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    • 2. 发明授权
    • Thermoplastic molding material
    • 热塑性成型材料
    • US4788253A
    • 1988-11-29
    • US627
    • 1987-04-17
    • Juergen HambrechtBurghard SchmittJohann SwobodaGeorg WassmuthClaus BernhardRudolf Stephan
    • Juergen HambrechtBurghard SchmittJohann SwobodaGeorg WassmuthClaus BernhardRudolf Stephan
    • C08L25/08C08L25/12C08L51/00C08L33/08
    • C08L25/08C08L25/12C08L51/003C08L51/00
    • The invention relates to a thermoplastic molding material of an elastomeric polymer A, a shell B grafted to the polymer A, and a copolymer C as rigid matrix. The amount of polymer A is 1 to 25 percent by weight based on the weight of A+B+C. It has a glass transition temperature, Tg, of less than 0.degree. C. and an average particle size of 200 to 750 nanometers (d.sub.50 value of the integral mass distribution) and is composed of: 50 to 99.9 percent by weight of at least one alkylacrylate with 1 to 8 carbon atoms in the alkyl radical and 0.1 to 5 percent by weight of a polyfunctional monomer which has a crosslinking action. Grafting shell B represents 5 to 40 percent by weight based on A+B+C and is composed of at least one of the monomers of the group of(b.sub.1) vinylaromatic monomers, and(b.sub.2) the ethylenically unsaturated monomers.Grafting shell B is prepared in two stages with 30 to 70 percent by weight of the monomers b.sub.1 being used in the first stage, and 30 to 70 percent by weight of a mixture of monomers b.sub.1 and b.sub.2 in a weight ratio of 90:10 to 60:40 being used in the second stage.Copolymer C is added in an amount of 35 to 94 percent by weight based on A+B+C and consists of a vinylaromatic monomer and an ethylenically unsaturated monomer.The molding material may contain commonly used additives in effective amounts and is used for the preparation of molded parts.
    • 本发明涉及弹性体聚合物A的热塑性模塑材料,接枝到聚合物A上的壳B和作为刚性基质的共聚物C. 基于A + B + C的重量,聚合物A的量为1〜25重量%。 玻璃化转变温度Tg小于0℃,平均粒度为200〜750纳米(d50整体质量分布值),由以下组成:50〜99.9重量%的至少1个 在烷基中具有1至8个碳原子的丙烯酸烷基酯和具有交联作用的多官能单体0.1至5重量%。 接枝壳B以A + B + C为5〜40重量%,由(b1)乙烯基芳族单体组中的至少一种单体和(b2)烯属不饱和单体构成。 接枝壳B分两步制备,在第一阶段使用的单体b1为30〜70重量%,单体b1和b2的混合物的重量比为90:10〜30重量%,重量比为90:10〜 60:40在第二阶段使用。 共聚物C的添加量为35〜94重量%,基于A + B + C,由乙烯基芳族单体和烯属不饱和单体构成。 成型材料可以含有有效量的常用添加剂,并用于制备模制件。
    • 4. 发明授权
    • Weathering-resistant, high-impact, easily colored thermoplastic
compositions
    • 抗风化,高冲击,易于着色的热塑性组合物
    • US4224419A
    • 1980-09-23
    • US31011
    • 1979-04-17
    • Johann SwobodaGerhard LindenschmidtClaus Bernhard
    • Johann SwobodaGerhard LindenschmidtClaus Bernhard
    • C08L51/00C08L51/04C08L33/08
    • C08L51/003
    • Mixtures which essentially consist of a graft copolymer (A), a graft copolymer (B) and a hard component (C), the latter consisting of copolymers of stryrene and/or .alpha.-methylstyrene with acrylonitrile. The graft copolymers (A) and (B) are each based on a crosslinked acrylic ester rubber onto which is grafted a mixture of styrene and acrylonitirle. They differ only slightly in chemical composition, but differ substantially in the particle size of the acrylic ester base used for grafting. The weight ratio of the grafting bases can be from 90:10 to 35:65, and the proportion of the two grafting bases together, based on the total mixture, is from about 10 to 35 percent by weight. Mixtures of the above 3 components are weathering-resistant, exhibit a high impact strength, and are easy to color. The use of such mixtures by conventional thermoplastic processing methods, eg. extrusion or injection molding, gives, especially after the material has been colored, vitrually no difference in hue in the vicinity of a gate or of a weld line, so that a great variety of moldings for daily use or for leisure purposes can be produced.
    • 基本上由接枝共聚物(A),接枝共聚物(B)和硬组分(C)组成的混合物,后者由苯乙烯和/或α-甲基苯乙烯与丙烯腈的共聚物组成。 接枝共聚物(A)和(B)均基于交联的丙烯酸酯橡胶,其上接枝苯乙烯和丙烯腈的混合物。 它们在化学组成上略有不同,但是在用于接枝的丙烯酸酯基团的粒度上差异很大。 接枝碱的重量比可以为90:10至35:65,基于总混合物,两个接枝碱的比例为约10-35重量%。 上述3种成分的混合物耐候性好,冲击强度高,易于着色。 通过常规热塑性加工方法使用这种混合物,例如 挤出或注射成型,特别是在材料着色后,在门或熔接线附近的色相差异不大,从而可以生产各种用于日常使用或休闲的模制品。