Polymer mixtures of high ageing resistance
    22.
    发明授权
    Polymer mixtures of high ageing resistance 失效
    高耐老化聚合物混合物

    公开(公告)号:US5272205A

    公开(公告)日:1993-12-21

    申请号:US435056

    申请日:1989-11-13

    CPC分类号: C08L51/04 C08L51/085

    摘要: Molding compounds of(A) 5 to 95% by weight of a graft product of a mixture of 50 to 100 parts by weight styrene, .alpha.-methyl styrene, vinyl toluene, methyl methacrylate or mixtures thereof and 0 to 50 parts by weight acrylonitrile on a particulate silicone rubber with a mean particle diameter (d.sub.50) of from 0.10 to 0.50 .mu.m having a total rubber content of from 30 to 90% by weight and(B) 95 to 5% by weight of a graft product of a mixture of 50 to 100 parts by weight styrene, .alpha.-methyl styrene, vinyl toluene, methyl methacrylate or mixtures thereof and 0 to 50 parts by weight acrylonitrile on a particulate acrylate rubber with a mean particle diameter (d.sub.50) of from 0.05 to 1.00 .mu.m having a total rubber content of 30 to 80% by weight.

    摘要翻译: (A)5至95重量%的50至100重量份苯乙烯,α-甲基苯乙烯,乙烯基甲苯,甲基丙烯酸甲酯或其混合物和0至50重量份丙烯腈的混合物的接枝产物的成型化合物 平均粒径(d50)为0.10〜0.50μm,总橡胶含量为30〜90重量%的颗粒状硅橡胶,(B)95〜5重量%的 50至100重量份的苯乙烯,α-甲基苯乙烯,乙烯基甲苯,甲基丙烯酸甲酯或其混合物,以及0至50重量份的丙烯腈在平均粒径(d50)为0.05至1.00微米的丙烯酸甲酯橡胶上具有 总橡胶含量为30〜80重量%。

    Block copolymers containing polysiloxane segments
    25.
    发明授权
    Block copolymers containing polysiloxane segments 失效
    含有聚硅氧烷链段的嵌段共聚物

    公开(公告)号:US4968750A

    公开(公告)日:1990-11-06

    申请号:US427935

    申请日:1989-10-25

    IPC分类号: C08G77/442

    CPC分类号: C08G77/442

    摘要: Block copolymers composed of recurrent structural units belonging to the series comprising polysiloxanes and recurring structural units belonging to the series comprising homopolymers, copolymers or terpolymers of vinyl-aromatic compounds and acrylic monomers of mixtures thereof.

    摘要翻译: 由属于包含聚硅氧烷的系列的复发结构单元和属于该系列的重复结构单元组成的嵌段共聚物包括乙烯基芳族化合物的均聚物,共聚物或三元共聚物和其混合物的丙烯酸单体。

    Determining the reaction progress of graft polymerization reactions
    30.
    发明授权
    Determining the reaction progress of graft polymerization reactions 失效
    确定接枝聚合反应的反应进程

    公开(公告)号:US07122379B2

    公开(公告)日:2006-10-17

    申请号:US10281597

    申请日:2002-10-28

    IPC分类号: G01N24/00 G01N33/44

    摘要: A method of using Raman Spectra for determining the progress of a graft polymerization reaction is disclosed. The method entails (a) measuring at the beginning of the reaction and at a plurality of time intervals in the course of the reaction, continuously and on-site, the Raman spectrum in the wave number range of 100 to 4000 cm−1 of one or more of the monomers and/or polymers entailed in the reaction and of at least one internal standard and (b) recording the spectra and (c) adding reaction partners necessary to the reaction continuously and/or discontinuously and (d) calculating the change in concentration of the monomers and polymers by comparing the spectra of the monomers or polymers with the internal standard.

    摘要翻译: 公开了一种使用拉曼光谱测定接枝聚合反应进程的方法。 该方法需要(a)在反应开始时和在反应过程中以多​​个时间间隔连续和现场测量波数范围为100至4000cm -1的拉曼光谱, 反应中所含的一种或多种单体和/或聚合物中的1种和至少一种内标,和(b)记录光谱,和(c)连续和/或不连续地加入反应所需的反应伴侣 和(d)通过将单体或聚合物的光谱与内标进行比较来计算单体和聚合物的浓度变化。