Chlorination of polyolefins in the presence of complex formers
    3.
    发明授权
    Chlorination of polyolefins in the presence of complex formers 失效
    在复合成型剂存在下氯化聚烯烃

    公开(公告)号:US4165431A

    公开(公告)日:1979-08-21

    申请号:US881675

    申请日:1978-02-27

    IPC分类号: C08F8/00 C08F8/20 C08F8/22

    CPC分类号: C08F8/22

    摘要: A chlorinated colorless polyolefin, preferably a chlorinated colorless isotactic polypropylene, soluble in carbon tetrachloride and having a chlorine content of from 60% to 70% by weight and an average degree of polymerization of from 2000 to 6000, produced by chlorinating polyolefins having a degree of polymerization of from 2000 to 20,000 in suspension or solution or in suspension and solution at 40 to 60.degree. C. in the presence of a halogen transfer agent, a chlorination catalyst and from 0.2 to 0.5% by weight, based on polyolefin, of at least one compound corresponding to the general Formula (I):h.sub.2 n--r--nh>.sub.n H (I)in which R represents the ethylene, propylene or butylene group and n=1-6.

    摘要翻译: 氯化无色聚烯烃,优选氯化无色全同立构聚丙烯,其可溶于四氯化碳,氯含量为60〜70重量%,平均聚合度为2000〜6000,通过氯化具有一定程度的聚烯烃 在卤素转移剂,氯化催化剂和基于聚烯烃的0.2至0.5重量%的存在下,在悬浮液或溶液中或悬浮液和溶液中在40至60℃下聚合2000至20,000,至少 对应于通式(I)的一种化合物:

    Preparation of polyarylene sulphides with ketone or pinacone
    9.
    发明授权
    Preparation of polyarylene sulphides with ketone or pinacone 失效
    用酮或苦味酸制备聚亚芳基硫醚

    公开(公告)号:US4921935A

    公开(公告)日:1990-05-01

    申请号:US266502

    申请日:1988-11-03

    IPC分类号: C08G75/14 C08G75/025

    CPC分类号: C08G75/025

    摘要: This invention relates to a process for the preparation of polyarylene sulphides, preferably polyphenylene sulphide (PPS), whose fusion viscosities can be adjusted to specified values, from alkali metal sulphides and polyhalogenated aromatic compounds in a polar solvent in the presence of a ketone or pinacone. The resulting polyarylene sulphides which have specified fusion viscosities are distinguished by high stability of the melt and low chlorine content. They cause little corrosion in the reaction vessels used for their preparation.

    摘要翻译: 本发明涉及一种制备聚亚芳基硫醚,优选聚苯硫醚(PPS)的方法,该聚亚芳基硫醚(PPS)的熔融粘度可以由酮或酮酮存在下在极性溶剂中由碱金属硫化物和多卤代芳族化合物调节至规定值 。 所得到的具有特定熔融粘度的聚亚芳基硫化物的特征在于熔体的高稳定性和低氯含量。 它们在用于制备的反应容器中几乎没有腐蚀。