Title:
METHYL METHACRYLATE-BASED RESIN COMPOSITION AND ITS MOLDED PRODUCT
Document Type and Number:
Japanese Patent JP3508454
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To obtain the subject composition, capable of providing a thick wall even by blow molding without surface skin roughness, etc., and manifesting excellent blow moldability and useful for producing a blow molded product excellent in weather resistance and surface hardness by limiting the melt flow rate and the die swell ratio within specific ranges.
SOLUTION: This composition is a methyl methacrylate-based resin composition having 0.5-20g/10min melt flow rate at 230°C under 3.8kg load and 1.2-2.5 die swell ratio and comprises, e.g. (A) 30-100wt.% branched methyl methacrylate- based polymer having 80,000-400,000 weight-average molecular weight(MW) and 30,000-500,000 molecular weight(Mzb) between branched points specified from the Z-average molecular weight and (B) 0-70wt.% linear methacrylic resin having 70,000-300,000MW.
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Inventors:
Sakamoto, Takashi
Yamamoto, Masashi
Yamamoto, Masashi
Application Number:
JP6638297A
Publication Date:
March 22, 2004
Filing Date:
March 19, 1997
Export Citation:
Assignee:
SUMITOMO CHEM CO LTD
International Classes:
B29C49/00; B29C49/22; C08F20/14; C08L21/00; C08L33/10; C08L33/12; C08L51/04; B29K33/04; (IPC1-7): C08L33/12; B29C49/00; C08F20/14
Attorney, Agent or Firm:
久保山 隆
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