Invention Grant
- Patent Title: Process for manufacturing a densified polymer powder, and process of melt processing a densified polymer powder
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Application No.: US15518792Application Date: 2015-10-30
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Publication No.: US10596727B2Publication Date: 2020-03-24
- Inventor: William E. Hollar, Jr. , Robert Russell Gallucci , Franklin Ehrensbeck , Todd M. Loehr , Shankar Kollengodu Subramanian , Christopher Luke Hein , Qiying Jiang
- 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/IB2015/058424 WO 20151030
- International Announcement: WO2016/071817 WO 20160512
- Main IPC: B29B9/12
- IPC: B29B9/12 ; B29C48/00 ; B29B9/16 ; B29B9/08 ; B29B9/02 ; C08J3/12 ; C08J3/14 ; C08J3/20 ; C08K5/18 ; C08K5/526 ; B29K69/00 ; B29K105/00

Abstract:
Process for manufacturing a densified polymer powder comprising compressing a polymer feed that has a bulk density of less than or equal to 240 kg/m in a roll compactor comprising at least two compaction rolls to obtain a densified polymer material, wherein a gap between the two rolls is 0.5 to 10 mm, wherein the compaction rolls operate at a speed of 3 to 30 rpm, wherein an applied pressure of the roll compactor is 0.5 to 5 MPa, and milling the densified polymer material to obtain a densified polymer powder, wherein a bulk density of the densified polymer powder is greater than or equal to 250 kg/m3.
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