Title:
ACRYLIC RESIN POWDER, RESIN COMPOSITION, HOT MELT ADHESIVE COMPOSITION CONTAINING ACRYLIC RESIN POWDER AND METHOD FOR PRODUCING SAME
Document Type and Number:
WIPO Patent Application WO/2019/188930
Kind Code:
A1
Abstract:
An acrylic resin powder which contains a multistage polymer (M) that contains a polymer (B) which is obtained by polymerizing a monomer mixture (b) that contains methyl methacrylate and an alkyl (meth)acrylate ester (mb) in the presence of a dispersion liquid that contains a polymer (A) which is obtained by polymerizing a monomer mixture (a) that contains an alkyl (meth)acrylate ester (ma). This acrylic resin powder is soluble in acetone and is configured such that: an alkyl group in the alkyl (meth)acrylate ester (ma) has 4-8 carbon atoms; an alkyl group in the alkyl (meth)acrylate ester (mb) has 4-8 carbon atoms; the polymer (A) has a glass transition temperature of 20°C or less; the polymer (B) that is obtained by polymerizing the monomer mixture (b) has a glass transition temperature of 55°C or more; and the mass average molecular weight of the multistage polymer (M) is from 10,000 to 300,000 (inclusive).
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Inventors:
MIYAI SHOGO (JP)
KONDO TORU (JP)
KONDO TORU (JP)
Application Number:
PCT/JP2019/012407
Publication Date:
October 03, 2019
Filing Date:
March 25, 2019
Export Citation:
Assignee:
MITSUBISHI CHEM CORP (JP)
International Classes:
C08J3/12; C08F22/10; C08G18/40; C09J133/00; C09J175/04
Domestic Patent References:
| WO2018012234A1 | 2018-01-18 | |||
| WO2018012234A1 | 2018-01-18 |
Foreign References:
| JP2002521511A | 2002-07-16 | |||
| JP2003128736A | 2003-05-08 | |||
| JP2018058236A | 2018-04-12 |
Other References:
"Polymer Data Handbook"
See also references of EP 3778719A4
See also references of EP 3778719A4
Attorney, Agent or Firm:
TAZAKI Akira et al. (JP)
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