公开(公告)号：US20060009574A1

公开(公告)日：2006-01-12

申请号：US11223521

申请日：2005-09-09

申请人： Huub Aert ,  Joan Vermeersch ,  Etienne Thillo ,  Jos Huybrechts

发明人： Huub Aert ,  Joan Vermeersch ,  Etienne Thillo ,  Jos Huybrechts

IPC分类号： C08K3/00

CPC分类号： C09D11/106 ,  C08F2/22 ,  C08F2/38 ,  C08F120/14 ,  C08F2438/03 ,  C09D11/107 ,  C08F212/06 ,  C08F220/54 ,  C08F220/44 ,  C08F212/08

摘要： A method has been disclosed of preparing ultrafine hydrophobic latex particles of polymers and copolymers by free radical emulsion polymerization in a water-based system, making use therefor, in order to polymerize or copolymerize monomers or monomer mixtures respectively, of at least one compound selected from the group consisting of dimers and cobalt complexes, acting as a chain transfer agent (CTA), wherein said latex particles have an average particle size of less than 100 nm, being more than 10% lower than if prepared in the absence of said CTA, characterized in that said polymerization is conducted in a water-based reaction in the presence of a chain transfer agent and of a surfactant, wherein said surfactant is present in a concentration versus said monomer or monomer mixture of from 5 up to 25% by weight for a non-ionic surfactant or from 0.05 up to 10% by weight for an ionic surfactant, more particularly a surfactant in a concentration below twice its critical micelle concentration.

公开(公告)号：US20050020787A1

公开(公告)日：2005-01-27

申请号：US10922179

申请日：2004-08-19

申请人： Huub Aert ,  Joan Vermeersch ,  Etienne Thillo ,  Jos Huybrechts

发明人： Huub Aert ,  Joan Vermeersch ,  Etienne Thillo ,  Jos Huybrechts

IPC分类号： C08F2/00 ,  C08F2/22 ,  C08F2/24 ,  C08F2/38

CPC分类号： C08F2/24 ,  C08F2/22 ,  C08F2/38

摘要： A method has been disclosed of preparing ultrafine hydrophobic latex particles of polymers and copolymers by free radical emulsion polymerization in a water-based system, making use therefor, in order to polymerize or copolymerize monomers or monomer mixtures respectively, of at least one compound selected from the group consisting of dimers and cobalt complexes, acting as a chain transfer agent (CTA), wherein said latex particles have an average particle size of less than 100 nm, being more than 10% lower than if prepared in the absence of said CTA, characterized in that said polymerization is conducted in a water-based reaction in the presence of a chain transfer agent and of a surfactant, wherein said surfactant is present in a concentration versus said monomer or monomer mixture of from 5 up to 25% by weight for a non-ionic surfactant or from 0.05 up to 10% by weight for an ionic surfactant, more particularly a surfactant in a concentration below twice its critical micelle concentration.

摘要翻译： 已经公开了一种通过在水基体系中通过自由基乳液聚合制备聚合物和共聚物的超细疏水性胶乳颗粒的方法，其用途是分别使单体或单体混合物聚合或共聚至少一种选自 由二聚体和钴配合物组成的组，用作链转移剂（CTA），其中所述胶乳颗粒具有小于100nm的平均粒度，比不存在所述CTA时制备的胶乳颗粒小10％以上， 其特征在于所述聚合在链转移剂和表面活性剂的存在下在水基反应中进行，其中所述表面活性剂以相对于所述单体或单体混合物的浓度存在，其浓度为5至25重量％，用于 非离子表面活性剂或0.05至10重量％的离子表面活性剂，更特别是浓度低于其临界胶束浓度两倍的表面活性剂 ation。