Infrared transparent polycarbonate composition

    公开(公告)号:US12286525B2

    公开(公告)日:2025-04-29

    申请号:US17639131

    申请日:2020-09-04

    Abstract: The present invention relates a polycarbonate composition comprising polycarbonate, acid stabiliser and at least one anthraquinone based colorant having at least one hydroxyl group, wherein the composition has a transmission of at least 80% in an infrared light wavelength range of from 760-1120 nm, wherein transmission is determined on an injection moulded plaque having a thickness of 2 mm prepared by injection moulding the composition at a maximum temperature of 320° C. and at a residence time of 10 minutes. Preferably the composition has a transmission of at most 10% in the visible light wavelength range of from 380-740 nm.

    POLYCARBONATE COMPOSITION
    3.
    发明申请

    公开(公告)号:US20250026929A1

    公开(公告)日:2025-01-23

    申请号:US18716723

    申请日:2022-12-02

    Inventor: Sijun Li Dave Wang

    Abstract: Disclosed herein is a thermoplastic composition comprising, based on the total weight of the composition (A) from 85-97 wt. % of aromatic polycarbonate, (B) from 3-12 wt. % of a core-shell impact modifier wherein the core is comprised of silicone and the shell comprised of acrylate, (C) from 0.01-1.5 wt. % of a flame retardant, (D) from 0.01-2 wt. % of anti-drip agent, wherein the sum of components (A)-(D) is at least 95 wt. % of the total weight of the composition, and wherein the composition is selected to have a melt volume rate of from 5-20 cm3/10 min. measured in accordance with ISO 1133 (300° C., 1.2 kg), and a UL flame retardancy rating of V0 at 1.2 mm, and a notched Izod Impact strength of at least 35 kJ/m2 at a temperature of −50° C. measured in accordance with ISO 180/A on injection moulded test bars of 80×10×3 mm.

    INFRARED TRANSPARANT POLYCARBONATE COMPOSITION

    公开(公告)号:US20220289943A1

    公开(公告)日:2022-09-15

    申请号:US17639131

    申请日:2020-09-04

    Abstract: The present invention relates a polycarbonate composition comprising polycarbonate, acid stabiliser and at least one anthraquinone based colorant having at least one hydroxyl group, wherein the composition has a transmission of at least 80% in an infrared light wavelength range of from 760-1120 nm, wherein transmission is determined on an injection moulded plaque having a thickness of 2 mm prepared by injection moulding the composition at a maximum temperature of 320° C. and at a residence time of 10 minutes. Preferably the composition has a transmission of at most 10% in the visible light wavelength range of from 380-740 nm.

    AUTOMOTIVE INTERIOR PART WITH LOW ODOR

    公开(公告)号:US20240425699A1

    公开(公告)日:2024-12-26

    申请号:US18211957

    申请日:2023-06-20

    Inventor: Sijun Li Xinjun Di

    Abstract: The present invention relates to an automotive interior article comprising or consisting of a thermoplastic composition, said composition comprising, based on the weight of the composition, (A) from 85-99 wt. % of aromatic polycarbonate, (B) from 1.0-10 wt. % of un-modified polyolefin elastomer, (C) from 0.1-5 wt. % of a copolymer comprising ethylene and glycidyl (meth)acrylate moieties, (D) from 0-5 wt. % of further component(s), wherein i) the sum of components (A)-(D) is 100 wt. %, ii) component (D) does not comprise polyester, iii) the thermoplastic composition is selected to have a sensory impression of smell determined in accordance with VDA 270-B3 of at most 3.0.

    TRANSPARENT BRANCHED POLYCARBONATE

    公开(公告)号:US20210206915A1

    公开(公告)日:2021-07-08

    申请号:US17059750

    申请日:2019-06-04

    Abstract: A method for preparing a modified polycarbonate comprising i) providing a polycarbonate prepared by the melt transesterification of a bisphenol and a diaryl carbonate preferably having a Fries branching level of from 750 to 2000 ppm, ii) combining said polycarbonate and from 0.10-0.75 wt. %, based on the amount of polycarbonate, of a modifier, iii) reacting said modifier and said polycarbonate in molten state at a temperature of from 250-300° C. and a reaction time of at least 30 seconds so as to form the modified polycarbonate, wherein said modifier is a styrene-(meth)acrylate copolymer containing glycidyl groups and having i) from 250 to 500 gram epoxy groups per mol and ii) a weight average molecular weight of from 3000 to 8500 g/mol, and wherein said modified polycarbonate has a transmittance of at least 85% and a haze of at most 5% as determined in accordance with ASTM D1003-13 on an injection moulded sheet having a thickness of 3 mm.

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