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公开(公告)号：EP1605003A4
公开(公告)日：2007-05-09
申请号：EP04722034
申请日：2004-03-19
发明人： KURIMURA HIROYUKI , WATANABE JUN , OOTSUKA TAKESHI , SUZUKI SHIGERU , ODA TAKESHI , SHIMIZU NORIHIRO
IPC分类号： C08F8/00 , C08F297/04 , C08L25/04 , C08L53/00 , C08L53/02
CPC分类号： C08F297/04 , C08F297/044 , C08L25/04 , C08L53/02 , C08L2666/04
摘要： A block copolymer mixture containing a star-branched block copolymer which mixture is excellent in the balance between transparency and impact resistance and can give molded articles which do not suffer from anisotropy and therefore exhibit improved impact resistance even when the articles are produced by injection molding under high shearing. A block copolymer mixture containing a star-branched block copolymer which mixture contains three kinds of vinyl aromatic hydrocarbon polymer blocks (S1, S2 and S3) different in molecular weight, characterized in that the molecular weight distribution of the mixture of the blocks S1, S2 and S3 falls within a specific range and that in the gel permeation chromatogram of the mixture of the blocks S1, S2 and S3, M1/M3 and M2/M3 fall within specific ranges wherein M1, M2 and M3 are the peak-top molecular weights of the blocks S1, S2 and S3 respectively.
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公开(公告)号：EP1650258A4
公开(公告)日：2009-02-18
申请号：EP04771152
申请日：2004-07-28
IPC分类号： C08L53/02 , C08F299/02 , G11B7/253
CPC分类号： C08F299/022 , C08G81/022 , C08L53/02 , C08L2666/02
摘要： 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.
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公开(公告)号：EP1605004A4
公开(公告)日：2007-06-27
申请号：EP04745246
申请日：2004-03-19
发明人： KURIMURA HIROYUKI , WATANABE JUN , ODA TAKESHI , SHIMIZU NORIHIRO
IPC分类号： C08F297/04 , C08L53/00 , C08L53/02
CPC分类号： C08L53/02 , C08F297/04 , C08L53/00
摘要： A linear block copolymer composition having excellent balance between transparency and impact resistance not only in an extrusion molded product and a blow molded product but also in an injection molded product, comprising at least three types of copolymer blocks with different molecular weights in which vinyl aromatic hydrocarbon is used as a monomer unit, wherein the molecular weight distribution of the mixture of the copolymer blocks comes within a specified range. Where a peak top molecular weight corresponding to a peak at which the peak top molecular weight becomes maximum among peaks at which the ratios of the areas thereof to all peak area come within 30% or more in the GPC of the mixture is M1 and a peak top molecular weight corresponding to a peak at which the peak top molecular weight become minimum among the peaks at which peak top molecular weights come within the range of 50,000 or less and the ratios of the areas thereof to all peak areas come within 20% or more in the GPC of the mixture is M2, M1/M2 comes within a specified range.
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公开(公告)号：EP1550690A4
公开(公告)日：2006-12-06
申请号：EP03758718
申请日：2003-10-08
发明人： SUZUKI SHIGERU , ODA TAKESHI , SHIMIZU NORIHIRO
CPC分类号： B32B27/302 , B29C61/0608 , B32B27/08 , B32B27/28 , B32B2439/00 , C08J5/18 , C08J2353/02 , C08L25/06 , C08L53/02 , Y10T428/1328 , Y10T428/2495 , Y10T428/254 , Y10T428/31931 , Y10T428/31935 , C08L2666/04
摘要： A heat-shrinkable film and a heat-shrinkable multi-layer film which are prepared from a resin composition which comprises an aromatic vinyl compound-conjugated diene block copolymer having a microphase separated structure comprising a soft phase and a hard phase and further having a specific structure and preferably exhibiting a specific dynamic viscoelasticity spectrum and a styrene polymer having a syndiotactic structure, in a specific ratio. The heat-shrinkable film or a heat-shrinkable multi-layer film offers an excellent balance of heat resistance, high shrinkability especially at a low temperature, the resistance to natural shrinking, chemical resistance and rigidity.
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