Process for the manufacture of ABS polymers and use thereof in
preparation of molded parts
    3.
    发明授权
    Process for the manufacture of ABS polymers and use thereof in preparation of molded parts 失效
    制备ABS聚合物的方法及其在制备模制件中的用途

    公开(公告)号:US4421895A

    公开(公告)日:1983-12-20

    申请号:US329596

    申请日:1981-12-10

    摘要: A process for making ABS polymer particles comprising continuous polymerization of a mixture of at least one of each of (a) an aromatic vinyl monomer, and (b) an ethylenically unsaturated monomer in a weight ratio of (a):(b) of 90:10 to 10:90 in the presence of at least one of each of (c) a rubber-like polymer in an amount of 3 to 35 percent by weight relative to the total weight of the monomers (a) and (b), (d) a solvent, (e) a radical initiator and (f) an optional chain transfer agent. The process is carried out at temperatures between 80.degree. C. to 180.degree. C. in two or more reaction zones while the reaction mixture is stirred and while the monomers and solvents are removed in a degassing zone. The rubber-like polymer (c) has a solution viscosity of less than 80 mPa.s and a ratio of the solution viscosity of (c) to a percent of solvent expressed by 100[(d)/(a+b+c+d)] equal to or less than 2.5 mPa.s/percent of solvent.

    摘要翻译: 制备ABS聚合物颗粒的方法,包括(a)芳族乙烯基单体和(b)烯属不饱和单体中的至少一种(a):(b)为90的混合物的混合物的连续聚合 在(c)相对于单体(a)和(b)的总重量为3〜35重量%的量的橡胶状聚合物中的至少一种存在下,10〜10:90, (d)溶剂,(e)自由基引发剂和(f)任选的链转移剂。 该方法在两个或更多个反应区中在80℃至180℃的温度下进行,同时搅拌反应混合物,同时在脱气区中除去单体和溶剂。 橡胶状聚合物(c)的溶液粘度小于80mPa.s,溶液粘度(c)与溶剂百分比的比例由100 [(d)/(a + b + c + d)]等于或小于2.5mPa.s /%的溶剂。

    Continuous preparation of rubber-modified polymers of vinyl-aromatics
    4.
    发明授权
    Continuous preparation of rubber-modified polymers of vinyl-aromatics 失效
    连续制备乙烯基芳烃的橡胶改性聚合物

    公开(公告)号:US4567232A

    公开(公告)日:1986-01-28

    申请号:US650568

    申请日:1984-09-13

    CPC分类号: C08F279/02 C08F291/02

    摘要: A process for the continuous preparation of rubber-modified polymers of vinyl-aromatics, wherein a mixture which contains a monomeric aromatic vinyl compound and from 3 to 30% by weight, based on the monomer, of an elastomeric polymer, with or without a solvent, is polymerized, in the presence of a free radical initiator and in the presence or absence of a mercaptan as chain transfer agent, at from 80.degree. to 180.degree. C., with stirring, in a cascade of two or more isothermally operated reaction zones and of one or more additional reaction zones which can be operated isothermally or with a rising temperature profile in such a way that the residence time of the reactants in the first reaction zone is .ltoreq.35 minutes. The polymer obtained is freed from vinyl-aromatic monomer, and from any solvent, in a devolatilization zone. The product is useful for the production of injection moldings.

    摘要翻译: 用于连续制备乙烯基芳族化合物的橡胶改性聚合物的方法,其中含有单体芳族乙烯基化合物和基于单体的3-30重量%的弹性体聚合物的混合物,具有或不具有溶剂 在存在自由基引发剂的情况下,在作为链转移剂的硫醇存在或不存在下,在80-180℃下,在搅拌下,在两个或更多个等温操作的反应区的级联中聚合 以及一个或多个另外的反应区,其可以等温或以升高的温度曲线操作,使得反应物在第一反应区中的停留时间为35分钟。 获得的聚合物在脱挥发分区域中不含乙烯基芳族单体和任何溶剂。 该产品可用于生产注射成型品。

    Impact-resistant thermoplastic molding materials with improved
stress-cracking resistance
    5.
    发明授权
    Impact-resistant thermoplastic molding materials with improved stress-cracking resistance 失效
    耐冲击热塑性成型材料具有改善的耐应力开裂性

    公开(公告)号:US4330641A

    公开(公告)日:1982-05-18

    申请号:US204527

    申请日:1980-11-06

    CPC分类号: C08F255/06 C08F279/02

    摘要: Thermoplastic molding materials which contain a copolymer which has been made impact-resistant with a rubber. The copolymer is produced by polymerizing a mixture of a monovinyl-aromatic compound and an acrylic acid derivative or methacrylic acid derivative in the presence of a rubber. The folding materials contain a specific proportion of soft component. The diameter of the particles of the soft component, and the swelling index of the soft component, lie within a specific range, and the tensile strength of the molding material is higher than the yield strength.

