公开(公告)号：WO2012044483A1

公开(公告)日：2012-04-05

申请号：PCT/US2011/052116

申请日：2011-09-19

申请人： DOW GLOBAL TECHNOLOGIES LLC ,  HULL, John, Wesley ,  KING, Bruce, A. ,  KRAM, Shari, Lynn ,  KEIFER, Joseph, J.

发明人： HULL, John, Wesley ,  KING, Bruce, A. ,  KRAM, Shari, Lynn ,  KEIFER, Joseph, J.

IPC分类号： C08F8/20 ,  C08C19/12

CPC分类号： C08F8/20 ,  C08C2/06 ,  C08C19/12 ,  C08F2800/20 ,  C08J9/12 ,  C08J9/149 ,  C08J2201/03 ,  C08J2203/06 ,  C08J2203/12 ,  C08J2203/14 ,  C08J2203/182 ,  C08J2203/202 ,  C08J2325/04 ,  C08J2353/02 ,  C08J2425/04 ,  C08J2453/02 ,  C08F297/04

摘要： Brominated styrene-butadiene copolymers are recovered from solutions in a halogenated solvent by an anti-solvent precipitation process. The precipitation process is performed by adding the anti-solvent to the brominated styrene-butadiene copolymer solution. By performing the precipitation using this specific order of addition, a denser product is obtained that is easier to dry. The recovered product shows a reduced tendency to act as a nucleating agent when it is used as a flame retardant additive in an extrusion foaming process.

摘要翻译： 溴化苯乙烯 - 丁二烯共聚物通过抗溶剂沉淀方法从卤代溶剂中的溶液中回收。 通过向溴化苯乙烯 - 丁二烯共聚物溶液中加入反溶剂来进行沉淀方法。 通过使用特定的添加顺序进行沉淀，得到更易于干燥的更致密的产物。 当在挤出发泡方法中用作阻燃添加剂时，回收的产品显示出作为成核剂的降低的趋势。