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    • 4. 发明授权
    • Preparation of branched block copolymers
    • US4418180A
    • 1983-11-29
    • US296849
    • 1981-08-27
    • Gerhard HeinzBurghard SchmittIngo H. DornHermann GausepohlKarl GerberdingRudolf H. JungHans MittnachtJurgen PohrtPaul Witimer
    • Gerhard HeinzBurghard SchmittIngo H. DornHermann GausepohlKarl GerberdingRudolf H. JungHans MittnachtJurgen PohrtPaul Witimer
    • C08F297/04
    • C08F297/044
    • A process for the preparation of branched block copolymers of from 60 to 95% by weight of a monovinyl-aromatic monomer and from 40 to 5% by weight of a conjugated diene by polymerizing the monomers in an inert solvent in the presence of a monolithium-hydrocarbon as the initiator, wherein, in a first process stage (a), from 50 to 80, or where necessary at most 90, % by weight of the total amount of monovinyl-aromatic compound are polymerized to virtually complete conversion in the presence of a relatively small amount of the monolithium-hydrocarbon. This stage is carried out by starting with from 30 to 70% by weight of the vinyl-aromatic monomer and adding from 70 to 30% by weight in the feed, during the polymerization, in such a way that the polymerization temperature, which at the start of the polymerization is from 30.degree. to 40.degree. C., is kept at from 45.degree. to 70.degree. C., with use of reflux cooling. After all the monomer feed has been added, the reaction temperature is lowered to 30.degree.-40.degree. C. by evaporative cooling. In a second process stage (b), an additional amount of initiator is added to the reaction solution, after which from 1 to 30% by weight of the total amount of monovinyl-aromatic monomer can be added, the sum of the amounts of monovinyl-aromatic monomer added in the first and second process stages being at most 90% by weight of the total amount of monovinyl-aromatic monomer. The monovinyl-aromatic monomer added in the second process stage is polymerized to virtually complete conversion, employing the temperature profile described for stage (a). In process stage (c), the remainder of the monovinyl-aromatic monomer and all of the conjugated diene are added, at least predominantly in the form of a mixture, and polymerized so that the reaction temperature does not rise above 90.degree.-110.degree. C. Finally, after virtually complete conversion of the monomers, and preferably without prior cooling, a suitable liquid polyfunctional coupling agent is run in undiluted and the mixture of the linear block copolymers obtained, which still contain active terminal lithium-carbon bonds, is coupled, with stirring, to form branched block copolymers. The products prepared according to the invention are used for injection molding.
    • 5. 发明授权
    • Process for the manufacture of ABS polymers and use thereof in
preparation of molded parts
    • 制备ABS聚合物的方法及其在制备模制件中的用途
    • US4421895A
    • 1983-12-20
    • US329596
    • 1981-12-10
    • Adolf EchteHermann GausepohlKarl Gerberding
    • Adolf EchteHermann GausepohlKarl Gerberding
    • C08F2/06C08F279/02C08F279/04C08F287/00C08F291/02
    • C08F291/02C08F279/02C08F279/04C08F287/00
    • 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.
    • 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。
    • 6. 发明授权
    • Preparation of mixtures of linear three-block copolymers, and moldings
produced therefrom
    • 线性三嵌段共聚物的混合物的制备和由其制备的模制品
    • US4335221A
    • 1982-06-15
    • US185531
    • 1980-09-09
    • Karl Gerberding
    • Karl Gerberding
    • C08F297/04C08F257/02
    • C08F297/04
    • A process for the preparation of a mixture of linear three-block copolymers which contain from 70 to 80% by weight of styrene units and from 20 to 30% by weight of elastomeric polymer segments based on a conjugated diene, in a total of three stages, specific conditions in respect of the initiator and of the monomers to be polymerized being essential in the individual stages in order to ensure the polymodal structure of the three-block copolymers. After complete reaction of the monomers, the mixture of the living polymers is treated with proton-active compounds, and the mixture of the block copolymers is isolated by removing the solvent. The compositions obtained by the novel process are transparent and clear and have good mechanical properties. They are furthermore readily processable by the methods conventionally used for thermoplastics. The compositions are particularly suitable for the production of moldings and of packaging materials.
    • 制备线性三嵌段共聚物的混合物的方法,其包含70至80重量%的苯乙烯单元和20至30重量%的基于共轭二烯的弹性体聚合物链段,总共三个阶段 为了确保三嵌段共聚物的多嵌段结构,关于引发剂和待聚合单体的具体条件在各个阶段是必需的。 在单体完全反应后,用质子活性化合物处理活性聚合物的混合物,通过除去溶剂来分离嵌段共聚物的混合物。 通过新方法获得的组合物是透明和透明的并且具有良好的机械性能。 它们还可以通过常规用于热塑性塑料的方法而易于加工。 该组合物特别适用于生产模制品和包装材料。
    • 8. 发明授权
    • Continuous preparation of rubber-modified polymers of vinyl-aromatics
    • 连续制备乙烯基芳烃的橡胶改性聚合物
    • US4567232A
    • 1986-01-28
    • US650568
    • 1984-09-13
    • Adolf EchteHermann GausepohlJuergen HambrechtKarl Gerberding
    • Adolf EchteHermann GausepohlJuergen HambrechtKarl Gerberding
    • C08F2/02C08F2/06C08F279/02C08F291/02
    • C08F279/02C08F291/02
    • 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.
    • 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。