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    THERMOELASTIC BLEND COMPOSITIONS
    2.
    发明公开
    THERMOELASTIC BLEND COMPOSITIONS 失效
    热塑性组合

    公开(公告)号：EP0767814A1

    公开(公告)日：1997-04-16

    申请号：EP95923682.0

    申请日：1995-06-01

    申请人： THE DOW CHEMICAL COMPANY

    发明人： BETSO, Stephen, R. ,  GUEST, Martin, J. ,  VAN DEN BERGHEN, Peter, F., M. ,  BATISTINI, Antonio ,  AHMED, Wasif, K. ,  HO, Thoi, H. ,  KNIGHT, George, W. ,  PARIKH, Deepak, R. ,  PATEL, Rajen, M.

    IPC分类号： C08L23 ,  C08L53 ,  C09D153 ,  C09J153

    CPC分类号： C09D153/02 ,  C08L23/0815 ,  C08L53/02 ,  C08L2314/06 ,  C08L2666/02 ,  C08L2666/04 ,  C09J153/02

    摘要： The present invention is at least a two-component thermoplastic elastomeric composition comprising at least one block copolymer wherein the composition has essentially the same comparative elasticity, high temperature serviceability and hardness as the unmodified, undiluted (neat) block copolymer portion of the composition. The composition also shows enhanced thermal stability and processibility and is well suited for fabricating elastic moldings, films and fibers as well as for formulating with asphalts, adhesives and sealants. The novel thermoplastic elastomeric composition comprises (a) from about 50 to about 99 percent by weight of at least one block copolymer and (b) about 1 to about 50 percent by weight of at least one ethylene interpolymer having a density from about 0.855 g/cc to about 0.905 g/cc, wherein the ethylene interpolymer in the amount employed is a substantially inert extender of the block copolymer and the composition is further characterized as having:i. storage moduli throughout the range of -26° C. to 24° C. of less than about 3.5x109 dynes/cm2,ii. a ratio of storage modulus at -26° C. to storage modulus at 24° C. of less than about 4, andiii. storage moduli at -26° C. and 24° C. about 0.2 to about 3 times higher than the storage moduli at -26° C. and 24° C., respectively, of the neat block copolymer portion of the composition.

    THERMOPLASTIC COMPOSITIONS OF INTERPOLYMERS OF ALPHA-OLEFIN MONOMERS WITH ONE OR MORE VINYL OR VINYLIDENE AROMATIC MONOMERS AND/OR ONE OR MORE HINDERED ALIPHATIC OR CYCLOALIPHATIC VINYL OR VINYLIDENE MONOMERS BLENDED WITH VINYL HALIDE HOMOPOLYMERS AND COPOLYMERS
    6.
    发明公开
    THERMOPLASTIC COMPOSITIONS OF INTERPOLYMERS OF ALPHA-OLEFIN MONOMERS WITH ONE OR MORE VINYL OR VINYLIDENE AROMATIC MONOMERS AND/OR ONE OR MORE HINDERED ALIPHATIC OR CYCLOALIPHATIC VINYL OR VINYLIDENE MONOMERS BLENDED WITH VINYL HALIDE HOMOPOLYMERS AND COPOLYMERS 审中-公开
    与卤乙烯聚合物或共聚物的一种或多种乙烯基或亚乙烯基芳族单体和/或一种或多种受阻的脂族或脂环族的乙烯基或亚乙烯基单体的α-烯烃单体的互聚物的共混物的热塑性组合物

    公开(公告)号：EP1023385A1

    公开(公告)日：2000-08-02

    申请号：EP98953586.9

    申请日：1998-10-15

    申请人： THE DOW CHEMICAL COMPANY

    发明人： CHEUNG, Yunwa, W. ,  GUEST, Martin, J.

