Process for producing block copolymer from conjugated diene and vinyl
aromatic
    11.
    发明授权
    Process for producing block copolymer from conjugated diene and vinyl aromatic 失效
    从共轭二烯和乙烯基芳族化合物制备嵌段共聚物的方法

    公开(公告)号:US4220738A

    公开(公告)日:1980-09-02

    申请号:US890942

    申请日:1978-03-28

    IPC分类号: C08F297/04 C08F293/00

    CPC分类号: C08F297/04

    摘要: By block-copolymerizing a mixture of an aromatic vinyl compound and a conjugated diene in two stages in an aliphatic hydrocarbon solvent, using an organomonolithium compound or an organodilithium compound as a polymerization initiator, a block copolymer is formed as a suspension polymer in a slurry state.The resulting block copolymer is very clear and excellent in mechanical properties, especially, strength, elongation and impact strength. It has a wide application in the field of general resins.

    摘要翻译: 通过使用有机锂化合物或有机锂化合物作为聚合引发剂,将芳香族乙烯基化合物和共轭二烯的混合物分两个阶段进行脂肪族烃溶剂的嵌段共聚,形成作为悬浮聚合物的淤浆状态的嵌段共聚物 。 所得嵌段共聚物的机械性能,特别是强度,伸长率和冲击强度非常透明和优异。 它在普通树脂领域有广泛的应用。

    Pressure-sensitive adhesive and vinyl acetate-ethylene copolymer
emulsion useful as base material therefor
    12.
    发明授权
    Pressure-sensitive adhesive and vinyl acetate-ethylene copolymer emulsion useful as base material therefor 失效
    压敏粘合剂和乙酸乙烯酯 - 乙烯共聚物乳液可用作其基材

    公开(公告)号:US4128518A

    公开(公告)日:1978-12-05

    申请号:US789293

    申请日:1977-04-20

    摘要: A pressure-sensitive adhesive containing a base material therefore comprising an aqueous emulsion of vinyl acetate-ethylene copolymer having an ethylene content of 15 to 40% by weight, preferably 20 to 35% by weight, the benzene-insoluble part of less than 30% by weight, preferably less than 20% by weight, and an intrinsic viscosity of the benzene-soluble part of 0.4 to 1.4 dl/g, preferably 0.6 to 1.0 dl/g, (at 30.degree. C) which is prepared by the emulsion copolymerization of vinyl acetate and ethylene and optionally at least one unsaturated monovinyl monomer in the presence of a protective colloid and a polyoxyethylenic nonionic sulfactant, or a base material comprising a blend of said aqueous emulsion of vinyl acetate-ethylene copolymer as set forth above and an emulsion of an acrylic ester copolymer; and the aqueous emulsion of vinyl acetate-ethylene copolymer useful as the base material for the pressure-sensitive adhesive.

    摘要翻译: 因此,含有基材的压敏粘合剂包括乙烯含量为15〜40重量%,优选为20〜35重量%的乙酸乙烯酯 - 乙烯共聚物的水性乳液,不溶于苯的部分为30% ,优选小于20重量%,苯可溶部分的特性粘度为0.4〜1.4dl / g,优选为0.6〜1.0dl / g(30℃),其通过乳液共聚制备 的乙酸乙烯酯和乙烯和任选的至少一种不饱和单乙烯基单体在保护胶体和聚氧乙烯非离子表面活性剂的存在下,或包含上述乙酸乙烯酯 - 乙烯共聚物的水乳液和乳液的共混物的基材 的丙烯酸酯共聚物; 以及可用作压敏粘合剂基材的乙酸乙烯酯 - 乙烯共聚物的水性乳液。

    Method for producing transparent block copolymer resin
    13.
    发明授权
    Method for producing transparent block copolymer resin 失效
    透明嵌段共聚物树脂的制造方法

    公开(公告)号:US4122134A

    公开(公告)日:1978-10-24

    申请号:US827079

    申请日:1977-08-23

    IPC分类号: C08F297/04

    CPC分类号: C08F297/04

    摘要: By block-copolymerizing a vinyl aromatic compound and a conjugated diene in a hydrocarbon solvent with an organolithium compound as initiator, there is obtained a block copolymer which comprises in the molecule three blocks of homopolymerized vinyl aromatic compound, randomly copolymerized vinyl aromatic compound and conjugated diene, and homopolymerized diene, respectively. The resulting block copolymer is transparent and excellent in mechanical properties, and is suitable for use in the manufacture of sheeting, film, and various molded articles.

    摘要翻译: 通过在有机锂化合物作为引发剂的烃溶剂中使乙烯基芳族化合物和共轭二烯嵌段共聚合得到嵌段共聚物,该共聚物在该分子中包含三个均聚乙烯基芳族化合物的嵌段,无规共聚的乙烯基芳族化合物和共轭二烯 ,和均聚二烯。 所得的嵌段共聚物是透明的,机械性能优异,适用于片材,薄膜和各种模塑制品的制造。