Rubber dispersions II
    11.
    发明授权
    Rubber dispersions II 失效
    橡胶分散体II

    公开(公告)号:US4454305A

    公开(公告)日:1984-06-12

    申请号:US399712

    申请日:1982-07-19

    摘要: Stable, free-flowing dispersions in organic liquids of rubbers in the form of discrete particles having an average diameter of from 100 to 3000 nm which contains:A--as rubber, from 1 to 20% by weight, based on the total dispersion, of a crosslinked diene rubber; B--from 0 to 20% by weight, based on the total dispersion, of water in the form of a water-in-oil emulsion; C--as the continuous organic phase, from 99 to 66% by weight, based on the total dispersion, of (a) C.sub.1 -C.sub.10 alkyl acrylates or alkyl methacrylates, methyl methacrylate, ethyl acrylate or n-hexyl acrylate; or (b) a mixture of from 85 to 50% by weight of styrene or .alpha.-methyl styrene and from 15 to 50% by weight of acrylonitrile, methacrylonitrile or C.sub.1 -C.sub.6 alkyl acrylates or alkyl methacrylates, methyl methacrylate, ethyl acrylate, n-hexyl acrylate; or (c) a mixture of from 85 to 50% by weight of a C.sub.1 -C.sub.10 alkyl acrylate or alkyl methacrylate and from 15 to 50% by weight of acrylonitrile, methacrylonitrile or styrene; up to 60% by weight of a liquid hydrocarbon can be added to and mixed with (a), (b) and (c),and a process for producing said dispersions.

    摘要翻译: 平均直径为100至3000nm的离散颗粒形式的橡胶有机液体中的稳定的自由流动的分散体,其包含:A-橡胶,基于总分散体积的1至20重量% 交联二烯橡胶; B为0至20重量%,基于总分散体积为油包水乳液形式的水; (a)丙烯酸C1-C10烷基酯或甲基丙烯酸烷基酯,甲基丙烯酸甲酯,丙烯酸乙酯或丙烯酸正己酯的总分散体的99至66重量% 或(b)85至50重量%的苯乙烯或α-甲基苯乙烯和15至50重量%的丙烯腈,甲基丙烯腈或丙烯酸C 1 -C 6烷基酯或甲基丙烯酸烷基酯的混合物,甲基丙烯酸甲酯,丙烯酸乙酯, 丙烯酸己酯 或(c)85至50重量%的丙烯酸C1-C10烷基酯或甲基丙烯酸烷基酯和15至50重量%的丙烯腈,甲基丙烯腈或苯乙烯的混合物; 可以向(a),(b)和(c)中加入高达60重量%的液体烃,并与(a),(b)和(c)混合,以及制备所述分散体的方法。

    Mixtures of thermoplastic polymers in powder form
    12.
    发明授权
    Mixtures of thermoplastic polymers in powder form 失效
    粉末形式的热塑性聚合物的混合物

    公开(公告)号:US5112910A

    公开(公告)日:1992-05-12

    申请号:US743678

    申请日:1991-08-12

    摘要: Process for the preparation of mixtures of thermoplastic polymers in powder form from aqueous emulsions ofa) particulate, partly crosslinked rubber-like copolymers of a C.sub.2 -C.sub.8 -alkyl acrylate and/or butadiene with (based on the copolymer) up to 40 wt. % acrylonitrile, styrene or C.sub.1 -C.sub.4 -alkyl methacrylate,b) a thermoplastic resin, and if appropriatec) a rubber-rich graft polymer of styrene, .alpha.-methylstyrene, acrylonitrile, methyl methacrylate and/or alkyl acrylate on a diene or alkyl acrylate rubber having a rubber content of 50 to 95 wt. %,wherein aqueous emulsions of a) and b) and if appropriate c) having polymer contents of 15 to 50 wt. % are mixed with a coagulate solution simultaneously, but in separate streams, continuously or semi-continuously at 20.degree. to 100.degree. C., the polymers a) and b) and if appropriate c) being coagulated, the streams are combined and the polymer mixture is then separated off.

