Invention Publication
EP2794673A1 VERFAHREN ZUR HERSTELLUNG VON EXPANDIERBAREN, PARTIKELFÖRMIGE ADDITIVE ENTHALTENDEN STYROLPOLYMEREN
审中-公开
用于生产可扩展的，颗粒状的含添加剂的苯乙烯聚合物
- Patent Title: VERFAHREN ZUR HERSTELLUNG VON EXPANDIERBAREN, PARTIKELFÖRMIGE ADDITIVE ENTHALTENDEN STYROLPOLYMEREN
- Patent Title (English): Method for producing expandable styrene polymers containing particulate additives
- Patent Title (中): 用于生产可扩展的，颗粒状的含添加剂的苯乙烯聚合物
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Application No.: EP12810201.9Application Date: 2012-12-17
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Publication No.: EP2794673A1Publication Date: 2014-10-29
- Inventor: SPIES, Patrick , HESSE, Pascal , SCHMIED, Bernhard , SEDA, Libor , OSTERMANN, Rainer , BRAUN, Frank , HAVERKEMPER, Gregor , LEHNEN, Uwe-Johannes , HAHN, Klaus , HOLOCH, Jan
- Applicant: BASF SE
- Applicant Address: 67056 Ludwigshafen DE
- Assignee: BASF SE
- Current Assignee: BASF SE
- Current Assignee Address: 67056 Ludwigshafen DE
- Priority: EP11194873 20111221
- International Announcement: WO2013092468 20130627
- Main IPC: C08F2/18
- IPC: C08F2/18 ; C08J9/00 ; C08J9/20
Abstract:
The invention relates to a method for producing expandable styrene polymers containing particulate additives, said method comprising the following steps: a) producing prepolymer pellets by means of a first suspension polymerization of an aqueous suspension containing styrene monomers and particulate additives; b) separating the prepolymer pellets; c) optionally dividing the prepolymer pellets into fractions of different particle size and selecting one or more fractions for subsequent steps; d) producing an aqueous suspension of the prepolymer pellets and performing at least one second suspension polymerization in the presence of blowing agent and while metering additional monomers.
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