THERMOPLASTIC COMPOSITIONS
    5.
    发明公开

    公开(公告)号:US20240166865A1

    公开(公告)日:2024-05-23

    申请号:US18281048

    申请日:2022-03-09

    Abstract: A thermoplastic composition comprising: 45-90 wt % of a polycarbonate; 5-15 wt % of a brominated polycarbonate; a polycarbonate-siloxane copolymer in an amount effective to provide 0.2-2 wt % siloxane based on the total weight of the thermoplastic composition; 2-10 wt % of a silicone-containing impact modifier comprising a core-shell impact modifier; 0.1-1 wt % of a flame retardant comprising an alkyl sulfonate salt, aromatic sulfone sulfonate, an aromatic sulfonate salt, or a combination thereof; optionally, 0.5-10 wt % titanium dioxide; optionally, 0.1-1 wt % carbon black, wherein the wt % of each component is based on the total weight of the composition, which totals 100 wt %.

    THERMOPLASTIC POLYCARBONATE COMPOSITIONS AND SHAPED ARTICLES THEREOF

    公开(公告)号:US20230416525A1

    公开(公告)日:2023-12-28

    申请号:US18035877

    申请日:2021-11-08

    Abstract: A thermoplastic polycarbonate composition comprising: 5 to 28 wt % of a brominated polycarbonate; 45 to 90 wt % of a homopolycarbonate having a weight average molecular weight from 20,000-25,000 grams/mole as measured via gel permeation chromathography using bisphenol A homopolycarbonate standards; 0 to 15 wt % of an aromatic poly(ester-carbonate) comprising carbonate units derived from bisphenol A, resorcinol, or a combination thereof, and ester units derived from a bisphenol, preferably bisphenol A, or resorcinol, and terephthalic acid, isoterephthalic acid, or a combination thereof, wherein a molar ratio of carbonate units to ester units ranges from 1:99 to 99:1; 2 to 10 wt % of a core-shell impact modifier; 1 to 7 wt % of an α,β-unsaturated glycidyl ester copolymer impact modifier; 0.6 to 3.5 wt % color composition comprising titanium dioxide and carbon black; wherein the wt % of each component is based on the total weight of the composition, which totals 100 wt %.

    Polycarbonate Compositions with Thin Wall Flame Retardant Properties and Shaped Article Therefore

    公开(公告)号:US20230265283A1

    公开(公告)日:2023-08-24

    申请号:US18012487

    申请日:2021-06-24

    CPC classification number: C08L69/00 C08K5/5399 C08K7/14 C08K5/5419

    Abstract: Disclosed herein are compositions comprising from about 26 wt. % to about 89 wt. % of a polycarbonate polymer component, from about 0.5 wt. % to about 20 wt. % of phosphazene-based flame retardant, from about 0.01 wt. % to about 4 wt. % of a siloxane component, and from about 10 wt. % to about 50 wt. % of a filler component, wherein all weight percent are based on the total weight of the composition. The composition may exhibit a notched Izod impact strength of at least 150 J/m when tested in accordance with ASTM D256 at 23° C. and 5 ft-lb on a 3.2 mm bar specimen, a tensile elongation less than or equal to 2% when tested in accordance with D638 at 5 mm/min at break on a Type I bar specimen, and the composition achieves a p(FTP) of at least 0.85 for normal V0 of at 1.2 mm according to UL 94 (2019).

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