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    • 71. 发明授权
    • Rubber compositions with a high elastic modulus
    • 具有高弹性模量的橡胶组合物
    • US5196483A
    • 1993-03-23
    • US549322
    • 1990-07-06
    • Daniel ZimmermanJohn MilksSidney BinderRoger J. CardWinfried WunderlichWerner Siol
    • Daniel ZimmermanJohn MilksSidney BinderRoger J. CardWinfried WunderlichWerner Siol
    • C08F255/06C08F291/02
    • C08F291/02C08F255/06
    • Modified rubber compositions comprise by weight about 15-60% of a highly saturated aliphatic rubber such as ethylene-propylene-diene rubber, about 25-80% of acrylate monomer units; and less than about 5% multi-functional monomer units. The compositions exist as amorphous heterogeneously dispersed phases. The first phase comprises the copolymer rubber to which polymers of at least 10% of the other monomer units are grafted. The second phase comprises the other monomers polymerized as homo and copolymers, not grafted to the rubber. Optionally, up to 20% of the composition comprises high index monomer units. The high index monomer units may be copolymerized with the acrylate and grafted to the rubber. Greater than 10% of the monomer units other than rubber are grafted to the rubber. The number average molecular weight of the grafts is between 10,000 and 80,000 daltons. About 2-20% by weight of one or more polymers may be provided to adjust the refractive indices of the rubber or the polyacrylate phase in the final product such that when the composition is present at the 10% rubber level, the haze can be reduced to less than 20%.
    • 改性橡胶组合物包含约15-60%的高饱和脂肪族橡胶如乙烯 - 丙烯 - 二烯橡胶,约25-80%的丙烯酸酯单体单元; 和小于约5%的多官能单体单元。 组合物以无定形非均相分散相存在。 第一相包含其中至少10%的其它单体单元的聚合物被接枝的共聚物橡胶。 第二相包含其它单体作为均聚物和共聚物聚合而未接枝到橡胶上。 任选地,高达20%的组合物包含高折射率单体单元。 高指数单体单元可以与丙烯酸酯共聚并接枝到橡胶上。 大于10%的橡胶以外的单体单元被接枝到橡胶上。 移植物的数均分子量为10,000至80,000道尔顿。 可以提供约2-20重量%的一种或多种聚合物以调节最终产品中橡胶或聚丙烯酸酯相的折射率,使得当组合物以10%橡胶水平存在时,雾度可以降低 至少于20%。
    • 80. 发明授权
    • Method for the production of branched polymerizates
    • 生产支化聚合物的方法
    • US5859140A
    • 1999-01-12
    • US877640
    • 1997-06-17
    • Martina PfirmannWerner SiolKlaus KoralewskiMichael Wicker
    • Martina PfirmannWerner SiolKlaus KoralewskiMichael Wicker
    • C08F2/06C08F2/38C08F265/06C09D7/12C09J11/08C10M145/14C10M149/06C08F273/00
    • C09J11/08C08F265/06C09D7/125C10M145/14C10M149/06C10M2209/084C10M2217/024C10M2217/06C10N2240/10C10N2240/101C10N2240/104C10N2240/106
    • A method for producing branched polymerizates by radical polymerization of monomers in two stages comprisingin a first stage, adding 10 to 500 parts by weight of at least one monomer M.sub.1 and 0.1 to 20 parts by weight of a mercaptan with an olefinic, radically polymerizable double bond RM as a molecular weight regulator, and polymerizing said at least one monomer M.sub.1 and mercaptan RM to form a copolymer MM.sub.1 in the presence of at least one polymerization initiator and 0 to 100 parts by weight of an inert, non-aqueous solvent, which completely dissolves the monomer M.sub.1, the mercaptan RM and the copolymer MM.sub.1, where the polymerizable double bonds and M.sub.1 and RM have a reactivity, expressed by a copolymerization parameter r, between 0.1 and 10, andin a second stage, adding 10 to 2000 parts by weight of a monomer M.sub.2 and 0.01 to 10 parts by weight of a saturated molecular weight regulator, and optionally, an inert, non-aqueous solvent, to the reaction mixture formed in the first stage, and polymerizing in the presence of at least one polymerization initiator to form a branched polymerizate. Branched polymerzates made by the method.
    • 通过两步单体的自由基聚合制备支化聚合物的方法,包括在第一阶段中,加入10至500重量份的至少一种单体M1和0.1至20重量份的具有烯属可自由基聚合双酚的硫醇 键RM作为分子量调节剂,并且在至少一种聚合引发剂和0至100重量份的惰性非水溶剂的存在下,聚合所述至少一种单体M1和硫醇RM以形成共聚物MM1,其中 完全溶解单体M1,硫醇RM和共聚物MM1,其中可聚合双键和M1和RM具有由共聚参数r表示的反应性,为0.1至10,在第二阶段中,加入10至2000份 的单体M2和0.01至10重量份的饱和分子量调节剂和任选的惰性非水溶剂加入到第一阶段中形成的反应混合物中,和聚 在存在至少一种聚合引发剂的情况下化合以形成支化聚合物。 通过该方法制备的支化聚合物。