Acrylic pressure-sensitive adhesive composition and process for producing the same
    2.
    发明授权
    Acrylic pressure-sensitive adhesive composition and process for producing the same 有权
    丙烯酸类压敏粘合剂组合物及其制造方法

    公开(公告)号:US06376633B1

    公开(公告)日:2002-04-23

    申请号:US09472870

    申请日:1999-12-28

    IPC分类号: C08F12018

    CPC分类号: C08F220/18 C08F20/12

    摘要: An acrylic pressure-sensitive adhesive composition which contains a high molecular weight polymer, is excellent in cohesive force and adhesive strength and can be prepared without using an organic solvent. The acrylic pressure-sensitive adhesive composition is produced by a process which comprises radical-polymerizing monomers containing an alkyl (meth)acrylate using carbon dioxide as a diluent to thereby prepare a pressure-sensitive adhesive composition containing an acrylic polymer having a weight average molecular weight of 400,000 or more. The polymerization pressure ranges from, for example, about 5.7 to 40 MPa, AND the polymerization temperature ranges from, for example, about 20 to 100° C.

    摘要翻译: 含有高分子量聚合物的丙烯酸类压敏粘合剂组合物的内聚力和粘合强度优异,可以在不使用有机溶剂的情况下制备。丙烯酸类压敏粘合剂组合物通过包括自由基聚合 使用二氧化碳作为稀释剂的含有(甲基)丙烯酸烷基酯的单体,由此制备含有重均分子量为40万以上的丙烯酸类聚合物的压敏粘合剂组合物。 聚合压力范围为例如约5.7〜40MPa,聚合温度为例如约20〜100℃。

    Method for producing foamed pressure-sensitive adhesive tape or sheet
    3.
    发明授权
    Method for producing foamed pressure-sensitive adhesive tape or sheet 有权
    生产泡沫压敏粘合带或片材的方法

    公开(公告)号:US06224938B1

    公开(公告)日:2001-05-01

    申请号:US09456910

    申请日:1999-12-07

    IPC分类号: B05D100

    CPC分类号: C09J7/385 Y02P20/544

    摘要: A method and apparatus for producing a foamed pressure-sensitive adhesive tape or sheet having a fine cell structure with a good production efficiency without through complicated steps are provided. The method comprises subjecting a mixture containing monomers of a polymer constituting a foamed pressure-sensitive adhesive layer to polymerization in an inert fluid in a supercritical state or a liquid state under pressure, and ejecting the polymerized composition obtained on a substrate under a pressure lower than the pressure in the polymerization to form a foamed pressure-sensitive adhesive layer applied on the substrate. The apparatus comprises a pressure vessel for polymerizing monomers of a polymer constituting a foamed pressure-sensitive adhesive layer under pressure, an inert fluid supplying means for supplying an inert fluid in a supercritical state or a liquid state to the pressure vessel, and an ejection means for ejecting the polymerized composition obtained by polymerizing the monomers.

    摘要翻译: 提供了一种不经过复杂步骤生产具有良好生产效率的细胞结构的泡沫压敏粘合带或片材的方法和装置。该方法包括使构成发泡压敏粘合剂的聚合物的混合物 在超临界状态或压力状态的惰性流体中进行聚合,并在低于聚合反应压力的压力下喷射在基材上得到的聚合组合物,形成施加在基材上的发泡压敏粘合剂层 该装置包括用于在压力下聚合构成发泡压敏粘合剂层的聚合物的单体的压力容器,用于将超临界状态或液态的惰性流体供应到压力容器的惰性流体供给装置,以及喷射 用于喷射通过聚合得到的聚合组合物的方法 单体。

    Porous article and process for producing porous article
    5.
    发明授权
    Porous article and process for producing porous article 有权
    多孔制品和多孔制品生产工艺

    公开(公告)号:US06387969B1

    公开(公告)日:2002-05-14

    申请号:US09655441

    申请日:2000-09-05

    IPC分类号: C08J926

    摘要: A porous article having excellent heat resistance, a finely cellular structure, and a low dielectric constant; and a process for producing the porous article which comprises subjecting a polymer composition having a micro-domain structure comprising a continuous polymer phase and dispersed therein a discontinuous phase having an average diameter smaller than 10 &mgr;m to a treatment for removing the ingredient constituting the discontinuous phase by at least one operation selected from vaporization and decomposition and by an extraction operation to thereby make the polymer porous. The ingredient constituting the discontinuous phase has a weight average molecular weight of, e.g., 10,000 or lower. Liquefied carbon dioxide, supercritical carbon dioxide, or the like can be used as an extraction solvent for the ingredient constituting the discontinuous phase.

