公开(公告)号：WO2004106428A2

公开(公告)日：2004-12-09

申请号：PCT/US2004/016328

申请日：2004-05-25

Applicant: FINA TECHNOLOGY, INC. ,  CHEVILLARD, Cyril ,  SOSA, Jose, M. ,  GRIFFITH, Aron, T. ,  REIMERS, Jay

Inventor： CHEVILLARD, Cyril ,  SOSA, Jose, M. ,  GRIFFITH, Aron, T. ,  REIMERS, Jay

IPC: C08L

CPC classification number: C08F112/08 ,  C08F279/02 ,  C08F212/08

Abstract: It has been discovered that improved polystyrene products may be obtained by polymerizing styrene in the presence of at least one multifunctional initiator, at least one chain transfer agent, and at least one cross-linking agent. The presence of the multifunctional initiator tends to cause more branched structures in the polystyrene. A mathematical model that helps optimize the levels of these additives for given molecular weights, melt flow indices (MFIs) and zero shear viscosities (η 0 ) has also been discovered.

Abstract translation: 已经发现，通过在至少一种多官能引发剂，至少一种链转移剂和至少一种交联剂的存在下聚合苯乙烯可以获得改进的聚苯乙烯产物。 多官能引发剂的存在倾向于在聚苯乙烯中引起更多的支化结构。 还发现了有助于优化给定分子量，熔体流动指数（MFI）和零剪切粘度（eta0）的这些添加剂水平的数学模型。

公开(公告)号：WO2004018522A2

公开(公告)日：2004-03-04

申请号：PCT/US2003/024954

申请日：2003-08-07

Applicant: FINA TECHNOLOGY, INC.

Inventor： BERTI, Douglas, A. ,  SOSA, Jose ,  GRIFFITH, Aron, T.

IPC: C08F

CPC classification number: B01D3/06 ,  C08F6/005 ,  Y10S159/10

Abstract: The present invention provides an apparatus and method of reducing volatiles in a mass processable polymer. The apparatus comprises a multi-chambered devolatilizer having first and second collectors contained therein. In one embodiment, the invention provides a method that includes passing the mass processable polymer stream from a polymerization process to a first devolatilizer. The method continues by passing the polymer stream from the first devolatilizer to the multi-chambered devolatilizer. The apparatus and method allows for the production of a polymer having less than 100 ppm of volatiles.

Abstract translation: 本发明提供一种在可加脂聚合物中还原挥发物的装置和方法。 该设备包括多室脱挥器，其中包含第一和第二收集器。 在一个实施方案中，本发明提供了一种方法，其包括将可加工聚合物流从聚合过程传递到第一脱挥发物。 该方法通过使聚合物流从第一脱挥发物流入多室脱挥发剂而继续。 该装置和方法允许生产具有小于100ppm挥发物的聚合物。