Expandable and expanded alkenyl aromatic polymer particles and methods
of making the same

    公开(公告)号:US4839396A

    公开(公告)日:1989-06-13

    申请号:US234986

    申请日:1988-08-22

    申请人: Martin H. Tusim

    发明人: Martin H. Tusim

    IPC分类号: C08J9/00 C08J9/16 C08K5/134

    摘要: The present invention relates to expandable and expanded alkenyl aromatic polymer particles having the ability to use a decreased amount of blowing agent to produce an expanded alkenyl aromatic polymer particle of an equivalent bulk density or the same amount of blowing agent to produce an expanded alkenyl aromatic polymer particle having a decreased bulk density by including a density modifier in the expandable alkenyl aromatic polymer particle in an amount of about 0.005 to 0.5 weight percent by weight of the total mixture. Also included as part of the invention are methods of making the expandable and expanded alkenyl aromatic polymer particles wherein the expandable and expanded alkenyl aromatic polymer particles have a density modifier included in an amount of about 0.005 percent to about 0.5 weight percent by weight of the total mixture.

    Plasticizers for expandable styrene-acrylonitrile resin
    7.
    发明授权
    Plasticizers for expandable styrene-acrylonitrile resin 失效
    可膨胀苯乙烯 - 丙烯腈树脂增塑剂

    公开(公告)号:US5071606A

    公开(公告)日:1991-12-10

    申请号:US582043

    申请日:1990-09-13

    IPC分类号: C08J9/00

    CPC分类号: C08J9/0023 C08J2325/12

    摘要: Novel, expandable polymeric blends comprising at least one vinylaromatic monomer-acylonitrile resinous material, an effective amount of at least one blowing agent, and from about 0.2 to about 1.0 percent by weight, based on the weight of resinous material, of an expansion aid consisting essentially of triethylene glycol. The triethylene glycol expansion aid unexpectedly reduces the amount of expansion agent required to expand the composition, particularly to low density products, without adversely affecting the final properties of the foamed product.

    摘要翻译: 包含至少一种乙烯基芳族单体 - 酰基腈树脂材料,有效量的至少一种发泡剂和基于树脂材料重量的约0.2至约1.0重量%的膨胀助剂的新型可发泡聚合物共混物包含 基本上是三甘醇。 三乙二醇膨胀助剂意外地减少了扩展组合物所需的膨胀剂的量,特别是低密度产品,而不会不利地影响发泡产品的最终性能。

    Olefin polymer and .alpha.-olefin/vinyl or .alpha.-olefin/vinylidene
interpolymer blend foams
    8.
    发明授权
    Olefin polymer and .alpha.-olefin/vinyl or .alpha.-olefin/vinylidene interpolymer blend foams 失效
    烯烃聚合物和α-烯烃/乙烯基或α-烯烃/亚乙烯基互聚物共混物泡沫

    公开(公告)号:US6160029A

    公开(公告)日:2000-12-12

    申请号:US521169

    申请日:2000-03-08

    摘要: A polymer blend foam having smooth skin and/or an open-cell content of at least 20 volume percent, a crosslinked gel content of no greater than 10 percent, a minimum cross-sectional area of at least 1000 mm.sup.2, and a density of no greater than 250 kg/m.sup.3. The blend includes (A) a substantially random interpolymer having polymerized therein (1) a vinyl or vinylidene aromatic monomer and/or a sterically hindered aliphatic or cycloaliphatic vinyl or vinylidene monomer, and (2) one or more of ethylene and a C.sub.3-20 aliphatic .alpha.-olefin; and (B) an olefin polymer based on one or more of ethylene, C.sub.3-20 aliphatic .alpha.-olefins, and C.sub.3-20 aliphatic .alpha.-olefins containing polar groups. The olefin polymer (B) lacks any of the vinyl or vinylidene aromatic monomers found in (A).

