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    • 4. 发明授权
    • Polychloroprene mixtures and the use thereof
    • 聚氯丁二烯混合物及其用途
    • US4485216A
    • 1984-11-27
    • US529389
    • 1983-09-06
    • Rudiger MuschWilhelm GobelWolfgang KonterEberhard Muller
    • Rudiger MuschWilhelm GobelWolfgang KonterEberhard Muller
    • C08L33/00C08L7/00C08L11/00C08L21/00C08L33/04C08L27/22
    • C08L11/00C08L2205/02
    • Solid polychloroprene mixtures consisting of sol and gel polymer, wherein the sol component consists of a copolymer of chloroprene and from 0.75 to 0.32% by weight of sulphur, based on the total quantity of unsaturated compounds of the sol polychloroprene, and the gel component consists of a copolymer of chloroprene, from 0.4 to 1.0% by weight of sulphur, based on the total quantity of unsaturated compounds of the gel polychloroprene and from 7.5.times.10.sup.-3 to 3.0.times.10.sup.-2 mols, based on 100 g of the total quantity of monomer of the gel polychloroprene, of a compound corresponding to the general formula ##STR1## wherein R.sub.1 and R.sub.2 each represents a hydrogen atom or C.sub.1 -C.sub.4 alkyl group, and X represents a C.sub.2 -C.sub.10 alkylene group,are suitable for the production by extrusion and by calandering of rubber articles which may be subjected to high strains.
    • 由溶胶和凝胶聚合物组成的固体聚氯丁二烯混合物,其中溶胶组分由氯丁二烯和0.75至0.32重量%硫的共聚物组成,基于溶胶聚氯丁二烯的不饱和化合物的总量,凝胶组分由 基于凝胶聚氯丁二烯的不饱和化合物的总量和基于100g单体总量的7.5×10 -3至3.0×10 -2摩尔的氯丁二烯共聚物,为0.4至1.0重量%的硫 的凝胶聚氯丁二烯,其通式为:其中R1和R2各自表示氢原子或C1-C4烷基,X代表C2-C10亚烷基,适用于通过挤出和 通过压缩可能经受高应变的橡胶制品。
    • 8. 发明授权
    • Polymerization of chloroprene
    • 氯丁二烯的聚合
    • US4786698A
    • 1988-11-22
    • US132975
    • 1987-12-15
    • Rudiger MuschEberhard MullerPeter WendlingWolfgang KonterGerhard Hohmann
    • Rudiger MuschEberhard MullerPeter WendlingWolfgang KonterGerhard Hohmann
    • C08F2/22C08F2/24C08F2/26C08F2/38C08F4/30C08F4/40C08F36/18
    • C08F36/18
    • Gel-free polychloroprene is obtained, at high monomer conversions, using a polymerization initiator comprising sodium dithionite or a mixture of sodium dithionite with formamidinesulphinic acid or with potassium peroxydisulphate or with formamidinesulphinic acid and potassium peroxodisulphate or with potassium peroxodisulphate and sodium anthraquinon-.beta.-sulphonate or with formamidinesulphinic acid and potassium peroxodisulphate and sodium anthraquinone-.beta.-sulphonate, and in the presence of oxygen and a chain transfer agent when 30 to 90% of the initiator is present at the commencement of polymerization and the remainder is added in portions during the polymerization, only further sodium dithionite being added at a conversion >60% in the case of an initiator combination, and when 20 to 80% by weight of the total amount of chain transfer agents is present before or at the commencement of polymerization and the remaining amount is added in one or more parts at monomer conversions of greater than 20%.
    • 使用包含连二亚硫酸钠或连二亚硫酸钠与甲酰胺亚磺酸钠或与过氧二硫酸钾或与甲脒亚磺酸和过氧二硫酸钾或与过氧二硫酸钾和蒽醌-β-磺酸钠的混合物的聚合引发剂,以高单体转化率获得无凝胶的聚氯丁二烯 或与甲酰胺亚磺酸和过二硫酸钾和蒽醌-β-磺酸钠反应,并且在氧和链转移剂存在下,当聚合开始时存在30至90%的引发剂,其余部分在 在引发剂组合的情况下,只有进一步的连二亚硫酸钠以60%的转化率加入,并且当在聚合开始之前或在聚合开始时存在20至80重量%的链转移剂的总量 在单体转化时,一个或多个部分加入量 大于20%。