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Title:
BLOCK COPOLYMER COMPOSITION
Document Type and Number:
WIPO Patent Application WO/2005/010096
Kind Code:
A1
Abstract:
A block copolymer composition which is excellent in the balance between transparency and impact resistance and is improved particularly in the impact resistance of products of high-shear injection by inhibiting the products from becoming anisotropic. A block copolymer composition obtained by blending two block copolymers which are each composed of a hard segment block part consisting of a block made mainly from a vinyl aromatic hydrocarbon and a soft segment block part consisting of a block made mainly from a conjugated diene and which are specified in the structure of the hard segment block part. The molded articles made from the composition by not only extrusion or blow molding but also injection are remarkably improved in impact resistance without lowering the transparency.

Inventors:
Watanabe, Jun c/o Denki Kagaku Kogyo Kabushiki Kaisha (Chuo Kenkyusho 5-1, Asahimachi 3-chom, Machida-shi Tokyo 60, 19485, JP)
Kurimura, Hiroyuki c/o Denki Kagaku Kogyo Kabushiki Kaisha (Chuo Kenkyusho 5-1, Asahimachi 3-chom, Machida-shi Tokyo 60, 19485, JP)
Suzuki, Shigeru c/o Denki Kagaku Kogyo Kabushiki Kaisha (Chuo Kenkyusho 5-1, Asahimachi 3-chom, Machida-shi Tokyo 60, 19485, JP)
Oda, Takeshi c/o Denki Kagaku Kogyo Kabushiki Kaisha (Chuo Kenkyusho 5-1, Asahimachi 3-chom, Machida-shi Tokyo 60, 19485, JP)
Shimizu, Norihiro c/o Denki Kagaku Kogyo Kabushiki Kaisha (Chuo Kenkyusho 5-1, Asahimachi 3-chom, Machida-shi Tokyo 60, 19485, JP)
Application Number:
PCT/JP2004/011099
Publication Date:
February 03, 2005
Filing Date:
July 28, 2004
Export Citation:
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Assignee:
DENKI KAGAKU KOGYO KABUSHIKI KAISHA (1-1 Nihonbashi-Muromachi 2-chome, Chuo-ku, Tokyo, 103-8338, JP)
Watanabe, Jun c/o Denki Kagaku Kogyo Kabushiki Kaisha (Chuo Kenkyusho 5-1, Asahimachi 3-chom, Machida-shi Tokyo 60, 19485, JP)
Kurimura, Hiroyuki c/o Denki Kagaku Kogyo Kabushiki Kaisha (Chuo Kenkyusho 5-1, Asahimachi 3-chom, Machida-shi Tokyo 60, 19485, JP)
Suzuki, Shigeru c/o Denki Kagaku Kogyo Kabushiki Kaisha (Chuo Kenkyusho 5-1, Asahimachi 3-chom, Machida-shi Tokyo 60, 19485, JP)
Oda, Takeshi c/o Denki Kagaku Kogyo Kabushiki Kaisha (Chuo Kenkyusho 5-1, Asahimachi 3-chom, Machida-shi Tokyo 60, 19485, JP)
Shimizu, Norihiro c/o Denki Kagaku Kogyo Kabushiki Kaisha (Chuo Kenkyusho 5-1, Asahimachi 3-chom, Machida-shi Tokyo 60, 19485, JP)
International Classes:
C08F299/02; G11B7/253; (IPC1-7): C08L53/02
Foreign References:
JP2003001766A
JPH07216186A
JPH07238207A
Other References:
See also references of EP 1650258A1
Attorney, Agent or Firm:
Senmyo, Kenji (Torimoto Kogyo Bldg, 38 Kanda-Higashimatsushitach, Chiyoda-ku Tokyo 42, 10100, JP)
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