Title:
メタクリル系樹脂組成物
Document Type and Number:
Japanese Patent JP6666835
Kind Code:
B2
Abstract:
It is an object of the present invention to provide a methacrylic resin composition that realizes both delamination resistance and hot water whitening resistance and that makes it possible to form a film excellent in terms of transparency, flex cracking (whitening) resistance, and appearance. The methacrylic resin composition includes an acrylic graft copolymer containing an acrylic acid ester-based rubbery polymer. In the methacrylic resin composition:
(1) a content of the acrylic acid ester-based rubbery polymer is 10 to 40 wt%; (2) a mean particle diameter d of the acrylic acid ester-based rubbery polymer is 50 to 200 nm; (3) a relationship between the mean particle diameter d (nm) of the acrylic acid ester-based rubbery polymer and a cross-linking agent content w (wt%) in a monomer mixture used in the acrylic acid ester-based rubbery polymer satisfies 0.02d ¤ w ¤ 0.05d; (4) a graft ratio of the acrylic graft copolymer is 60 to 105 %; and (5) a reduced viscosity of a component of the methacrylic resin composition, the component being soluble in methyl ethyl ketone, is 0.75 to 1.3 dl/g.
Inventors:
Hiroshi Fujiwara
Keisuke Hatano
Fuminobu Kitayama
Keisuke Hatano
Fuminobu Kitayama
Application Number:
JP2016506151A
Publication Date:
March 18, 2020
Filing Date:
March 06, 2015
Export Citation:
Assignee:
Kaneka Corporation
International Classes:
B32B27/30; C08L51/04; C08J5/18; C08K5/3475; C08L33/10
Domestic Patent References:
| JP2003128734A | ||||
| JP2003327633A | ||||
| JP2006008900A | ||||
| JP2007091981A |
Foreign References:
| WO2007004670A1 | ||||
| WO2004035683A1 |
Attorney, Agent or Firm:
Patent business corporation Yuko patent office