Title:
AQUEOUS URETHANE RESIN COMPOSITION
Document Type and Number:
WIPO Patent Application WO/2023/223711
Kind Code:
A1
Abstract:
Provided is a material for forming primer layers on common plastic bases, the primer layers being capable of being removed by a simple method to easily remove the printed layers from the plastic bases and being not separated with a strongly alkaline substance under ordinary temperature conditions. The aqueous urethane resin composition comprises a urethane resin (A) and an aqueous medium (B), wherein the urethane resin (A) comprises a product of reaction between an aromatic polyester polyol (a1) formed from starting-material monomers including an aromatic dicarboxylic acid (a1-1) and a polyisocyanate (a2), the urethane resin (A) has a concentration of aromatic rings derived from the aromatic dicarboxylic acid (a1-1) as a starting-material monomer of 1 mmol/g or higher, the urethane resin (A) has a concentration of ester bond groups of 1 mmol/g or higher, and the urethane resin (A) has an acid value of 8-45 mgKOH/g.
Inventors:
WAKAHARA KEISUKE (JP)
YAMAMOTO SHINYA (JP)
OKINO KOUHEI (JP)
YAMAMOTO SHINYA (JP)
OKINO KOUHEI (JP)
Application Number:
PCT/JP2023/014561
Publication Date:
November 23, 2023
Filing Date:
April 10, 2023
Export Citation:
Assignee:
DAINIPPON INK & CHEMICALS (JP)
International Classes:
C08G18/42; B32B27/40; C09D5/02; C09D5/20; C09D9/00; C09D175/06
Foreign References:
| JP2017115018A | 2017-06-29 | |||
| JP2017014307A | 2017-01-19 | |||
| JP2018104535A | 2018-07-05 | |||
| JP2015218191A | 2015-12-07 | |||
| US20150284598A1 | 2015-10-08 |
Attorney, Agent or Firm:
TAKAOKA Ryoichi et al. (JP)
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