Emulsifier for the preparation of polymers
    1.
    发明授权
    Emulsifier for the preparation of polymers 失效
    用于制备聚合物的乳化剂

    公开(公告)号:US4346203A

    公开(公告)日:1982-08-24

    申请号:US173567

    申请日:1980-07-30

    IPC分类号: C08F2/26

    CPC分类号: C08F2/26

    摘要: An emulsifier for the preparation of polymers comprising more than 50 percent by weight of an alkali metal salt of polysulphonic acid of alkane of medium chain length is disclosed. The emulsifier is useful in forming emulsions of polymers especially thermoplastic polymers and in particular polymers of vinyl chloride. It is useful in vinyl chloride polymerization and co-polymerization to form an emulsifier composition having improved transparent and antistatic properties. The polymer can be added before, during or after polymerization. When added after polymerization it provides improved properties to a calendered object obtained from the polymer.

    摘要翻译: 公开了一种用于制备聚合物的乳化剂,其包含超过50重量%的中链烷烃链烷烃的碱金属盐。 乳化剂可用于形成聚合物的乳液,特别是热塑性聚合物,特别是氯乙烯的聚合物。 在氯乙烯聚合和共聚中形成具有改善的透明和抗静电性能的乳化剂组合物是有用的。 聚合物可以在聚合之前,期间或之后加入。 聚合后加入时,可以提供从聚合物获得的压延物体的改进性能。

    Aqueous dispersions of plastics in which the average diameter of the
dispersion particles is in the range from about 50 to 500 nm, and a
process for their preparation
    2.
    发明授权
    Aqueous dispersions of plastics in which the average diameter of the dispersion particles is in the range from about 50 to 500 nm, and a process for their preparation 失效
    其中分散体颗粒的平均直径在约50至500nm范围内的塑料的水分散体及其制备方法

    公开(公告)号:US4327004A

    公开(公告)日:1982-04-27

    申请号:US173568

    申请日:1980-07-30

    IPC分类号: C08F2/00 C08F2/26 C08L27/06

    CPC分类号: C08F2/26

    摘要: An aqueous dispersion of a synthetic polymer of average diameter in the range of 50 to 500 nm and especially above 75 nm is disclosed, the aqueous dispersion having a solids content of 5 to 50 parts by weight per 100 parts per weight of total dispersion. The aqueous dispersion is provided by effecting polymerization in the presence of an emulsifier which comprises an alkali metal salt of a polysulfonic acid of an alkane of medium chain length e.g. 8 to 22 carbon atoms.

    摘要翻译: 公开了平均直径在50至500nm,特别是高于75nm范围内的合成聚合物的水性分散体,该水性分散体的固含量为每100重量份总分散体5至50重量份。 通过在乳化剂的存在下进行聚合来提供水分散体,所述乳化剂包含中链链烷烃的多磺酸的碱金属盐,例如, 8至22个碳原子。

    Process for the continuous, counter flow/direct flow extraction of
polyamides
    4.
    发明授权
    Process for the continuous, counter flow/direct flow extraction of polyamides 失效
    聚酰胺连续,逆流/直流萃取的工艺

    公开(公告)号:US4978743A

    公开(公告)日:1990-12-18

    申请号:US246361

    申请日:1988-09-19

    IPC分类号: C08G69/00 C08G69/28 C08G69/46

    CPC分类号: C08G69/46 C08G69/28

    摘要: This invention relates to a process for the continuous extraction of polyamides, in which the residue of low molecular weight components left in the polyamide is very small. It also relates to a two-part extraction tube suitable for this purpose, in which the upper part is connected to the lower part by a transition tube of smaller diameter and a counterflow extraction is carried out in the upper part and a direct flow extraction in the lower part under particular conditions.

    摘要翻译: 本发明涉及一种连续提取聚酰胺的方法,其中残留在聚酰胺中的低分子量组分的残留物非常小。 它还涉及一种适合于此目的的两部分提取管,其中上部通过较小直径的过渡管连接到下部,并且在上部进行逆流提取,并且直接流动提取 下部在特定条件下。

    Low shrink, free flowing polyester resin systems based on a mixture of a
crystalline unsaturated polyester resin, a monomeric copolymerizable
component and a cellulose ester
    6.
    发明授权
    Low shrink, free flowing polyester resin systems based on a mixture of a crystalline unsaturated polyester resin, a monomeric copolymerizable component and a cellulose ester 失效
    基于结晶不饱和聚酯树脂,单体可共聚组分和纤维素酯的混合物的低收缩,自由流动的聚酯树脂体系

    公开(公告)号:US3989655A

    公开(公告)日:1976-11-02

    申请号:US434012

    申请日:1974-01-17

    IPC分类号: C08L67/06 C08L1/14

    CPC分类号: C08L67/06

    摘要: A composition comprisingA. 24-70% by weight of an unsaturated crystalline polyester which is the condensation product of fumaric acid and a glycol of the formulaHO--CH.sub.2 --R--CH.sub.2 --OHwherein R is of the formula (CH.sub.2).sub.z wherein z is 1 to 18 or a symmetrical dialkyl derivative of (CH.sub.2).sub.z wherein the alkyl substituents are situated on the same carbon atom or cycloalkylene,B. 20-70% by weight of styrene andC. 1-30% by weight of at least one member selected from the group consisting of a polycarbonate, polyamide, polyvinyl alcohol, polyvinyl alcohol acetal, polyvinylchloride, cellulose ester of at least one organic acid and polyethylene. Said mixture may additionally contain one or more fibrous reinforcing agents and one or more fillers.

    摘要翻译: 一种组合物,其包含A-24-70%重量的不饱和结晶聚酯,其为FACC酸的缩合产物和式II-CH2-R-CH2-OH的甘氨酸,其中R为式(CH2)z,其中 z为1至18或(CH 2)z的对称二烷基衍生物,其中烷基取代基位于相同的碳原子或亚环烷基上,B 20-70%,苯乙烯重量百分比为1-30%,重量百分比 由聚碳酸酯,聚酰胺,聚乙烯醇,聚乙烯醇,聚乙烯吡咯烷酮,至少一种有机酸和聚乙烯的纤维素酯组成的组中选出的最少一个成员。 所述混合物可另外含有一种或多种纤维增强剂和一种或多种填料。