SULFUR-STABILIZED COPOLYCARBONATES AND ARTICLES FORMED THEREFROM

    公开(公告)号:US20200172665A1

    公开(公告)日:2020-06-04

    申请号:US16679807

    申请日:2019-11-11

    Abstract: A copolycarbonate includes 0.005-0.1 mole percent of sulfur-containing carbonate units derived from a sulfur-containing bisphenol monomer, 2-95 mole percent of high heat carbonate units derived from a high heat aromatic dihydroxy monomer, and 5-98 mole percent of a low heat carbonate units derived from a low heat aromatic monomer, each based on the sum of the moles of the carbonate units; and optionally, thioether carbonyl endcaps of the formula —C(═O)-L-S—R, wherein L is a C1-12 aliphatic or aromatic linking group and R is a C1-20 alkyl, C6-18 aryl, or C7-24 arylalkylene; wherein the sulfur content of the high heat copolycarbonate in the absence of the thioether endcaps is from 5-20 parts per million by weight.

    POLY(ESTER-CARBONATE) COPOLYMERS, ARTICLES FORMED THEREFROM, AND METHODS OF MANUFACTURE

    公开(公告)号:US20190112420A1

    公开(公告)日:2019-04-18

    申请号:US16096502

    申请日:2017-04-28

    CPC classification number: C08G63/64 C08K5/13

    Abstract: A poly(ester-carbonate) copolymer comprises carbonate units of the formula (I); and ester units of the formula (II) wherein: T is a C2-20 alkylene, a C6-20 cycloalkylene, or a C6-20 arylene; and R1 and J are each independently (a) a bisphenol A divalent group and (b) a C16 or higher divalent group (b), wherein the C16 or higher divalent group is present in an amount of 40 to 50 mol %; the ester units are present in an amount of 40 to 60 mol %; the poly(ester-carbonate) copolymer has a weight average molecular weight of 18,000 to 24,000 Daltons; and a sample of the composition has a glass transition temperature of 210° C. to 235° C. as determined by differential scanning calorimetry (DSC) as per ASTM D3418 with a 20° C./min heating rate; and a melt viscosity of less than 1050 Pa-s at 644 sec-1 and 350° C., determined according to ISO 11443.

    INTERIOR TRAIN COMPONENTS HAVING LOW SMOKE AND LOW HEAT RELEASE, AND METHODS OF THEIR MANUFACTURE
    7.
    发明申请
    INTERIOR TRAIN COMPONENTS HAVING LOW SMOKE AND LOW HEAT RELEASE, AND METHODS OF THEIR MANUFACTURE 审中-公开
    具有低烟和低热释放的内部火车部件及其制造方法

    公开(公告)号:US20160129923A1

    公开(公告)日:2016-05-12

    申请号:US14997729

    申请日:2016-01-18

    Abstract: Seat components and claddings for railway molded or formed from a thermoplastic polymer composition comprising, based on the total weight of the composition, 50 to 93 wt. % of a specific polycarbonate; 4 to 30 wt. % of a poly(carbonate-siloxane) comprising bisphenol A carbonate units, and siloxane units; 3 to 20 wt. % of an organophosphorus compound in an amount effective to provide 0.1 to 2.0 wt. % of phosphorus, based on the total weight of the thermoplastic polymer composition; wherein an article having a thickness of 0.5 to 10 mm molded from the composition has a Ds-4 smoke density≦300 measured according to ISO 5659-2, and a MAHRE≦90 kW/m2 measured according to ISO 5660-1, a multiaxial impact energy≧100 J, and a ductility in multiaxial impact of 80 to 100% at +23° C. according to ISO 6603.

    Abstract translation: 用于由热塑性聚合物组合物模制或形成的铁路的座椅部件和包层,包括基于组合物的总重量为50至93wt。 %的特定聚碳酸酯; 4〜30重量% %的含有双酚A碳酸酯单元的聚(碳酸酯 - 硅氧烷)和硅氧烷单元; 3〜20重量% %的有机磷化合物的量有效提供0.1至2.0wt。 基于热塑性聚合物组合物的总重量的磷的百分比; 其中由组合物模制的具有0.5至10mm厚度的制品具有根据ISO 5659-2测量的Ds-4烟密度和nlE; 300,根据ISO 5660-1测量的MAHRE&NlE; 90kW / m 2,多轴 冲击能≥100J,根据ISO 6603,在+ 23℃下多轴冲击的延展性为80〜100%。

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