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    • 4. 发明授权
    • Thermoplastic molding compositions containing polycarbonate and a graft
copolymer of resin-forming monomers on a rubber
    • 含有聚碳酸酯和树脂形成单体在橡胶上的接枝共聚物的热塑性成型组合物
    • US4603169A
    • 1986-07-29
    • US722363
    • 1985-04-12
    • Konrad MitullaJuergen HambrechtAdolf EchteJohann SwobodaPeter Siebel
    • Konrad MitullaJuergen HambrechtAdolf EchteJohann SwobodaPeter Siebel
    • C08L51/04C08L69/00
    • C08L51/04C08L69/00Y10S525/902
    • A thermoplastic molding material consists of a polycarbonate A and a graft copolymer B, the latter consisting of an elastomer (rubber) (b.sub.1) and a shell (b.sub.2) grafted onto the elastomer.The elastomer (b.sub.1) contains, as copolymerized units, from 35 to 100% by weight of a diene from the group consisting of the conjugated dienes of 4 to 5 carbon atoms, and can contain, as copolymerized units, from 0 to 65% by weight of a monomer from the group consisting of the alkyl acrylates or alkyl methacrylates, where alkyl is of 1 to 8 carbon atoms.The shell (b.sub.2) is obtained in a conventional manner by successive polymerization of the monomers constituting the shell, in two process steps, in the presence of the elastomer (b.sub.1); in a first process step, from 10 to 90% by weight of a mixture of a vinylaromatic hydrocarbon and one or more ethylenically unsaturated monomers which differ from the said hydrocarbon, in a weight ratio of from 90:10 to 60:40, are first incorporated as copolymerized units, followed by the polymerization of from 90 to 10% by weight of a monomer from the group consisting of the alkyl acrylates or of the alkyl methacrylates, where alkyl is of 1 to 8 carbon atoms.The molding material is used for the production of shaped articles.
    • 热塑性成型材料由聚碳酸酯A和接枝共聚物B组成,后者由接枝到弹性体上的弹性体(橡胶)(b1)和壳(b2)组成。 作为共聚单元,弹性体(b1)含有35〜100重量%的由4〜5个碳原子的共轭二烯组成的组的二烯,可以以共聚单位含有0〜65重量% 由丙烯酸烷基酯或甲基丙烯酸烷基酯组成的组中的单体重量,其中烷基具有1至8个碳原子。 壳(b2)以常规方式通过在两个工艺步骤中在弹性体(b1)的存在下连续聚合构成壳的单体获得; 在第一工艺步骤中,以90:10至60:40的重量比为10至90重量%的乙烯基芳烃和一个或多个与所述烃不同的烯键式不饱和单体的混合物是第一 作为共聚单元引入,然后聚合90至10重量%的由丙烯酸烷基酯或甲基丙烯酸烷基酯组成的组的单体,其中烷基具有1至8个碳原子。 成型材料用于成型制品的生产。
    • 5. 发明申请
    • Continuous recovery of styrene from a styrene-containing mixture
    • 从含苯乙烯的混合物中连续回收苯乙烯
    • US20050090703A1
    • 2005-04-28
    • US10990954
    • 2004-11-18
    • Konrad MitullaHeinz Sutoris
    • Konrad MitullaHeinz Sutoris
    • B01D3/32C07C7/05C07C7/20C07C7/00
    • C07C7/05B01D3/322C07C7/20C07C15/46
    • Styrene is recovered continuously from a styrene-containing mixture by distillation of the mixture in a cascade of n distillation columns, where (i) a feed stream comprising a stabilizer system is fed into the first column and/or a stabilizer system is introduced into at least one distillation column upstream of the nth distillation column, where the stabiliser system comprises N-oxyl radicals; (ii) a high boiler fraction having a boiling point higher than that of styrene and comprising the stabilizer system accumulates in the bottom of the nth distillation column; (iii) a substream of the high boiler fraction is recirculated and introduced into at least one distillation column upstream of the nth distillation column; (iv) the remainder of the high boiler fraction is discharged from the process.
    • 苯乙烯通过在n级蒸馏塔级联中蒸馏混合物从含苯乙烯的混合物中连续回收,其中(i)将包含稳定剂体系的进料流进料到第一塔和/或稳定剂体系中 在第n个蒸馏塔上游的至少一个蒸馏塔,其中稳定剂体系包含N-氧基; (ii)沸点高于苯乙烯并且包含稳定剂体系的高沸点馏分积聚在第n个蒸馏塔的底部; (iii)高沸点馏分的分流再循环并引入第n蒸馏塔上游的至少一个蒸馏塔; (iv)高锅炉部分的剩余部分从该过程中排出。