公开(公告)号：WO0034363A3

公开(公告)日：2000-09-21

申请号：PCT/US9926970

申请日：1999-11-16

Applicant: DOW CHEMICAL CO ,  CHAUDHARY BHARAT I ,  HOOD LAWRENCE S ,  BARRY RUSSELL P

Inventor： CHAUDHARY BHARAT I ,  HOOD LAWRENCE S ,  BARRY RUSSELL P

IPC: C08J9/04 ,  C08J9/00 ,  C08L23/00 ,  C08L23/08 ,  C08L25/00 ,  C08L25/04 ,  C08L25/06

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

Abstract: 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 alpha -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).

Abstract translation: 具有小于约65的Asker C硬度的软质泡沫，包括：（A）30至70重量％（基于组分A和B的组合重量）一种或多种链烯基芳族聚合物，并且其中至少一种 的所述链烯基芳族聚合物的分子量（Mw）为100,000至500,000; 和（B）30至70重量％（基于组分A和B的组合重量）一种或多种具有0.1至50g / 10min的I 2，Mw / Mn为1.5至20的基本无规共聚体; 包括（1）8至45摩尔％的衍生自（a）至少一种乙烯基或亚乙烯基芳族单体的聚合物单元，或（b）至少一种受阻脂族或脂环族乙烯基或亚乙烯基单体，或（c）组合 的至少一种芳族乙烯基或亚乙烯基单体和至少一种受阻脂族或脂环族乙烯基或亚乙烯基单体，和（2）55至92摩尔％的衍生自乙烯和/或C 3-20α-烯烃中的至少一种的聚合物单元 烯烃; 和（3）0-20摩尔％的衍生自一种或多种烯属不饱和可聚合单体的衍生自（1）和（2）的烯属不饱和可聚合单体的聚合物单元; 和（C）任选的一种或多种成核剂; 和（D）任选的一种或多种其它添加剂; 和（E）一种或多种发泡剂，其总量为每千克0.4-5.0克摩尔（基于组分A和组分B的组合重量）。

公开(公告)号：WO1998010015A1

公开(公告)日：1998-03-12

申请号：PCT/US1997015533

申请日：1997-09-04

Applicant: THE DOW CHEMICAL COMPANY ,  PARK, Chung, P. ,  BROOS, Rene ,  THOEN, Johan ,  GUEST, Martin, J. ,  CHEUNG, Yunwa, W. ,  GATHERS, John, J. ,  CHAUDHARY, Bharat, I. ,  HOOD, Lawrence, S.

Inventor： THE DOW CHEMICAL COMPANY

IPC: C08L23/02

CPC classification number: 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

Abstract: Thermoplastic blends are prepared from polymeric materials comprising (A) from 1 to 99 weight percent of at least one interpolymer made from monomer components comprising (1) from 1 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 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 (1) from 1 to 100 mole percent of at least one alpha -olefin having from 2 to 20 carbon atoms, and (2) from 0 to 99 mole percent of at least one alpha -olefin having from 2 to 20 carbon atoms which monomer is different from the monomer of component (B-1). These blends possess improved properties when compared to the properties of the polymers comprising the blend. These blends are useful in the preparation of films, fabricated articles, injection molded parts, bitumen and asphalt modification, hot melt and pressure sensitive adhesive systems.

Abstract translation: 由（A）1至99重量％的至少一种由单体组分制成的互聚物的聚合材料制备热塑性共混物，所述共聚体包含（1）1至65摩尔％的（a）至少一种芳族亚乙烯基单体，或（b ）至少一种受阻脂族或脂环族亚乙烯基单体，或（c）至少一种芳族亚乙烯基单体和至少一种受阻脂族或脂环族亚乙烯基单体的组合，和（2）99至35摩尔％的至少一种脂族 具有2至20个碳原子的α-烯烃; 和（B）99至1重量％的至少一种由单体组分制成的聚合物，其包含（1）1至100摩尔％的至少一种具有2至20个碳原子的α-烯烃，和（2）0 至99摩尔％的至少一种具有2至20个碳原子的α-烯烃，其单体不同于组分（B-1）的单体。 当与包含共混物的聚合物的性质相比时，这些共混物具有改进的性能。 这些共混物可用于制备薄膜，制品，注模部件，沥青和沥青改性剂，热熔和压敏粘合剂体系。

公开(公告)号：WO1997022455A1

公开(公告)日：1997-06-26

申请号：PCT/US1995016514

申请日：1995-12-20

Applicant: THE DOW CHEMICAL COMPANY ,  CHAUDHARY, Bharat, I.

Inventor： THE DOW CHEMICAL COMPANY

IPC: B29C44/56

CPC classification number: C08J9/36 ,  B29C44/5609 ,  C08J9/14 ,  C08J2323/04

Abstract: Disclosed is an extruded, dimensionally stable, ethylene polymer foam. The foam comprises an ethylene polymer material of 90 percent or more by weight of ethylene monomeric units. The foam has a density of 50 kilograms per cubic meter or more. The foam is substantially free of a permeability modifier. The foam has a fast-permeating blowing agent. The foam has a multiplicity of channels extending from a surface into the foam. The channels are free of direction with respect to the longitudinal extension of the foam. The channels allow permeation of blowing agent out of the foam and permeation of air into the foam (curing) to be accelerated. The foam resists collapse during curing due to the stiff nature of the foam polymer matrix. Further disclosed is a process for making the foam and a method for enhancing the release of blowing agent from the foam.

Abstract translation: 公开了挤出的，尺寸稳定的乙烯聚合物泡沫。 泡沫体包含乙烯聚合物材料，其为乙烯单体重量的90％或更多。 泡沫的密度为每立方米50公斤以上。 泡沫基本上不含渗透性改性剂。 泡沫具有快速渗透的发泡剂。 泡沫具有从表面延伸到泡沫中的多个通道。 通道相对于泡沫的纵向延伸方向没有方向。 通道允许发泡剂从泡沫中渗透并且空气渗入泡沫（固化）中以加速。 由于泡沫聚合物基质的刚性，泡沫在固化过程中抵抗塌陷。 进一步公开了一种制造泡沫的方法和一种增强发泡剂从泡沫中释放的方法。