    摘要翻译: 制备粉末形式的热塑性聚合物的混合物的方法,该方法由以下混合物的水性乳液制备:a)丙烯酸C 2 -C 8烷基酯和/或丁二烯与(基于共聚物)的至少40重量%的颗粒部分交联的橡胶状共聚物。 丙烯腈,苯乙烯或甲基丙烯酸C 1 -C 4烷基酯,b)热塑性树脂,如果合适,c)在二烯或烷基上的苯乙烯,α-甲基苯乙烯,丙烯腈,甲基丙烯酸甲酯和/或丙烯酸烷基酯的富含橡胶的接枝聚合物 丙烯酸酯橡胶,其橡胶含量为50〜95重量% %,其中a)和b)和如果合适的水性乳液c)具有15至50重量%的聚合物含量。 %与凝固溶液同时混合,但在单独的流中,在20℃至100℃连续或半连续,聚合物a)和b),如果合适,c)凝结,将流合并,聚合物 混合物然后分离出来。

    Block copolymers containing polysiloxane segments
    14.
    发明授权
    Block copolymers containing polysiloxane segments 失效
    含有聚硅氧烷链段的嵌段共聚物

    公开(公告)号:US4968750A

    公开(公告)日:1990-11-06

    申请号:US427935

    申请日:1989-10-25

    IPC分类号: C08G77/442

    CPC分类号: C08G77/442

    摘要: Block copolymers composed of recurrent structural units belonging to the series comprising polysiloxanes and recurring structural units belonging to the series comprising homopolymers, copolymers or terpolymers of vinyl-aromatic compounds and acrylic monomers of mixtures thereof.

    摘要翻译: 由属于包含聚硅氧烷的系列的复发结构单元和属于该系列的重复结构单元组成的嵌段共聚物包括乙烯基芳族化合物的均聚物,共聚物或三元共聚物和其混合物的丙烯酸单体。

    Thermoplastic compositions in powder form
    18.
    发明授权
    Thermoplastic compositions in powder form 失效
    粉末形式的热塑性组合物

    公开(公告)号:US4522959A

    公开(公告)日:1985-06-11

    申请号:US594284

    申请日:1984-03-28

    摘要: A process for the production of a pulverulent mixture consisting of(A) from 60 to 99 parts by weight of a brittle copolymer consisting of acrylonitrile and styrene, .alpha.-methylstyrene, methyl methacrylate or mixtures thereof, and(B) from 1 to 40 parts by weight of a flexible rubber-elastic polymer,by coagulating, in a first stage, a latex of (A) or a mixture of a latex of (A) and a part of a latex of (B), adding, in a second stage, the latex of (B) or the remaining part of the latex of (B), so that the desired quantity ratio of (A) to (B) is attained, and, in a third stage, separating the precipitated mixture of (A) and (B) from the aqueous phase, and drying it.

    摘要翻译: 一种由(A)60至99重量份由丙烯腈和苯乙烯组成的脆性共聚物,α-甲基苯乙烯,甲基丙烯酸甲酯或其混合物的粉末混合物的制备方法,(B)1至40份 (A)的胶乳或(A)的胶乳与(B)的一部分胶乳的混合物在第一阶段中凝固,在第二阶段中, (B)的胶乳或(B)的胶乳的剩余部分,从而达到(A)〜(B)的所需量比,在第三阶段,将沉淀的( A)和(B)从水相中干燥。

    Rubber powders
    19.
    发明授权
    Rubber powders 失效
    橡胶粉

    公开(公告)号:US4421901A

    公开(公告)日:1983-12-20

    申请号:US337010

    申请日:1982-01-04

    CPC分类号: C08F285/00 Y10S525/902

    摘要: Pourable rubber powders comprising particles having an average diameter of from 0.01 to 10 mm which contain, polymerized thereon, a shell of the polymer or copolymer of one or more vinyl monomers in a quantity of from 2 to 20% by weight, based on the rubber, and the core rubber is a latex polymer, the latex particles of which are composed of a core polymer and a sheath polymer, the core and sheath differing in their chemical composition and at least the sheath polymer being a diene or acrylate rubber having glass transition temperatures of below 0.degree. C., and a process for the preparation of such rubber powders, wherein a latex of an approximate rubber is completely broken with the formation of an aqueous suspension of the rubber; from 2 to 20% by weight, based on the rubber, of one or more vinyl monomers which form polymers having glass transition temperatures of above 25.degree. C. are then introduced into the suspension; and the monomer(s) is/are polymerized, optionally after adding a radical-forming catalyst.

    摘要翻译: 包含平均直径为0.01至10mm的颗粒的可浇注橡胶粉末,其含有基于橡胶的2-20重量%的聚合物或一种或多种乙烯基单体的共聚物的聚合物的壳 ,核心橡胶是胶乳聚合物,其胶乳颗粒由芯聚合物和鞘聚合物组成,芯和鞘的化学组成不同,并且至少鞘聚合物是具有玻璃化转变的二烯或丙烯酸酯橡胶 温度低于0℃,以及制备这种橡胶粉末的方法,其中近似橡胶的胶乳完全破碎,形成橡胶的水性悬浮液; 然后将2至20重量%的基于橡胶的一种或多种形成玻璃化转变温度高于25℃的聚合物的乙烯基单体引入悬浮液中; 并且任选地在添加自由基形成催化剂之后使单体聚合。