Invention Grant
- Patent Title: Process for producing polystyrene foam particles having a high density
- Patent Title (中): 生产高密度聚苯乙烯泡沫颗粒的方法
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Application No.: US11910533Application Date: 2006-04-05
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Publication No.: US08168096B2Publication Date: 2012-05-01
- Inventor: Markus Allmendinger , Klaus Hahn , Joachim Ruch
- Applicant: Markus Allmendinger , Klaus Hahn , Joachim Ruch
- Applicant Address: DE Ludwigshafen
- Assignee: BASF SE
- Current Assignee: BASF SE
- Current Assignee Address: DE Ludwigshafen
- Agency: Connolly Bove Lodge & Hutz LLP
- Priority: DE102005015891 20050406
- International Application: PCT/EP2006/061349 WO 20060405
- International Announcement: WO2006/106120 WO 20061012
- Main IPC: B29C47/36
- IPC: B29C47/36
Abstract:
A process for producing polystyrene foam particles having a bulk density in the range from 40 to 400 g/l by extrusion of a polystyrene melt comprising carbon dioxide and/or water as blowing agent through a nozzle and underwater pelletization, wherein the underwater pelletization is carried out at a pressure in the range 1-30 bar.
Public/Granted literature
- US20090065960A1 PROCESS FOR PRODUCING POLYSTYRENE FOAM PARTICLES HAVING A HIGH DENSITY Public/Granted day:2009-03-12
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