Process for the preparation of carbonic acid aryl esters of
polyester-diols lengthened via carbonate groups
    31.
    发明授权
    Process for the preparation of carbonic acid aryl esters of polyester-diols lengthened via carbonate groups 失效
    通过碳酸酯基团延长的聚酯二醇的碳酸芳酯的制备方法

    公开(公告)号:US4217297A

    公开(公告)日:1980-08-12

    申请号:US886212

    申请日:1978-03-13

    CPC分类号: C08G63/64

    摘要: The present invention relates to a process for the preparation of bis-carbonic acid monoaryl esters of polyester-diols, lengthened via --OCOO-- groups, characterized in that polyester-diols with molecular weights Mn (number-average) of over 250, preferably over 600, are heated with carbonic acid bis-aryl esters at temperatures between about 100.degree. C. and 200.degree. C., preferably between about 110.degree. C. and 180.degree. C., in vacuo below about 35 mm Hg, preferably between about 25 and 1 mm Hg, in the presence of catalysts, less than one mol of carbonic acid bis-aryl ester being employed per mol of OH group of the polyester-diol and the hydroxyaryl compounds formed being distilled off.The invention further relates to the bis-carbonic acid aryl esters of polyester-diols lengthened via --OCOO-- groups.

    摘要翻译: 本发明涉及通过-OCOO-基团来制备聚酯二醇的双碳酸单芳基酯的方法,其特征在于分子量Mn(数均分子)超过250的聚酯二醇优选超过 600,在约100℃至200℃之间,优选约110℃至180℃之间的温度下,用碳酸双芳基酯加热,真空度低于约35mmHg,优选约25mm 和1mm Hg,在催化剂的存在下,每摩尔聚酯二醇的OH基和所形成的羟基芳基化合物使用少于1摩尔的碳酸双芳基酯。 本发明还涉及通过-OCOO-基团延长的聚酯二醇的双碳酸芳基酯。

    Power circuit-breaker
    32.
    发明授权
    Power circuit-breaker 失效
    电源断路器

    公开(公告)号:US5898149A

    公开(公告)日:1999-04-27

    申请号:US662939

    申请日:1996-06-12

    摘要: This power circuit-breaker has at least one cylindrically constructed arcing chamber which is provided with a stationary contact, with a moving contact and with a quenching zone between the two contacts. A shaft of the moving contact is permanently connected to a blowout volume which is closed off on the stationary contact side by an insulating nozzle through which at least one flow channel passes. The arcing chamber has a first compression volume which is operatively connected to the blowout volume and to a second compression volume. It is intended to provide a power circuit-breaker in which the blowing-out of the arc with pure SF.sub.6 gas is made stronger. This is achieved by providing a moving auxiliary piston between the first compression volume and the second compression volume and by the auxiliary piston being connected to the moving contact via a direction-changing device.

    摘要翻译: 该电源断路器具有至少一个圆柱形构造的电弧室,该电弧室设置有具有可移动触点的固定触点和两个触点之间的淬火区域。 可移动触点的轴永久地连接到通过至少一个流动通道通过的绝缘喷嘴在固定触点侧封闭的吹出口。 电弧室具有可操作地连接到吹出体积和第二压缩体积的第一压缩体积。 旨在提供一种电源断路器,其中使具有纯SF6气体的电弧吹出更强。 这通过在第一压缩容积和第二压缩容积之间提供移动的辅助活塞,并且辅助活塞经由方向改变装置连接到移动触点来实现。

    Graft polymer dispersions
    35.
    发明授权
    Graft polymer dispersions 失效
    接枝聚合物分散体

    公开(公告)号:US5238977A

    公开(公告)日:1993-08-24

    申请号:US902466

    申请日:1992-06-19

    IPC分类号: C08F283/12 C08L51/08

    摘要: Free-flowing, stable dispersions of crosslinked rubbers in the form of discrete particles having an average diameter of 0.1 to 3 .mu.m in organic liquids, containingI) up to 60% by weight (based on the dispersion as a whole) of a crosslinked, rubber-like, particulate graft polymer of a) a crosslinked silicone rubber as core and crosslinked acrylate rubber b) graft polymerized thereon as the rubber andII) a liquid, organic N,N-substituted amide as the continuous organic phase,and a process for their production.

