Polycarbonate foams
    31.
    发明授权
    Polycarbonate foams 失效
    聚碳酸酯

    公开(公告)号:US5132331A

    公开(公告)日:1992-07-21

    申请号:US815302

    申请日:1991-12-27

    CPC分类号: C08J9/125 C08J2369/00

    摘要: A foamable thermoplastic molding composition comprising:a) an aromatic polycarbonate, andb) 0.1 to 5% by weight of a hydrate of an inorganic salt, is disclosed. The salt is inert to the polycarbonate and is capable of releasing its water of hydration only at a temperature above 100.degree. C.The composition which may optionally further contain c) up to 10% by weight of a nucleating agent, and d) up to 30% by weight of glass fibers is characterized by its good pore structure.

    摘要翻译: 一种可发泡热塑性模塑组合物,其包含:a)芳族聚碳酸酯,和b)0.1至5重量%的无机盐水合物。 该盐对聚碳酸酯是惰性的,并且只能在高于100℃的温度下释放其水合水。可任选地进一步含有c)至多10重量%的成核剂的组合物,和d)直到 30%(重量)玻璃纤维的特征在于其孔结构良好。

    Process for the production of aromatic polyesters
    35.
    发明授权
    Process for the production of aromatic polyesters 失效
    生产芳香族聚酯的方法

    公开(公告)号:US4923957A

    公开(公告)日:1990-05-08

    申请号:US292917

    申请日:1989-01-03

    CPC分类号: C08G63/78 C08G63/195

    摘要: Aromatic polyesters based on diphenols and iso- and/or terephthalic acid are produced by transesterification of esters of the diphenols with the aromatic dicarboxylic acids in the melt by first reacting the aromatic dicarboxylic acids with a stoichiometric excess of the diphenol esters to form oligomers and then condensing the resulting oligomers to the aromatic polyesters with elimination and removal by distillation of diphenol ester.

    摘要翻译: 基于二酚和异 - 和/或对苯二甲酸的芳族聚酯通过首先使芳族二羧酸与化学计量过量的二酚酯反应形成低聚物,然后通过二元酚的酯与芳族二羧酸在熔体中的酯交换而产生,然后 通过蒸馏二酚酯消除和除去,将所得的低聚物缩合成芳族聚酯。

    Flame retardant polycarbonate compositions
    37.
    发明授权
    Flame retardant polycarbonate compositions 失效
    阻燃聚碳酸酯组合物

    公开(公告)号:US4753994A

    公开(公告)日:1988-06-28

    申请号:US936852

    申请日:1986-12-02

    CPC分类号: C08J3/005 C08L69/00

    摘要: The present invention is related to polycarbonate molding compositions containing a co-precipitate of a polycarbonate resin and a fluoropolymer. This co-precipitate was found to be suitable as an additive for polycarbonate resins because it offers improved dispersibility with the resin and good flammability performance as well as aesthetic characteristics. The co-precipitate is prepared by first mixing an aqueous dispersion of a fluoropolymer with a polycarbonate solution and then precipitating both using a suitable precipitation agent. After isolation washing and drying the co-precipitate of the invention is suitable for incorporation in a polycarbonate resin optionally with known flame retarding agents. Molded parts prepared from the compositions of the invention are characterized by their improved homogeneity and flame retardance.

    摘要翻译: 本发明涉及含有聚碳酸酯树脂和含氟聚合物的共沉淀物的聚碳酸酯模塑组合物。 发现这种共沉淀物适合作为聚碳酸酯树脂的添加剂,因为它提供了与树脂的改善的分散性和良好的可燃性以及美学特性。 通过首先将含氟聚合物的水性分散体与聚碳酸酯溶液混合,然后使用合适的沉淀剂沉淀二者来制备共沉淀物。 分离洗涤和干燥后,本发明的共沉淀物适合于任选地使用已知的阻燃剂掺入聚碳酸酯树脂中。 由本发明组合物制备的成型部件的特征在于其均匀性和阻燃性的改善。

    Copolymers of propylene and allyl alcohol
    38.
    发明授权
    Copolymers of propylene and allyl alcohol 失效
    丙烯和烯丙醇的共聚物

    公开(公告)号:US4423196A

    公开(公告)日:1983-12-27

    申请号:US321277

    申请日:1981-11-13

    CPC分类号: C08F210/00 C08F210/06

    摘要: Copolymers of (a) one or more .alpha.-olefins having the formula (A) ##STR1## wherein R is a C.sub.1 -C.sub.16 alkyl group or a phenyl group; and (b) one or more substituted .alpha.-olefins having the formula (B) ##STR2## wherein R.sup.1 is a hydrogen atom or a methyl group, R.sup.2 is a hydrogen atom or a C.sub.1 -C.sub.4 alkyl group, and Z is an --OH, --COOH, ##STR3## in which R.sup.3 is a hydrogen atom or a C.sub.1 -C.sub.4 alkyl group, and each of R.sup.4 and R.sup.5 is a C.sub.1 -C.sub.4 alkyl group, said copolymers having from 1 to 50% by weight of the monomers of formula (B) incorporated therein in polymerized form and a melt flow index (MSI 230/5) of from 2 to 20 g/10 min. and a process for their manufacture.

    摘要翻译: (a)一种或多种具有式(A)的α-烯烃的共聚物(A)其中R是C 1 -C 16烷基或苯基; 和(b)一种或多种具有式(B)的取代的α-烯烃(B)其中R1是氢原子或甲基,R2是氢原子或C1-C4烷基,Z是 其中R 3是氢原子或C 1 -C 4烷基,R 4和R 5各自是C 1 -C 4烷基的-OH,-COOH,< IMAGE>所述共聚物具有1至50重量% 其中以聚合形式掺入的式(B)单体和2至20g / 10min的熔体流动指数(MSI 230/5)。 及其制造工艺。

    Polyene/.alpha.-olefin copolymers
    39.
    发明授权
    Polyene/.alpha.-olefin copolymers 失效
    聚烯烃/α-烯烃共聚物

    公开(公告)号:US4369291A

    公开(公告)日:1983-01-18

    申请号:US289389

    申请日:1981-08-03

    CPC分类号: C08F297/06 C08F279/02

    摘要: Copolymers or graft copolymers of from 5 to 95% by weight of .alpha.-olefins corresponding to the following general formula (A): ##STR1## wherein R.sup.1 represents alkyl having from 1 to 16 carbon atoms or phenyl; and from 5 to 95% by weight of straight-chain, branch-chain or crosslinked 1,4-polyenes, and a process for the preparation of such polymers, wherein one or more .alpha.-olefins (A) are reacted with a solid catalytic complex based on TiCl.sub.3 and aluminum compounds corresponding to the following general formula (C):Al R.sup.2.sub.n X.sub.3-n (C)wherein R.sup.2 represents C.sub.1 -C.sub.18 alkyl; X represents halogen, preferably chlorine; and 0

    摘要翻译: 对应于下列通式(A)的5至95重量%的α-烯烃的共聚物或接枝共聚物:其中R 1表示具有1至16个碳原子的烷基或苯基; 和5至95重量%的直链,支链或交联的1,4-多烯,以及制备这种聚合物的方法,其中一种或多种α-烯烃(A)与固体催化剂 基于TiCl 3和对应于以下通式(C)的铝化合物:Al R2nX3-n(C)其中R2表示C1-C18烷基; X表示卤素,优选氯; 和0