公开(公告)号：EP0923617A1

公开(公告)日：1999-06-23

申请号：EP97939786.0

申请日：1997-09-04

申请人： THE DOW CHEMICAL COMPANY

发明人： PARK, Chung, P. ,  BROOS, Rene ,  THOEN, Johan ,  GUEST, Martin, J. ,  CHEUNG, Yunwa, W. ,  GATHERS, John, J. ,  CHAUDHARY, Bharat, I. ,  HOOD, Lawrence, S.

IPC分类号： C08J5 ,  C08F210 ,  C08J9 ,  C08L23 ,  C08L25 ,  C09J123 ,  C09J125 ,  E04F13 ,  E04F15

CPC分类号： C09J123/16 ,  C08L23/02 ,  C08L23/04 ,  C08L23/08 ,  C08L23/0815 ,  C08L23/0838 ,  C08L23/0846 ,  C08L23/0853 ,  C08L23/0869 ,  C08L23/16 ,  C08L25/06 ,  C08L25/08 ,  C08L2203/14 ,  C08L2666/04 ,  C09J125/08

摘要： A fabricated article other than a film comprising a thermoplastic blend prepared from polymeric materials consisting of; (A) from 1 to 99 weight percent of at least one interpolymer made from monomer components comprising (1) from 0.5 to 65 mole percent of (a) at least one aromatic vinylidene monomer, or (b) at least one hindered aliphatic or cycloaliphatic vinylidene monomer, or (c) a combination of at least one aromatic vinylidene monomer and at least one hindered aliphatic or cycloaliphatic vinylidene monomer, and (2) from 99.5 to 35 mole percent of at least one aliphatic alpha-olefin having from 2 to 20 carbon atoms; and (B) from 99 to 1 weight percent of at least one polymer made from monomer components comprising at least one alpha-olefin having from 2 to 20 carbon atoms.These articles possess improved properties when compared to the properties of articles derived from the individual polymers comprising the blend. These articles are useful in the preparation of injection molded parts, bitumen and asphalt modification, hot melt and pressure sensitive adhesive systems.

公开(公告)号：EP1144489A2

公开(公告)日：2001-10-17

申请号：EP99961671.7

申请日：1999-11-16

申请人： THE DOW CHEMICAL COMPANY

发明人： CHAUDHARY, Bharat, I. ,  HOOD, Lawrence, S. ,  BARRY, Russell, P.

IPC分类号： C08J9/00

CPC分类号： C08J9/0061 ,  C08J2325/08 ,  C08J2423/00 ,  C08L23/08 ,  C08L23/0838 ,  C08L25/04 ,  C08L25/06 ,  C08L2203/14 ,  Y10S264/05 ,  Y10T428/249953 ,  Y10T428/249977 ,  C08L2666/04

摘要： A soft foam having an Asker C hardness of less than about 65, comprising: (A) from 30 to 70 percent by weight (based on the combined weight of Components A and B) of one or more alkenyl aromatic polymers and wherein at least one of said alkenyl aromatic polymers has a molecular weight (Mw) of from 100,000 to 500,000; and (B) from 30 to 70 percent by weight (based on the combined weight of Components A and B) of one or more substantially random interpolymers having an I2 of 0.1 to 50g/10 min, an Mw/Mn of 1.5 to 20; comprising (1) from 8 to 45 mol percent of polymer units derived from: (a) at least one vinyl or vinylidene aromatic monomer, or (b) at least one hindered aliphatic or cycloaliphatic vinyl or vinylidene monomer, or (c) a combination of at least one aromatic vinyl or vinylidene monomer and at least one hindered aliphatic or cycloaliphatic vinyl or vinylidene monomer, and (2) from 55 to 92 mol percent of polymer units derived from at least one of ethylene and/or a C3-20 α-olefin; and (3) from 0 to 20 mol percent of polymer units derived from one or more of ethylenically unsaturated polymerizable monomers other than those derived from (1) and (2); and (C) optionally, one or more nucleating agents; and (D) optionally, one or more other additives; and (E) one or more blowing agents present in a total amount of from 0.4 to 5.0 gram-moles per kilogram (based on the combined weight of Components A and B).

公开(公告)号：EP1135431A2

公开(公告)日：2001-09-26

申请号：EP99968043.2

申请日：1999-11-16

申请人： THE DOW CHEMICAL COMPANY

发明人： CHAUDHARY, Bharat, I. ,  HOOD, Lawrence, S. ,  BARRY, Russell, P. ,  PARK, Chung, P.

IPC分类号： C08J9/00 ,  C08L23/08 ,  C08L25/06

CPC分类号： C08J9/0061 ,  C08J9/04 ,  C08J9/16 ,  C08J2205/052 ,  C08J2325/04 ,  C08J2423/00 ,  C08J2425/00 ,  Y10S264/05 ,  Y10T428/249953 ,  Y10T428/249954 ,  Y10T428/249976 ,  Y10T428/249977 ,  Y10T428/268

摘要： This invention pertains to a composition and a process for preparing a closed cell alkenyl aromatic polymer foam having enlarged cell size, comprising one or more alkenyl aromatic polymers, one or more substantially random interpolymers, one or more blowing agents having zero ozone depletion potential and optionally one or more co-blowing agents, and optionally, one or more nucleating agents and optionally, one or more other additives. This combination allows the manufacture of closed cell, low density alkenyl aromatic polymer foams of enlarged cell size, when blowing agents of relatively high nucleation potential are employed. When such blowing agents are used with alkenyl aromatic polymers in the absence of the substantially random interpolymers, small cell foams result.

摘要翻译： 本发明涉及用于制备具有增大的泡孔尺寸的闭孔链烯基芳族聚合物泡沫的组合物和方法，其包含一种或多种链烯基芳族聚合物，一种或多种基本上无规的共聚体，一种或多种具有零臭氧消耗势的发泡剂和任选 一种或多种共发泡剂，以及任选的一种或多种成核剂和任选的一种或多种其他添加剂。 当采用具有相对高成核电势的发泡剂时，这种组合允许制造具有增大的泡孔尺寸的闭孔，低密度链烯基芳族聚合物泡沫。 当这种发泡剂与链烯基芳族聚合物在不存在基本上无规共聚体的情况下一起使用时，产生小泡孔泡沫。