METHODS FOR MEASURING PROPERTIES IN CROSSLINKED POLYCARBONATE
    22.
    发明申请
    METHODS FOR MEASURING PROPERTIES IN CROSSLINKED POLYCARBONATE 有权
    测量交联聚碳酸酯性能的方法

    公开(公告)号:US20160289378A1

    公开(公告)日:2016-10-06

    申请号:US15036552

    申请日:2014-11-14

    CPC classification number: C08G64/14 C08G64/42 C08K5/0066 G01N33/442 C08L69/00

    Abstract: Methods for measuring certain properties of a crosslinked polycarbonate are disclosed. The storage modulus of a crosslinked polycarbonate is measured over a specified temperature range, and the average magnitude of the storage modulus over that temperature range is obtained. The average magnitude can be correlated to both crosslinking within the polycarbonate, and to the flame performance of the crosslinked polycarbonate.

    Abstract translation: 公开了用于测量交联聚碳酸酯的某些性质的方法。 在特定的温度范围内测量交联聚碳酸酯的储能模量,并获得在该温度范围内的储能模量的平均值。 平均幅度可以与聚碳酸酯内的交联和交联聚碳酸酯的火焰性能相关。

    FLAME RETARDANT POLYCARBONATE COMPOSITIONS, METHODS OF MANUFACTURE, AND ARTICLES FORMED THEREFROM
    24.
    发明申请
    FLAME RETARDANT POLYCARBONATE COMPOSITIONS, METHODS OF MANUFACTURE, AND ARTICLES FORMED THEREFROM 审中-公开
    阻燃聚碳酸酯组合物,制造方法和形成的制品

    公开(公告)号:US20150175802A1

    公开(公告)日:2015-06-25

    申请号:US14639462

    申请日:2015-03-05

    Abstract: A composition comprising: a first polycarbonate comprising a poly(siloxane-carbonate); a second polycarbonate different from the first polycarbonate; and optionally, a third polycarbonate different from the first and second polycarbonate; wherein the first polycarbonate is present in an amount effective to provide the siloxane units of in the first polycarbonate in an amount of at least 0.3 wt %, and the second polycarbonate is present in an amount effective to provide the bromine of the second polycarbonate in an amount of at least 7.8 wt %; and further wherein an article molded from the composition has an OSU integrated 2 minute heat release test value of less than 65 kW-min/m2 and a peak heat release rate of less than 65 kW/m2, and an E662 smoke test Dmax value of less than 200.

    Abstract translation: 一种组合物,其包含:包含聚(硅氧烷 - 碳酸酯)的第一聚碳酸酯; 不同于第一聚碳酸酯的第二聚碳酸酯; 和任选地,不同于第一和第二聚碳酸酯的第三聚碳酸酯; 其中所述第一聚碳酸酯以有效提供至少0.3重量%的量的所述第一聚碳酸酯中的硅氧烷单元的量存在,并且所述第二聚碳酸酯以有效提供所述第二聚碳酸酯的溴的量存在于 至少7.8wt%的量; 并且其中由所述组合物成型的制品具有小于65kW-min / m 2的OSU集成的2分钟的热释放试验值和小于65kW / m 2的峰值放热率,以及E662烟雾试验Dmax值 小于200。

    Poly(ester-carbonate) copolymers, articles formed therefrom, and methods of manufacture

    公开(公告)号:US10370487B2

    公开(公告)日:2019-08-06

    申请号:US16096502

    申请日:2017-04-28

    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.

    THERMOPLASTIC COMPOSITIONS HAVING LOW SMOKE, METHODS OF THEIR MANUFACTURE, AND USES THEREOF
    30.
    发明申请
    THERMOPLASTIC COMPOSITIONS HAVING LOW SMOKE, METHODS OF THEIR MANUFACTURE, AND USES THEREOF 审中-公开
    具有低烟雾的热塑性组合物,其制造方法及其用途

    公开(公告)号:US20160185960A1

    公开(公告)日:2016-06-30

    申请号:US15061514

    申请日:2016-03-04

    Abstract: A low smoke density thermoplastic composition comprising, based on the total weight of the thermoplastic composition, 70 to 95 wt % of a polycarbonate copolymer comprising first repeating units and second repeating units, wherein the first repeating units are not the same as the second repeating units, and wherein the first repeating units are bisphenol carbonate units of the formula wherein Ra and Rb are each independently C1-12 alkyl, C1-12 alkenyl, C3-8 cycloalkyl, or C1-12 alkoxy, p and q are each independently 0 to 4, and Xa is a single bond, —O—, —S—, —S(O)—, —S(O)2—, —C(O)—, a C1-11 alkylidene of formula —C(Rc)(Rd)— wherein Rc and Rd are each independently hydrogen or C1-10 alkyl, or a group of the formula —C(═Re)— wherein Re is a divalent C1-10 hydrocarbon group; and the second repeating units comprise bisphenol carbonate units that are not the same as the first repeating bisphenol carbonate units, siloxane units, arylate ester units, or a combination of arylate ester units and siloxane units; and 5 to 30 wt % of a polyetherimide based on the weight of the composition, wherein an article molded from the composition has a smoke density (Ds-4) value of equal to or less than 300 as measured by ISO 5659-2 on a 3 mm thick plaque.

    Abstract translation: 一种低烟密度热塑性组合物,其包含基于所述热塑性组合物的总重量为70至95重量%的包含第一重复单元和第二重复单元的聚碳酸酯共聚物,其中所述第一重复单元与所述第二重复单元不相同 并且其中所述第一重复单元是下式的双酚碳酸酯单元,其中R a和R b各自独立地为C 1-12烷基,C 1-12烯基,C 3-8环烷基或C 1-12烷氧基,p和q各自独立地为0至 4,Xa为单键,-O - , - S - , - S(O) - , - S(O)2 - , - C(O) )(Rd) - 其中R c和R d各自独立地为氢或C 1-10烷基,或式-C(= Re) - 的基团,其中Re为二价C 1-10烃基; 并且第二重复单元包括与第一重复双酚碳酸酯单元,硅氧烷单元,芳基酯单元或芳基酯单元和硅氧烷单元的组合不同的双酚碳酸酯单元; 和5至30重量%的基于组合物重量的聚醚酰亚胺,其中由组合物模制的制品的烟浓度(Ds-4)值等于或小于300,如通过ISO 5659-2测量的 3毫米厚的斑块。

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