Invention Grant
- Patent Title: Weatherable transparent high heat polycarbonate copolymer composition
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Application No.: US16665580Application Date: 2019-10-28
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Publication No.: US11572468B2Publication Date: 2023-02-07
- Inventor: Mark Adrianus Johannes Van Der Mee , Roland Sebastian Assink , Hendrikus Petrus Cornelis Van Heerbeek
- Applicant: SABIC GLOBAL TECHNOLOGIES B.V.
- Applicant Address: NL Bergen op Zoom
- Assignee: SABIC GLOBAL TECHNOLOGIES B.V.
- Current Assignee: SABIC GLOBAL TECHNOLOGIES B.V.
- Current Assignee Address: NL Bergen op Zoom
- Agency: Cantor Colburn LLP
- Priority: EP18203108 20181029
- Main IPC: C08L69/00
- IPC: C08L69/00 ; G02B1/111 ; G02B1/14 ; C08K5/00 ; C08K5/42 ; C08K5/521 ; C08K5/524

Abstract:
A thermoplastic composition comprising: a copolycarbonate comprising bisphenol A (BPA) carbonate units and 10-50 mol % of second carbonate units different from the BPA carbonate units; a poly(carbonate-arylate ester) copolymer comprising BPA carbonate units and 5-50 mol % of monoaryl arylate ester units; and optionally a BPA homopolycarbonate; wherein the thermoplastic composition has at least one of: a Vicat B120 softening temperature of 155° C. or greater; or a yellowness index of less than 10 on a plaque having a thickness of 3 mm and molded at a temperature of 360° C. for 5 minutes; or an increase in yellowness index of less than 5 after 600 hours of weathering per ISO 11341 on a molded plaque having a thickness of 1 mm.
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