Invention Grant
- Patent Title: Preparing expandable styrene polymers
- Patent Title (中): 制备可膨胀苯乙烯聚合物
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Application No.: US13046154Application Date: 2011-03-11
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Publication No.: US08455559B2Publication Date: 2013-06-04
- Inventor: Wolfgang Ferstl , Jun Gao , Klaus Hahn , Pascal Hesse , Jan Holoch , Klaus-Dieter Hungenberg , Wolfram Husemann , Renata Jovanovic , Wolfgang Kasten , Olaf Kriha , Eckhard Neufeld , Michel Pepers , Birgit Reinhard , Bernhard Schmied , Rudolf Süttinger , Ping Zhang
- Applicant: Wolfgang Ferstl , Jun Gao , Klaus Hahn , Pascal Hesse , Jan Holoch , Klaus-Dieter Hungenberg , Wolfram Husemann , Renata Jovanovic , Wolfgang Kasten , Olaf Kriha , Eckhard Neufeld , Michel Pepers , Birgit Reinhard , Bernhard Schmied , Rudolf Süttinger , Ping Zhang
- Applicant Address: DE
- Assignee: BASF SE
- Current Assignee: BASF SE
- Current Assignee Address: DE
- Agency: Novak Druce Connolly Bove + Quigg LLP
- Main IPC: C08J9/20
- IPC: C08J9/20 ; C08J9/16 ; C08J9/00
Abstract:
The invention provides a process for preparing expandable styrene polymers which comprises the steps of: (a) adding an aqueous phase comprising a suspension stabilizer and an organic phase comprising styrene and an initiator to a reactor, (b) commencing the addition of a blowing agent at a styrene conversion in the range from 40 to 70% and adding the blowing agent over a period ranging from 30 to 60 minutes, (c) adding a stabilizer to stabilize the bead size distribution of the expandable styrene polymer at a styrene conversion in the range from 65 to 99%.
Public/Granted literature
- US20110224316A1 PREPARING EXPANDABLE STYRENE POLYMERS Public/Granted day:2011-09-15
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