    摘要翻译: 交联橡胶在有机液体中具有平均直径为0.1至3μm的离散颗粒形式的自由流动稳定的分散体,其含有I)至多60重量%(基于分散体作为整体)交联的 ,a)交联硅橡胶为核心的交联丙烯酸酯橡胶和交联丙烯酸酯橡胶的橡胶状颗粒接枝聚合物,b)作为橡胶接枝在其上,II)作为连续有机相的液态有机N,N-取代酰胺,和 生产过程。

    Molding compounds containing oxetanyl groups
    38.
    发明授权
    Molding compounds containing oxetanyl groups 失效
    含有OXETANYL组的成型化合物

    公开(公告)号:US5155168A

    公开(公告)日:1992-10-13

    申请号:US633464

    申请日:1990-12-24

    CPC分类号: C08L51/04 C08L69/00

    摘要: Polymer mixtures ofA) 5 to 98 parts by weight and preferably 20 to 95 parts by weight of an aromatic polycarbonate,B) 2 to 70 parts by weight and preferably 5 to 60 parts by weight of a graft polymer of resin-forming monomers on a particulate diene and/or acrylate rubber having an average particle diameter (d.sub.50) of from 80 to 800 nm and preferably from 100 to 600 nm,C) 0 to 80 parts by weight and preferably 0.5 to 40 parts by weight of an uncrosslinked thermoplastic vinyl copolymer having a softening temperature above 30.degree. C.,in which either the resin-forming monomers in B) or a monomer of the thermoplastic vinyl copolymer C) or both have contained a monomer corresponding to formula (I) ##STR1## in which R.sup.1 =H, CH.sub.3 ; R.sup.2 =C.sub.1-8 alkylene; R.sup.3 =C.sub.1-4 alkylene, in such a quantity that the structural elements containing oxetanyl groups emanating therefrom make up from 0.05 to 5% by weight and the use of the thermoplastic molding compounds.

    摘要翻译: A)5至98重量份,优选20至95重量份的芳族聚碳酸酯的聚合物混合物,B)2至70重量份,优选5至60重量份的树脂形成单体的接枝聚合物 平均粒径(d50)为80〜800nm,优选为100〜600nm的颗粒状二烯和/或丙烯酸酯橡胶,C)0〜80重量份,优选0.5〜40重量份的未交联的热塑性塑料 软化温度高于30℃的乙烯基共聚物,其中B)中的树脂形成单体或热塑性乙烯基共聚物C)的单体或两者都含有对应于式(I)的单体(I) )其中R1 = H,CH3; R2 = C1-8亚烷基; R3 = C1-4亚烷基,其含有由其发出的氧杂环丁烷基的结构元素占0.05至5重量%,以及使用热塑性模塑料。

    Polycarbonate molding compositions
    39.
    发明授权
    Polycarbonate molding compositions 失效
    聚碳酸酯成型组合物

    公开(公告)号:US5126404A

    公开(公告)日:1992-06-30

    申请号:US517084

    申请日:1990-05-01

    CPC分类号: C08L51/04 C08L69/00

    摘要: Thermoplastic molding composition comprisingA. 5 to 99% by weight (based on A+B) of a polycarbonate based on substituted dihydroxydiphenyl cycloalkanesB. 1 to 95% by weight (based on A+B) of a graft polymer prepared by a special process of5 to 90 parts by weight of a mixture ofB.1.1. 50 to 95 parts by weight styrene, .alpha.-methyl styrene, C.sub.1-4 alkyl- or halogen-nucleus-substituted styrenes, C.sub.1-8 alkyl methacrylates, C.sub.1-8 alkyl acrylates or mixtures thereof andB.1.2. 5 to 50 parts by weight acrylonitrile, methacrylonitrile, C.sub.1-8 alkyl methacrylates, C.sub.1-8 alkyl acrylates, maleic anhydride, C.sub.1-4 alkyl-N-maleic imides, phenyl-N-maleic imides or mixtures thereof onB.2. 10 to 95 parts by weight of a diene rubber having an average particle diameter d50 of from 0.09 to 1 .mu.m and a gel content of more than 50% by weight and optionally at least one other thermoplastic resin which replaces up to 75% by weight of the polycarbonate A.

    摘要翻译: 含有5至99重量%(基于A + B)的基于取代的二羟基二苯基环烷烃的聚碳酸酯的热塑性模制组合物.B.1至95重量%(基于A + B)由特殊的 方法为5〜90重量份B.1.1的混合物。 50至95重量份苯乙烯,α-甲基苯乙烯,C 1-4烷基或卤素 - 核取代的苯乙烯,甲基丙烯酸C 1-8烷基酯,丙烯酸C 1-8烷基酯或其混合物和B.1.2。 5至50重量份丙烯腈,甲基丙烯腈,甲基丙烯酸C 1-8烷基酯,丙烯酸C 1-8烷基酯,马来酸酐,C 1-4烷基-N-马来酰亚胺,苯基-N-马来酰亚胺或其在B.2上的混合物。 10至95重量份平均粒径d 50为0.09至1微米且凝胶含量大于50重量%的二烯橡胶和任选的至少一种其它热塑性树脂,其代替75重量% 的聚碳酸酯A.