Title:
ACRYLIC RESIN COMPOSITION, AND MOLDED PRODUCT AND FILM MADE FROM SAME
Document Type and Number:
WIPO Patent Application WO/2016/139927
Kind Code:
A1
Abstract:
Provided is an acrylic resin composition with which it is possible to obtain a molded product having excellent shock resistance and other mechanical properties, as well as transparency and hue, and a film with minimal visual defects such as dye-lines and concave defects. In the resin composition containing acrylic resin and graft copolymer according to the present invention, the graft copolymer has a 65-84% gel fraction, and is a multistep polymerization graft copolymer obtained by multistep polymerization containing the following polymerization steps (I) to (III). (I) a monomer mixture (a) mainly containing methacrylate ester and a mixture containing a polyfunctional monomer are polymerized to obtain a hard polymer, (II) a monomer mixture (b) mainly containing acrylate ester and a mixture containing a polyfunctional monomer are polymerized to obtain a soft polymer, (III) a monomer mixture (c) mainly containing methacrylate ester and, as necessary, a mixture containing a polyfunctional monomer, are polymerized to obtain a hard polymer. However, in polymerization step (I), the mixture containing the monomer mixture (a) and polyfunctional monomer is polymerized in the presence of a primary and/or secondary alkyl mercaptan chain transfer agent.
Inventors:
KITAYAMA FUMINOBU
MAIZURU NOBUYOSHI
NAKAMURA MITSURU
KOYAMA HARUKI
MAIZURU NOBUYOSHI
NAKAMURA MITSURU
KOYAMA HARUKI
Application Number:
PCT/JP2016/001093
Publication Date:
September 09, 2016
Filing Date:
March 01, 2016
Export Citation:
Assignee:
KANEKA CORP (JP)
International Classes:
C08L33/04; C08F265/06; C08L51/00
Domestic Patent References:
| WO1999055779A1 | 1999-11-04 |
Foreign References:
| JPH05320457A | 1993-12-03 | |||
| JPH09157476A | 1997-06-17 | |||
| JP2010229201A | 2010-10-14 | |||
| JPH1081805A | 1998-03-31 | |||
| JPH06179794A | 1994-06-28 |
Other References:
See also references of EP 3266827A4
Attorney, Agent or Firm:
PATENT CORPORATE BODY ARCO PATENT OFFICE (JP)
Patent business corporation Owner old patent firm (JP)
Patent business corporation Owner old patent firm (JP)
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