公开(公告)号：US20160200840A1

公开(公告)日：2016-07-14

申请号：US14993632

申请日：2016-01-12

Applicant: Carnegie Mellon University

Inventor： Krzysztof Matyjaszewski ,  Pawel Chmielarz ,  Dominik Konkolewicz ,  Pawel Krys ,  Xiangcheng Pan ,  Valerie Williams

IPC: C08F120/28

CPC classification number: C08F120/28 ,  C08F4/40 ,  C08F4/50 ,  C08F220/54 ,  C08F2438/01

Abstract: A process for polymerizing radically (co)polymerizable monomers at a temperature between −10° C. and 110° C. in an aqueous system comprising one or more radically (co)polymerizable monomer(s) is disclosed, and includes a molar excess of a ligand forming a soluble transition metal complex with an added transition metal salt that participates in a reversible reduction-oxidation cycle with one of an added site specific functional initiator and a dormant polymer chain having a radically transferable atom or group. The initial soluble catalyst complex concentration in the higher oxidation state is less than or equal to 2500 ppm. The reaction is conducted in the presence of an activator regenerator. The mole fraction of the soluble lower activator oxidation state transition metal formed by action of the activator regenerator, to transition metal in a higher deactivator oxidation state is less than 10%. The formed polymer chains have a dispersity of less than 1.5.

Abstract translation: 公开了在包含一种或多种自由基（共）可聚合单体的水性体系中，在-10℃至110℃之间的温度下聚合自由基（共）可聚合单体的方法，并且包括摩尔过量的 与添加的过渡金属盐形成可溶性过渡金属络合物的配体，其与加入的位点特异性官能引发剂和具有可自由基转移的原子或基团的休眠聚合物链之一参与可逆还原 - 氧化循环。 较高氧化态的初始可溶性催化剂络合物浓度小于或等于2500ppm。 反应在活化剂再生器的存在下进行。 通过活化剂再生器的作用形成的可溶性低活化剂氧化态过渡金属与较高失活剂氧化态的过渡金属的摩尔分数小于10％。 形成的聚合物链的分散性小于1.5。

公开(公告)号：US11174325B2

公开(公告)日：2021-11-16

申请号：US16475886

申请日：2018-01-11

Applicant: CARNEGIE MELLON UNIVERSITY

Inventor： Marco Fantin ,  Pawel Chmielarz ,  Yi Wang ,  Francesca Lorandi ,  Krzysztof Matyjaszewski

IPC: C08F2/38 ,  C08F2/26 ,  C08F4/10 ,  C08F4/40 ,  C08F220/18

Abstract: Systems and methods for Atom Transfer Radical Polymerization (ATRP) emulsion polymerization are provided. The ATRP emulsion polymerization comprises a suspending medium, a dispersed medium, a surfactant, a transition metal compound in a higher oxidation state, a ligand, and an ATRP initiator. The transition metal compound is capable of forming a catalyst complex in a presence of the ligand. The catalyst complex is soluble in the suspending medium and is capable of forming an ionic complex with the surfactant. The ionic complex is capable of moving between the suspending medium and the dispersed medium. A portion of the transition metal compound in the higher oxidation state within a portion of the catalyst complex is reduced by a physical and/or a chemical procedure thereby initiating a polymerization of one or more radically (co)polymerizable monomers by reaction with the initiator.

公开(公告)号：US09982070B2

公开(公告)日：2018-05-29

申请号：US14993632

申请日：2016-01-12

Applicant: Carnegie Mellon University

Inventor： Krzysztof Matyjaszewski ,  Pawel Chmielarz ,  Dominik Konkolewicz ,  Pawel Krys ,  Xiangcheng Pan ,  Valerie Williams

IPC: C08F4/40 ,  C08F4/50 ,  C08F120/28 ,  C08F220/54

CPC classification number: C08F120/28 ,  C08F4/40 ,  C08F4/50 ,  C08F220/54 ,  C08F2438/01

Abstract: A process for polymerizing radically (co)polymerizable monomers at a temperature between −10° C. and 110° C. in an aqueous system comprising one or more radically (co)polymerizable monomer(s) is disclosed, and includes a molar excess of a ligand forming a soluble transition metal complex with an added transition metal salt that participates in a reversible reduction-oxidation cycle with one of an added site specific functional initiator and a dormant polymer chain having a radically transferable atom or group. The initial soluble catalyst complex concentration in the higher oxidation state is less than or equal to 2500 ppm. The reaction is conducted in the presence of an activator regenerator. The mole fraction of the soluble lower activator oxidation state transition metal formed by action of the activator regenerator, to transition metal in a higher deactivator oxidation state is less than 10%. The formed polymer chains have a dispersity of less than 1.5.