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Title:
AQUEOUS DISPERSION OF VINYL HALIDE COPOLYMER AND FILM
Document Type and Number:
WIPO Patent Application WO/2021/193067
Kind Code:
A1
Abstract:
The purpose of the present invention is to provide an aqueous dispersion of a vinyl halide copolymer, said aqueous dispersion exhibiting good film formation performance after long-term storage, while enabling a film after coating to maintain high water vapor barrier properties. An aqueous dispersion of a vinyl halide copolymer according to the present invention is characterized by containing a vinyl halide copolymer which contains a structural unit derived from a vinyl halide monomer and a structural unit derived from a copolymerization monomer that has a reactivity ratio r1 of less than 0.7 relative to vinylidene chloride, wherein the mass ratio of the structural unit derived from a copolymerization monomer that has a reactivity ratio r1 of less than 0.7 relative to a total of 100 parts by mass of the structural unit derived from a vinyl halide monomer, the structural unit derived from a copolymerization monomer that has a reactivity ratio r1 of less than 0.7 and a structural unit derived from a copolymerization monomer that has a reactivity ratio r1 of 0.7 or more is 1 part by mass or more. This aqueous dispersion of a vinyl halide copolymer is also characterized in that if S1 is the area of a melting peak that has a melting peak temperature of 170°C or more and S2 is the area of a melting peak that has a melting peak temperature of less than 170°C, S1/(S1 + S2) is from 0 to 0.33.

Inventors:
HOSOE NATSUKI (JP)
YAMASAKI NAOAKI (JP)
Application Number:
PCT/JP2021/009588
Publication Date:
September 30, 2021
Filing Date:
March 10, 2021
Export Citation:
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Assignee:
ASAHI CHEMICAL IND (JP)
International Classes:
B32B27/30; C08F214/00; C08K3/01; C08L27/08; C09D5/02; C09D7/61; C09D7/63; C09D7/65; C09D127/00; C09D127/08; C09D133/02; C09D133/10; C09D133/20
Domestic Patent References:
WO2013125699A12013-08-29
Foreign References:
JP2018127523A2018-08-16
JP2000302821A2000-10-31
JP2001342317A2001-12-14
JPS60192629A1985-10-01
JPH09296014A1997-11-18
JP2000248493A2000-09-12
JPH1135763A1999-02-09
JPS5776044A1982-05-12
JPH10158455A1998-06-16
JPS60192768A1985-10-01
JP2020146909A2020-09-17
Attorney, Agent or Firm:
SUGIMURA Kenji (JP)
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