THERMOPLASTIC COMPOSITION
    6.
    发明申请

    公开(公告)号:US20240368400A1

    公开(公告)日:2024-11-07

    申请号:US18285687

    申请日:2022-04-04

    Abstract: The present invention relates to a thermoplastic composition comprising, based on the weight of the composition, (A) from 50-65 wt. % of aromatic polycarbonate, (B) from 20-40 wt. % of polyester comprising or consisting of poly(butylene terephthalate), (C) from 1-10 wt. % of impact modifier, (D) from 5-15 wt. % of glass fibres, (E) from 0-5 wt. % of further components, wherein the sum of the components (A)-(E) is 100 wt. % and wherein the composition has a notched Izod impact strength determined in accordance with ISO 180-1A at a temperature of 23° C. of at least 10 kJ/m2, a tensile modulus determined in accordance with ISO 527 at a temperature of 23° C. of at least 4.0 GPa, a tensile strength determined in accordance with ISO 527 at a temperature of 23° C. of at least 75 MPa and a melt volume rate determined in accordance with ISO 1133 (2505° C., 5 kg) of at least 7.0 cc/10 min.

    COMPOSITION COMPRISING POLYCARBONATE AND POLY BUTYLENE TEREPHTHALATE

    公开(公告)号:US20230067257A1

    公开(公告)日:2023-03-02

    申请号:US17797615

    申请日:2021-03-19

    Inventor: Roshan Kumar Jha

    Abstract: The present invention relates to a composition comprising at least 60 wt. % aromatic polycarbonate and at most 40 wt. % of polyester comprising poly(butylene terephthalate), based on the combined amounts of aromatic polycarbonate and polyester, from 1-10 wt. % of impact modifier, based on the weight of the composition, wherein the composition comprises the aromatic polycarbonate and the polyester, the aromatic polycarbonate has an endcap level of at least 75 mol % and the aromatic polycarbonate comprises melt polycarbonate.

    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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