    摘要翻译: 具有优异的耐热性,细孔结构和低介电常数的多孔制品; 以及一种制造多孔制品的方法,该方法包括使包含连续聚合物相的微结构结构的聚合物组合物分散在平均直径小于10μm的不连续相中,以除去构成不连续相的成分 通过选自蒸发和分解的至少一种操作和通过萃取操作,从而使聚合物多孔。 构成不连续相的成分的重均分子量例如为10,000以下。 可以使用液化二氧化碳,超临界二氧化碳等作为构成不连续相的成分的提取溶剂。

    Removable pressure-sensitive adhesive sheet
    9.
    发明授权
    Removable pressure-sensitive adhesive sheet 有权
    可拆卸压敏粘合片

    公开(公告)号:US06984413B2

    公开(公告)日:2006-01-10

    申请号:US09735892

    申请日:2000-12-14

    IPC分类号: C09J7/02

    摘要: A removable pressure-sensitive adhesive sheet is disclosed which, when used for fixing adherends thereto in work processing or the like, has such a degree of tackiness as not to peel off the adherends and which, after the work processing or the like, can be easily removed from the adherends without fouling them. The removable pressure-sensitive adhesive sheet comprises a pressure-sensitive adhesive layer constituted of a pressure-sensitive adhesive comprising a polymer in which the content of low-molecular components having a molecular weight of 105 or lower is 10% by weight or lower. The polymer constituting the pressure-sensitive adhesive may be an acrylic polymer obtained by polymerizing one or more monomers in liquid or supercritical carbon dioxide. The removable pressure-sensitive adhesive sheet can be used, e.g., as a pressure-sensitive adhesive sheet for semiconductor wafer processing.

    摘要翻译: 公开了一种可拆卸的压敏粘合片,其用于在工件加工等中将被粘物固定时具有这样的粘合度,不会剥离被粘物,并且在加工等之后,可以 容易从被粘物体上移除而不会污染它们。 可除去的粘合片包括由包含聚合物的压敏粘合剂构成的压敏粘合剂层,其中分子量为10以上的低分子量成分的含量为 10重量%以下。 构成压敏粘合剂的聚合物可以是通过在液体或超临界二氧化碳中聚合一种或多种单体获得的丙烯酸类聚合物。 可除去的压敏粘合片可以用作例如半导体晶片加工用的粘合片。

    Process for producing polymer foam and polymer foam
    10.
    发明申请
    Process for producing polymer foam and polymer foam 审中-公开
    生产聚合物泡沫和聚合物泡沫的方法

    公开(公告)号:US20050032924A1

    公开(公告)日:2005-02-10

    申请号:US10898326

    申请日:2004-07-26

    摘要: A process for producing a polymer foam, which comprises (I) a melting step of melting a thermoplastic resin composition by heating, (II) a gas feed step of quantitatively feeding an inert gas into the molten resin composition, (III) a kneading step of mixing and kneading the inert gas and the molten resin composition, (IV) a cooling step of cooling the kneaded material, and (V) a specific expansion step of expanding the cooled kneaded material.

    摘要翻译: 一种制造聚合物泡沫体的方法,其包括(I)通过加热熔化热塑性树脂组合物的熔融步骤,(II)将惰性气体定量供给到熔融树脂组合物中的气体进料步骤,(III)捏合步骤 混合和捏合惰性气体和熔融树脂组合物,(IV)冷却捏合材料的冷却步骤,和(V)膨胀冷却的捏合材料的比膨胀步骤。