    IPC分类号： C08L23/02 ,  C08L25/02 ,  C08L27/02 ,  C08J5/18

    CPC分类号： C08J5/18 ,  C08J2323/08 ,  C08L23/0838 ,  C08L25/06 ,  C08L27/06 ,  C08L2314/06 ,  C09D123/0838 ,  C08L2666/04

    摘要： The present invention relates to blend compositions comprising: (A) of from 1 to 99 weight percent based on the combined weights of Components A, B and C of at least one substantially random interpolymer; and wherein said interpolymer: (1) contains of from 0.5 to 65 mole percent of polymer units derived from: (a) at least one vinyl or vinylidene aromatic monomer, or (b) at least one hindered aliphatic vinyl or vinylidene monomer, or (c) a combination of at least one vinyl or vinylidene aromatic monomer and at least one hindered aliphatic vinyl or vinylidene monomer; (2) contains of from 35 to 99.5 mole percent of polymer units derived from at least one aliphatic α-olefin having from 2 to 20 carbon atoms; (3) has a molecular weight (Mn) greater than 1,000; (4) has a melt index (I2) of from 0.01 to 1,000; (5) has a molecular weight distribution (Mw/Mn) of from 1.5 to 20; and (B) of from 99 to 1 weight percent based on the combined weights of Components A, B and C of one or more vinyl halide homopolymer(s) or copolymer(s); and (C) of from 0 to 70 weight percent based on the combined weights of Components A, B and C of one or more plasticizers. The novel blend compositions provide materials with improved processing/property attributes over the unmodified polymers comprising the blends. The blend compositions can exhibit a unique balance of properties including enhanced modulus and barrier properties, improved tensile strength, radio frequency (rf) sealability, solvent bondability, thermal stability and heat resistance depending upon the selection of the individual blend components and their composition ratios. Additionally, the location and the breadth of the glass transition can be controlled by varying the blend compositions and plasticizer level. Surprisingly blends including a plasticizer show a single phase material from glass transition temperature data analysis.

    THERMOELASTIC BLEND COMPOSITIONS
    10.
    发明授权
    THERMOELASTIC BLEND COMPOSITIONS 失效
    热塑性组合

    公开(公告)号：EP0767814B1

    公开(公告)日：1999-08-25

    申请号：EP95923682.9

    申请日：1995-06-01

    申请人： THE DOW CHEMICAL COMPANY

    发明人： BETSO, Stephen, R. ,  GUEST, Martin, J. ,  VAN DEN BERGHEN, Peter, F., M. ,  BATISTINI, Antonio ,  AHMED, Wasif, K. ,  HO, Thoi, H. ,  KNIGHT, George, W. ,  PARIKH, Deepak, R. ,  PATEL, Rajen, M.

    IPC分类号： C08L53/02 ,  C08L23/16

    CPC分类号： C09D153/02 ,  C08L23/0815 ,  C08L53/02 ,  C08L2314/06 ,  C08L2666/02 ,  C08L2666/04 ,  C09J153/02

    摘要： The present invention is at least a two-component thermoplastic elastomeric composition comprising at least one block copolymer wherein the composition has essentially the same comparative elasticity, high temperature serviceability and hardness as the unmodified, undiluted (neat) block copolymer portion of the composition. The composition also shows enhanced thermal stability and processibility and is well suited for fabricating elastic moldings, films and fibers as well as for formulating with asphalts, adhesives and sealants. The novel thermoplastic elastomeric composition comprises (a) from about 50 to about 99 percent by weight of at least one block copolymer and (b) about 1 to about 50 percent by weight of at least one ethylene interpolymer having a density from about 0.855 g/cc to about 0.905 g/cc, wherein the ethylene interpolymer in the amount employed is a substantially inert extender of the block copolymer and the composition is further characterized as having:i. storage moduli throughout the range of -26° C. to 24° C. of less than about 3.5x109 dynes/cm2,ii. a ratio of storage modulus at -26° C. to storage modulus at 24° C. of less than about 4, andiii. storage moduli at -26° C. and 24° C. about 0.2 to about 3 times higher than the storage moduli at -26° C. and 24° C., respectively, of the neat block copolymer portion of the composition.