    摘要翻译: 含有已经用橡胶抗冲击的共聚物的热塑性成型材料。 共聚物通过在橡胶存在下聚合单乙烯基 - 芳族化合物和丙烯酸衍生物或甲基丙烯酸衍生物的混合物来制备。 折叠材料含有特定比例的软组分。 软组分的颗粒直径和软组分的溶胀指数在特定范围内,成型材料的拉伸强度高于屈服强度。

    Impact-resistant thermoplastic molding material
    6.
    发明授权
    Impact-resistant thermoplastic molding material 失效
    耐冲击热塑性成型材料

    公开(公告)号:US4493922A

    公开(公告)日:1985-01-15

    申请号:US573853

    申请日:1984-01-25

    IPC分类号: C08L51/04 C08L55/02 C08L53/02

    CPC分类号: C08L51/04 Y10S525/901

    摘要: An impact-resistant thermoplastic molding material, containing polystyrene as the matrix, and, dispersed therein, two elastomeric polymers or copolymers I and II composed entirely or predominantly of 1,3-dienes and containing particles of different mean size, namely, in I, particles from 0.2 to 0.6 .mu.m in size and having capsule particle morphology, and, in II, particles from 2 to 8 .mu.m in size, having cell particle or coil particle morphology.

    摘要翻译: 一种抗冲击热塑性成型材料,其包含聚苯乙烯作为基体,并分散在其中,两个完全或主要由1,3-二烯构成并含有不同平均尺寸的颗粒的弹性聚合物或共聚物I和II,即I, 颗粒尺寸为0.2至0.6微米,具有胶囊颗粒形态,II型颗粒尺寸为2至8微米,具有细胞颗粒或线粒体形态。

    Process for the continuous preparation of rubber-modified polymers of
vinylaromatics
    7.
    发明授权
    Process for the continuous preparation of rubber-modified polymers of vinylaromatics 失效
    连续制备乙烯基芳烃橡胶改性聚合物的方法

    公开(公告)号:US4427826A

    公开(公告)日:1984-01-24

    申请号:US273689

    申请日:1981-06-15

    IPC分类号: C08F2/38 C08F4/00 C08F279/02

    CPC分类号: C08F279/02

    摘要: A process, carried out without a diluent or in solution, in more than 2 reaction zones, for the continuous preparation of rubber-modified polymers of vinylaromatics, wherein a monomeric aromatic vinyl compound and an elastomeric polymer, in an amount of from 3 to 16% by weight based on the monomer, are polymerized, in the absence of a free radical initiator, but in the presence of a mercaptan as a chain transfer agent, at from 80.degree. to 180.degree. C. in a first reaction zone, with stirring, up to a maximum monomer conversion, U.sub.max, given by the equationU.sub.max =K-1where K is the amount of rubber in % by weight based on monomer, and, in a second reaction zone, polymerization is continued, with stirring, to a conversion of up to about 50% by weight, after which a chain transfer agent is introduced in an amount of from 0.01 to 0.2% by weight, based on vinyl-aromatic monomer, and polymerization is continued, if appropriate in more than one reaction zone, up to a monomer conversion of less than 85% by weight. The polymer is treated in a devolatilization zone to remove vinyl-aromatic monomer and solvent, if any, and these constituents are recycled to the process. The process produces products which exhibit good gloss coupled with good mechanical properties, and which can be employed for conventional applications.

    摘要翻译: 用于连续制备乙烯基芳族化合物的橡胶改性聚合物的方法,其中没有稀释剂或在溶液中,在多于2个反应区中进行,其中单体芳族乙烯基化合物和弹性体聚合物的量为3-16 基于单体的重量%在不存在自由基引发剂的情况下,在作为链转移剂的硫醇存在下,在第一反应区中在80-180℃下进行聚合,同时搅拌 ,达到最大单体转化率,Umax,由方程式Umax = K-1给出,其中K是基于单体的以重量%计的橡胶量,并且在第二反应区中,在搅拌下继续聚合至 高达约50重量%的转化率,之后以基于乙烯基芳族单体的0.01至0.2重量%的量引入链转移剂,并且如果适当的话在多于一个反应中继续聚合 区域,单体转化率小于 85重量%。 将聚合物在脱挥发区进行处理以除去乙烯基芳族单体和溶剂(如果有的话),并将这些组分再循环到该方法中。 该方法产生具有良好光泽性和良好机械性能的产品,并且其可用于常规应用。

    Manufacture of heat-stable brominated oligomers of monovinyl-aromatic
compounds
    9.
    发明授权
    Manufacture of heat-stable brominated oligomers of monovinyl-aromatic compounds 失效
    制备单乙烯基芳族化合物的热稳定溴化低聚物

    公开(公告)号:US4074032A

    公开(公告)日:1978-02-14

    申请号:US705278

    申请日:1976-07-14

    CPC分类号: C07C17/12 C08F8/22

    摘要: A process for the manufacture of heat-stable, brominated oligostyrenes by brominating selectively hydrogenated oligostyrenes in halogenated solvents in the presence of Lewis acids at from -25.degree. to +20.degree. C. The brominated oligomers are highly heat-stable and can be processed, by themselves or as components of mixtures with other thermoplastics, to give various shaped articles.

    摘要翻译: 在-25℃至+20℃的路易斯酸存在下,通过在卤代溶剂中溴化选择性氢化的低聚异丁烯来制造热稳定的溴化低聚物的方法。溴化低聚物是高度热稳定的, 自身或作为与其他热塑性塑料的混合物的组分,以产生各种成型制品。