178976A | 2017-10-05 | |||
| JP2017145350A | 2017-08-24 |
Attorney, Agent or Firm:
YASUTOMI & ASSOCIATES (JP)
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