    摘要翻译: 具有至少20体积%的光滑皮肤和/或开放细胞含量,不大于10%的交联凝胶含量,至少1000mm 2的最小横截面积和无密度的聚合物共混泡沫体 大于250 kg / m3。 共混物包括(A)其中聚合有(1)乙烯基或亚乙烯基芳族单体和/或空间位阻脂族或脂环族乙烯基或亚乙烯基单体的基本上无规的互聚物,和(2)一种或多种乙烯和C 3-20 脂肪族α-烯烃; 和(B)基于一种或多种乙烯,C 3-20脂族α-烯烃和含有极性基团的C 3-20脂族α-烯烃的烯烃聚合物。 烯烃聚合物(B)在(A)中没有任何乙烯基或亚乙烯基芳族单体。

    Anti-clumping agents for expandable vinylaromatic-acrylonitrile
polymeric materials
    9.
    发明授权
    Anti-clumping agents for expandable vinylaromatic-acrylonitrile polymeric materials 失效
    用于可膨胀乙烯基芳香族 - 丙烯腈聚合物材料的抗凝结剂

    公开(公告)号:US5006565A

    公开(公告)日:1991-04-09

    申请号:US516020

    申请日:1990-04-27

    IPC分类号: C08J9/224

    CPC分类号: C08J9/224 C08J2325/00

    摘要: The clumping together of expandable vinylaromatic-acrylonitrile copolymer particles during expansion of such particles is substantially completely reduced by coating the unexpanded virgin particles with from 0.2 to 1.5 weight percent, based on weight of expandable copolymer particles, of particulate magnesium oxide.

    摘要翻译: 通过以0.2〜1.5重量%的可膨胀共聚物颗粒的重量的颗粒状氧化镁涂覆未膨胀的原始颗粒,基本上完全降低了在这种颗粒膨胀期间可膨胀乙烯基芳族 - 丙烯腈共聚物颗粒的聚集在一起。

    Expandable and expanded alkenyl aromatic polymer particles and methods
of making the same
    10.
    发明授权
    Expandable and expanded alkenyl aromatic polymer particles and methods of making the same 失效
    可扩展和扩展的链烯基芳族聚合物颗粒及其制备方法

    公开(公告)号:US4866098A

    公开(公告)日:1989-09-12

    申请号:US302511

    申请日:1989-01-27

    申请人: Martin H. Tusim

    发明人: Martin H. Tusim

    IPC分类号: C08J9/00 C08J9/16 C08K5/134

    摘要: The present invention relates to expandable and expanded alkenyl aromatic polymer particles having the ability to use a decreased amount of blowing agent to produce an expanded alkenyl aromatic polymer particle of an equivalent bulk density or the same amount of blowing agent to produce an expanded alkenyl aromatic polymer particle having a decreased bulk density by including a density modifier in the expandable alkenyl aromatic polymer particle in an amount of about 0.005 to 0.5 weight percent by weight of the total mixture. Also included as part of the invention are methods of making the expandable and expanded alkenyl aromatic polymer particles wherein the expandable and expanded alkenyl aromatic polymer particles have a density modifier included in an amount of about 0.005 percent to about 0.5 weight percent by weight of the total mixture.

    摘要翻译: 本发明涉及可膨胀和膨胀的链烯基芳族聚合物颗粒,其具有使用减少量的发泡剂以产生等效堆积密度的膨胀的烯基芳族聚合物颗粒或相同量的发泡剂以产生膨胀的链烯基芳族聚合物 通过在可膨胀的链烯基芳族聚合物颗粒中包含以总混合物的重量计为约0.005至0.5重量%的量的密度调节剂来减小堆积密度的颗粒。 作为本发明的一部分还包括制备可膨胀和膨胀的链烯基芳族聚合物颗粒的方法,其中可膨胀和膨化的链烯基芳族聚合物颗粒具有包含的密度调节剂,其量为总重量的约0.005重量%至约0.5重量% 混合物。