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    Process for the polymerization of vinyl chloride in an aqueous phase
    2.
    发明授权
    Process for the polymerization of vinyl chloride in an aqueous phase 失效
    在水相中聚合氯乙烯的方法

    公开(公告)号：US4330653A

    公开(公告)日：1982-05-18

    申请号：US228137

    申请日：1981-01-26

    申请人： Heinz Klippert ,  Dieter Ulmschneider

    发明人： Heinz Klippert ,  Dieter Ulmschneider

    IPC分类号： C08F2/20 ,  C08F14/06 ,  C08F291/00

    CPC分类号： C08F14/06 ,  C08F291/00

    摘要： A process for the polymerization of vinyl chloride in an aqueous phase in the presence of oil-soluble free-radical initiators and a mixture of at least two high-molecular, surface-active suspending agents is described. This mixture is composed of 10 to 90% by weight (relative to the mixture) of at least one copolymer formed from vinyl acetate and a compound of the formulaR.sub.1 --CO--NR.sub.2 --CH.dbd.CH.sub.2wherein R.sub.1 is H or alkyl having 1 to 4 C atoms and R.sub.2 is H or methyl, and of 90 to 10% by weight (relative to the mixture) of at least one cellulose ether or a partially acetylated polyvinyl alcohol. Homopolymers, copolymers or graft copolymers of vinyl chloride which have an improved combination of properties are obtained.

    摘要翻译： 描述了在油溶性自由基引发剂和至少两种高分子表面活性悬浮剂的混合物存在下在水相中聚合氯乙烯的方法。 该混合物由10至90重量％（相对于混合物）的至少一种由乙酸乙烯酯和式R 1 -CO-NR 2 -CH = CH 2的化合物形成的共聚物组成，其中R 1为H或具有1至 4个C原子，R 2为H或甲基，和90至10重量％（相对于混合物）的至少一种纤维素醚或部分乙酰化聚乙烯醇。 获得具有改进的性能组合的氯乙烯的均聚物，共聚物或接枝共聚物。

    Aqueous clay base mud for deep drilling
    3.
    发明授权
    Aqueous clay base mud for deep drilling 失效
    用于深层钻井的水性粘土泥浆

    公开(公告)号：US4048077A

    公开(公告)日：1977-09-13

    申请号：US611616

    申请日：1975-09-09

    申请人： Friedrich Engelhardt ,  Martin Hille ,  Dieter Ulmschneider

    发明人： Friedrich Engelhardt ,  Martin Hille ,  Dieter Ulmschneider

    IPC分类号： C09K8/04 ,  C08F20/42 ,  C08F20/52 ,  C08F26/00 ,  C08F28/00 ,  C08F220/10 ,  C08F220/14 ,  C08F220/44 ,  C08F220/56 ,  C08F226/02 ,  C08F228/02 ,  C09K8/24 ,  E21B21/00 ,  C09K7/02

    CPC分类号： C09K8/24

    摘要： An aqueous clay base mud for deep drilling containing as a protective colloid a copolymer which is constituted by the formula I, II and III ##STR1## IN WHICH R.sub.1 and R.sub.2 each is hydrogen of --CH.sub.3 ; R.sub.3 is --CO--NH.sub.2, --CN or COOCH.sub.3 ; R.sub.4 is hydrogen, --CH.sub.3 or --C.sub.2 H.sub.5 ; R.sub.5 is --CH.sub.3 or --C.sub.2 H.sub.5 or R.sub.4 and R.sub.5 together represent a propylene group forming a pyrrolidone radical with the inclusion of the radical ##STR2## Me is ammonium, potassium, sodium or lithium and x is 5 to 50, y 25 to 92 and z 3 to 70,Or by the saponification products thereof and which contains the components in the parts by weight of the starting monomers indicated by the indices x, y and z.

    摘要翻译： 一种用于深钻孔的含水粘土基泥浆，其含有作为保护胶体的共聚物，其由式I，II和III I，其中R 1和R 2各自为 - CH3; R3为-CO-NH2，-CN或COOCH3; R4是氢，-CH3或-C2H5; R 5是-CH 3或-C 2 H 5或R 4和R 5一起代表形成吡咯烷酮基团的丙烯基，其中包括自由基Me是铵，钾，钠或锂，x是5至50，y 25至92和 z 3至70，或由其指示产品，其中包含由指标X，Y和Z指示的起始单位重量的零件中的组分。