Radiation stable aromatic carbonate polymer compositions
    4.
    发明申请
    Radiation stable aromatic carbonate polymer compositions 有权
    辐射稳定的芳族碳酸酯聚合物组合物

    公开(公告)号:US20070081918A1

    公开(公告)日:2007-04-12

    申请号:US11244600

    申请日:2005-10-06

    IPC分类号: A61L2/08 C08K5/053

    CPC分类号: C08K5/005 C08K5/05 C08L69/00

    摘要: A composition comprising an aromatic carbonate polymer and an amount of at least one solid cyclic aliphatic alcohol stabilizing compound sufficient to inhibit yellowing of the composition upon exposure to a sterilizing radiation, wherein said stabilizing compound is selected from the group consisting of 2,2,4,4-tetramethylcyclobutane-1,3-diol, 1,4-cyclohexanediol, and wherein said stabilizing compound is present in said composition in an amount of at least about 0.2 parts by weight per 100 parts by weight of said aromatic carbonate polymers.

    摘要翻译: 一种组合物,其包含芳族碳酸酯聚合物和一定量的至少一种固体环状脂族醇稳定化合物,其足以在暴露于消毒辐射时抑制组合物泛黄,其中所述稳定化合物选自2,2,4 ,4-四甲基环丁烷-1,3-二醇,1,4-环己二醇,并且其中所述稳定化合物以每100重量份所述芳族碳酸酯聚合物至少约0.2重量份的量存在于所述组合物中。

    POLYCARBONATE-POLY(ALKYLENE OXIDE) COPOLYMER COMPOSITIONS AND ARTICLES FORMED THEREFROM
    8.
    发明申请
    POLYCARBONATE-POLY(ALKYLENE OXIDE) COPOLYMER COMPOSITIONS AND ARTICLES FORMED THEREFROM 有权
    聚碳酸酯 - 聚(亚烷基氧化物)共聚物组合物及其形成的制品

    公开(公告)号:US20080312373A1

    公开(公告)日:2008-12-18

    申请号:US11763927

    申请日:2007-06-15

    IPC分类号: C08G64/04 C08G63/02 C08G75/20

    摘要: Disclosed herein is a polycarbonate copolymer comprising A) a structure derived from a dihydroxy alkylene oxide compound selected from the group consisting of formula (1a) and formula (1b): H-(E-X)l—OH   (1a) H-(E-X-E)l-OH   (1b) wherein E and X are different and each and independently are selected from the group consisting of formula (2a) and formula (2b): —(OCH2CH2)m—   (2a) —(OCHRCH2)n—   (2b) wherein R is a C1-8 alkyl group; l, m, and n are integers greater than or equal to 1; and wherein the weight average molecular weight of the total amount of the structures corresponding to formula (2b) in the copolymer is between 100 and 2,000 g/mol; and B) a structure derived from a dihydroxy aromatic compound, wherein the weight percentages are based on the total weight of the structures of A) and B).

    摘要翻译: 本文公开了一种聚碳酸酯共聚物,其包含A)衍生自选自式(1a)和式(1b)的二羟基氧化烯化合物的结构:<?在线式描述=“在线配方”末端 =“lead”→H(EX)1-OH(1a)<?in-line-formula description =“In-line Formulas”end =“tail”?> <?in-line-formula description =“In 线型公式“end =”lead“?> H-(EXE)1-OH(1b)<?in-line-formula description =”In-line Formulas“end =”tail“?>其中E和X不同 并且各自独立地选自式(2a)和式(2b):<?in-line-formula description =“In-line formula”end =“lead”→>(OCH 2 CH 2)m-( 2a)<?in-line-formula description =“In-line Formulas”end =“tail”?> <?in-line-formula description =“In-line formula”end =“lead”?> - (OCHRCH2) n-(2b)<?in-line-formula description =“In-line Formulas”end =“tail”?>其中R是C1-8烷基; l,m和n是大于或等于1的整数; 并且其中共聚物中对应于式(2b)的结构的总量的重均分子量为100至2,000g / mol; 和B)衍生自二羟基芳族化合物的结构,其中所述重量百分比基于A)和B)的结构的总重量。