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公开(公告)号：US4427832A
公开(公告)日：1984-01-24
申请号：US284163
申请日：1981-07-17
申请人： Norio Yagi , Hisashi Chiba , Yutaka Mitsuda , Yasuaki Sakano , Masaki Aikawa
发明人： Norio Yagi , Hisashi Chiba , Yutaka Mitsuda , Yasuaki Sakano , Masaki Aikawa
IPC分类号： C08F2/22 , C08F212/10 , C08F212/12 , C08L25/12 , C08L27/06 , C08L33/20 , C08L51/06 , C08L55/02 , C08F212/06
CPC分类号： C08L25/12 , C08F212/10 , C08F212/12 , C08L33/20 , C08L27/06 , C08L51/06 , C08L55/02
摘要： In the emulsion polymerization of a monomer mixture comprising an aromatic vinyl compound, a vinyl cyanide compound and if desired, other vinyl compounds copolymerizable therewith in an aqueous medium, the vinyl cyanide compound is further added to the polymerization system in a controlled velocity during the substantial period of polymerization from the initial stage. When the copolymer thus obtained is incorporated into, for example, an acrylonitrile-butadiene-styrene terpolymer composition, thermoplastic resin compositions not coloring upon molding are obtained with a good impact resistance and heat resistance.
摘要翻译： 在包含芳香族乙烯基化合物，乙烯基氰化合物和如果需要的情况下，在水性介质中可与其共聚的其它乙烯基化合物的单体混合物的乳液聚合中，乙烯基氰化合物在控制速度下进一步加入到聚合体系中 从初始阶段的聚合时间。 当由此获得的共聚物结合到例如丙烯腈 - 丁二烯 - 苯乙烯三元共聚物组合物中时，获得在成型时不着色的热塑性树脂组合物，具有良好的耐冲击性和耐热性。
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2.发明授权Process for curing liquid chloroprene polymer containing xanthate active terminal groups using polyfunctional amines 失效使用多官能胺固化含有黄原酸酯活性端基的液态氯丁二烯聚合物的方法
公开(公告)号：US4054731A
公开(公告)日：1977-10-18
申请号：US596783
申请日：1975-07-17
摘要： A process for preparing a chloroprene-based liquid polymer having active terminal groups substantially at the terminals thereof comprising polymerizing chloroprene alone or in combination with one or more monomers copolymerizable with chloroprene in (1) an organic solvent having a boiling point of about 160.degree. C or less at atmospheric pressure and selected from the group consisting of aromatic hydrocarbons, aliphatic halogenated hydrocarbons and cyclic ethers, or (2) in carbon disulfide, which is present in an amount of about 20 to 200 parts by weight per 100 parts by weight of the total monomer, in the presence of a xanthogen disulfide compound represented by the formula: ##STR1## wherein R can contain from 1 to 12 carbon atoms and is an alkyl group, an aryl group, an aralkyl group or a cycloaliphatic group, which is present in an amount substantially equal to a ratio of about 2.5 to 20 parts by weight of diethyl xanthogen disulfide per 100 parts by weight of the total monomer. The chloroprene-based liquid polymer is purified by contacting the polymer or the polymer containing solution with an alcohol represented by the formula:R.sub.1 OHwherein R.sub.1 is an alkyl group containing 1 to 5 carbon atoms, to remove any unreacted xanthogen disulfide compound.
摘要翻译： 一种制备基本上在其末端具有活性末端基的氯丁二烯基液体聚合物的方法，包括在（1）沸点为约160℃的有机溶剂中单独聚合氯丁二烯或与可与氯丁二烯共聚的一种或多种单体组合 或更低，并且选自芳族烃，脂族卤代烃和环醚，或（2）在二硫化碳中，其存在量为每100重量份的约20至200重量份 所述总单体在由下式表示的黄原二硫化物存在下进行：其中R可含有1至12个碳原子，并且为烷基，芳基，芳烷基或脂环族基团，其为 存在的量基本上等于每100重量份总单体约2.5至20重量份的二乙基黄原二硫化物的比例。 通过使聚合物或含聚合物的溶液与由下式表示的醇接触来纯化氯丁二烯类液体聚合物：
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