Invention Grant
- Patent Title: Process for the manufacture of flame retardant polycarbonate particles and flame retardant polycarbonate particles prepared thereby
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Application No.: US16629115Application Date: 2018-09-07
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Publication No.: US10913827B2Publication Date: 2021-02-09
- Inventor: Zeljko Kuzeljevic , Viswanathan Kalyanaraman , Rahul Patil , Kapil Inamdar , Zachary Anderson , William E. Hollar , Sasi Sethumadhavan Kannamkumarath
- 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
- International Application: PCT/US2018/049897 WO 20180907
- International Announcement: WO2019/060146 WO 20190328
- Main IPC: C08J3/14
- IPC: C08J3/14 ; C08J3/20 ; C08K5/5333 ; C08K5/5399

Abstract:
A process for the manufacture of polycarbonate particles is disclosed herein. The process includes combining a first solution including a polycarbonate and a phosphorus-containing flame retardant or a flame retardant polycarbonate, and an organic solvent with a second solution including a surfactant and an aqueous solvent substantially immiscible with the organic solvent, under conditions of shear and temperature effective to provide an emulsion. At least a portion of the organic solvent is removed from the emulsion to provide an aqueous slurry having a plurality of particles, wherein the particles include the polycarbonate and the phosphorus-containing flame retardant or the flame retardant polycarbonate.
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