Title:
(METH)ACRYLIC BLOCK COPOLYMER, (METH)ACRYLIC BLOCK COPOLYMER LATEX, (METH)ACRYLIC BLOCK COPOLYMER LATEX COMPOSITION, AND SHAPED OBJECT
Document Type and Number:
WIPO Patent Application WO/2022/202555
Kind Code:
A1
Abstract:
Provided are: a (meth)acrylic block copolymer, a (meth)acrylic block copolymer latex, and a (meth)acrylic block copolymer latex composition which give films by dip forming that are excellent in terms of flexibility, tensile property, and heat aging resistance, even with a vulcanizing agent and a vulcanization accelerator used in reduced amounts or without either of these; and a shaped object. This (meth)acrylic block copolymer comprises a polymer block (A) and a (meth)acrylic polymer block (B), wherein the content of the polymer block (A) is 5-30 mass% and the content of the (meth)acrylic polymer block (B) is 70-95 mass%, with respect to the (meth)acrylic block copolymer, which is taken as 100 mass%, and wherein the polymer block (A) comprises a monomer unit derived from a monomer which, when polymerized alone, gives a polymer having a glass transition temperature of 80°C or higher. When a (meth)acrylic block copolymer latex including the (meth)acrylic block copolymer is dip-formed and heat-treated, the obtained film has a tensile strength at rupture of 14 MPa or greater.
Inventors:
NISHINO WATARU (JP)
KUMAGAI YUSHI (JP)
SHIMOTOMAI IBUKI (JP)
SAITO YUTAKA (JP)
KUMAGAI YUSHI (JP)
SHIMOTOMAI IBUKI (JP)
SAITO YUTAKA (JP)
Application Number:
PCT/JP2022/011968
Publication Date:
September 29, 2022
Filing Date:
March 16, 2022
Export Citation:
Assignee:
DENKA COMPANY LTD (JP)
International Classes:
C08F257/00; C08F265/00; C08L53/00
Domestic Patent References:
| WO2020145206A1 | 2020-07-16 | |||
| WO2017073287A1 | 2017-05-04 |
Foreign References:
| JP2003155463A | 2003-05-30 | |||
| JPH039914A | 1991-01-17 | |||
| JP2020037635A | 2020-03-12 | |||
| JPH05500827A | 1993-02-18 |
Attorney, Agent or Firm:
SK INTELLECTUAL PROPERTY LAW FIRM et al. (JP)
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