专利检索 ap:("Symyx Technologies, Inc.") AND inv:"LI, Yunxiao" 第 1 页

1.

发明授权
CONTROL AGENTS FOR LIVING-TYPE FREE RADICAL POLYMERIZATION, METHODS OF POLYMERIZING, EMULSIONS AND POLYMERS WITH SAME 有权
标题翻译：控制对于活性自由基聚合BY类型，方法进行聚合和聚合物乳液BY这意味着

公开(公告)号：EP1322674B1

公开(公告)日：2006-11-22

申请号：EP01973529.9

申请日：2001-09-26

申请人： Symyx Technologies, Inc.

发明人： CHARMOT, Dominique , CHANG, Han, Ting , LI, Yunxiao , HUEFNER, Peter

IPC分类号： C08F2/38 , C08F293/00 , C07C337/08

CPC分类号： C08F2/38

摘要： Control agents that have a nitrogen-nitrogen bond covalently bonded to a thiocarbonyl moiety are provided for living-type free radical polymerization of a wide variety of monomers. These control agents provide superior properties for control of the polymerization and/or the properties of the polymers obtained and/or the monomers that may be polymerized. In some embodiments, a bulky group is pendant off the activated thiocarbonyl portion of the control agents. Multifunctional control agents provide the opportunity for a variety of structurally unique polymers, including block copolymers, stars and hyper-branched polymers.

2.

发明公开
CONTROLLED FREE RADICAL EMULSION AND WATER-BASED POLYMERIZATIONS AND SEEDED METHODOLOGIES 审中-公开
标题翻译：可控自由基乳液聚合水性聚合和方法KEIM

公开(公告)号：EP1165625A1

公开(公告)日：2002-01-02

申请号：EP00916194.4

申请日：2000-03-08

申请人： Symyx Technologies, Inc.

发明人： KLAERNER, Gerrit , SAFIR, Adam , NIELSEN, Ralph, B. , JANDELEIT, Bernd , HUEFNER, Peter , LI, Yunxiao

IPC分类号： C08F2/22 , C08F2/38

CPC分类号： C08F220/58 , C08F4/00 , G01N33/54353

摘要： Nitroxides having an alpha-carbon atom with a destabilizing moiety are effective control agents for emulsion and water-based polymerizations, including the formation of block copolymers from a wide range of monomers. The nitroxide radicals may be used as a free radical or as an adduct with a residue from the initiator. The emulsions have living characteristics, including the re-initiation of polymer chains. Also, a seeded process for emulsions, which includes the step-wise addition of monomer is disclosed, providing access to a wide range of initiator types.