Modified Lewis acid catalyzed polymerization
    23.
    发明授权
    Modified Lewis acid catalyzed polymerization 失效
    改性路易斯酸催化聚合

    公开(公告)号:US4780513A

    公开(公告)日:1988-10-25

    申请号:US889682

    申请日:1986-07-24

    CPC分类号: C08F10/00

    摘要: Protection against molecular weight depression in the polymerization reaction producing polyisobutylene rubber or butyl rubber is achieved through addition of minor amounts of certain metal alkyls, particularly the lower alkyl aluminum compounds or lower alkyl aluminum hydrides which function as buffering, neutralizing or complexing agents against polymerization poisons and extraneous catalyst activators.

    摘要翻译: 在产生聚异丁烯橡胶或丁基橡胶的聚合反应中通过加入少量某些金属烷基,特别是低级烷基铝化合物或用作聚合毒物的缓冲,中和或络合剂的低级烷基氢化铝来实现抗分子量抑制的保护 和外来催化剂活化剂。

    Halomethylated aromatic interpolymers
    25.
    发明授权
    Halomethylated aromatic interpolymers 失效
    卤甲基芳族互聚物

    公开(公告)号:US4074035A

    公开(公告)日:1978-02-14

    申请号:US570352

    申请日:1975-04-22

    摘要: A continuous process for the preparation of gel-free interpolymers from monomers comprising one or more halomethylated vinyl aromatic compounds and one or more Type III monoolefins is characterized by the use of a solvent or mixture of solvents in which the reactants and the interpolymers are soluble; a soluble Lewis acid or Friedel-Crafts catalyst, especially an organo-Group IIIa element halide catalyst; a reaction temperature in the range of -120.degree. C to -20.degree. C; and a conversion of at least one of the monomers to interpolymer in excess of 85 percent. The interpolymers may be crosslinked with nucleophilic reagents to produce elastomeric compositions; quaternized with nitrogen, sulfur or phosphorous compounds to give self-emulsifying latices useful as surface coatings or converted to sulfonic or carboxylic derivatives for the preparation of ionomer resins. The interpolymers are also versatile intermediates which enable the preparation by simple substitution reactions of a wide range of functional-group containing elastomers especially useful in adhesive applications, and as flexibilizers for brittle functional-group containing plastics such as epoxies and amino resins.

    摘要翻译: 用于从包含一种或多种卤代甲基化乙烯基芳族化合物和一种或多种III型单烯烃的单体制备无凝聚互聚物的连续方法的特征在于使用溶剂或溶剂混合物,其中反应物和互聚物可溶于其中; 可溶性路易斯酸或Friedel-Crafts催化剂,特别是有机IIIa族元素卤化物催化剂; 反应温度在-120℃至-20℃的范围内; 以及至少一种单体与互聚物的转化率超过85%。 互聚物可以与亲核试剂交联以产生弹性体组合物; 用氮,硫或磷化合物季铵化,得到可用作表面涂层的自乳化胶乳,或转化成用于制备离聚物树脂的磺酸或羧酸衍生物。 互聚物也是通用的中间体,其能够通过在粘合剂应用中特别有用的宽范围的含官能团的弹性体的简单的取代反应以及用于含有脆性官能团的塑料如环氧树脂和氨基树脂的柔性剂来制备。