公开(公告)号：US20190292146A1

公开(公告)日：2019-09-26

申请号：US16439109

申请日：2019-06-12

申请人： KYOTO UNIVERSITY ,  ZEON CORPORATION

发明人： Fumiaki Bando ,  Shigeru Yamago

IPC分类号： C07C395/00 ,  C08F236/08 ,  C08F12/08 ,  C08F4/04 ,  C08F2/48 ,  C08F220/12 ,  C08F120/34 ,  C08F212/08 ,  C08F220/14 ,  C08F220/44 ,  C08F236/12 ,  C08F4/00 ,  C08F112/08 ,  C08F299/00

摘要： The present invention involves a radical polymerization initiator comprising an organotellurium compound represented by a formula (1), wherein R1 represents an alkyl group or the like, each of R2 and R3 independently represents a hydrogen atom or the like, and each of R4, R5, and R6 independently represents a hydrogen atom or the like.The present invention provides: a radical polymerization initiator that is useful for producing a polymer that includes a double bond at the molecular terminal; and a method for producing a polymer that utilizes the radical polymerization initiator.

公开(公告)号：US10689336B2

公开(公告)日：2020-06-23

申请号：US16439109

申请日：2019-06-12

申请人： KYOTO UNIVERSITY ,  ZEON CORPORATION

发明人： Fumiaki Bando ,  Shigeru Yamago

IPC分类号： C08F2/48 ,  C08F4/04 ,  C07C395/00 ,  C08F4/00 ,  C08F12/08 ,  C08F236/08 ,  C08F112/08 ,  C08F120/34 ,  C08F212/08 ,  C08F220/12 ,  C08F220/14 ,  C08F220/44 ,  C08F236/12 ,  C08F299/00

摘要： The present invention involves a radical polymerization initiator comprising an organotellurium compound represented by a formula (1), wherein R1 represents an alkyl group or the like, each of R2 and R3 independently represents a hydrogen atom or the like, and each of R4, R5, and R6 independently represents a hydrogen atom or the like. The present invention provides: a radical polymerization initiator that is useful for producing a polymer that includes a double bond at the molecular terminal; and a method for producing a polymer that utilizes the radical polymerization initiator.

公开(公告)号：US20190106524A1

公开(公告)日：2019-04-11

申请号：US16096825

申请日：2017-04-21

申请人： Kyoto University ,  OTSUKA CHEMICAL CO., LTD

发明人： Shigeru Yamago ,  Minoru Yamamoto

IPC分类号： C08F293/00

摘要： Provided are a method for producing a multibranched polymer that can produce a multibranched polymer having a narrow molecular weight distribution in a one-pot procedure and the multibranched polymer. A method for producing a multibranched polymer includes the step of polymerizing a first vinyl monomer having a polymerization-initiating group in an α-position of a vinyl bond and a second vinyl monomer free of polymerization-initiating group in an α-position of a vinyl bond by a living radical polymerization.

公开(公告)号：US20200048192A1

公开(公告)日：2020-02-13

申请号：US16608221

申请日：2018-04-23

申请人： Kyoto University ,  OTSUKA CHEMICAL CO., LTD.

发明人： Shigeru Yamago ,  Osamu Ito

IPC分类号： C07C395/00 ,  C08F4/06

摘要： An organic tellurium compound is disclosed having a versatility that, when used as a living radical polymerization initiator, it is applicable to polymerization of a vinyl monomer in an aqueous vehicle without using any surfactant or dispersant. The organic tellurium compound is represented by a general formula (1), where R1 and R2 each independently represent a hydrogen atom or an alkyl group having 1 to 8 carbon atoms, A represents an alkali metal atom or an alkaline earth metal atom, x=1 when A is monovalent, x=½ when A is divalent, and R3 is represented by a general formula (2), where in the general formula (2) R4 represents a hydrogen atom or an alkyl group having 1 to 8 carbon atoms, R5 and R6 each independently represent an alkylene group having 2 to 8 carbon atoms, and a represents an integer from 0 to 10.

公开(公告)号：US11427538B2

公开(公告)日：2022-08-30

申请号：US16608221

申请日：2018-04-23

申请人： Kyoto University ,  OTSUKA CHEMICAL CO., LTD.

发明人： Shigeru Yamago ,  Osamu Ito

IPC分类号： C07C395/00 ,  C08F4/06

摘要： An organic tellurium compound is disclosed having a versatility that, when used as a living radical polymerization initiator, it is applicable to polymerization of a vinyl monomer in an aqueous vehicle without using any surfactant or dispersant. The organic tellurium compound is represented by a general formula (1), where R1 and R2 each independently represent a hydrogen atom or an alkyl group having 1 to 8 carbon atoms, A represents an alkali metal atom or an alkaline earth metal atom, x=1 when A is monovalent, x=½ when A is divalent, and R3 is represented by a general formula (2), where in the general formula (2) R4 represents a hydrogen atom or an alkyl group having 1 to 8 carbon atoms, R5 and R6 each independently represent an alkylene group having 2 to 8 carbon atoms, and a represents an integer from 0 to 10.

公开(公告)号：US20240084049A1

公开(公告)日：2024-03-14

申请号：US17642067

申请日：2020-09-09

申请人： Kyoto University

发明人： Shigeru Yamago

IPC分类号： C08F4/12 ,  C08F120/06

CPC分类号： C08F4/12 ,  C08F120/06 ,  C08F2438/00

摘要： The present invention provides a stereocontrol catalyst for use in radical polymerization that is applicable to polymerization of a broad range of monomers and that enables polymerization with control of both molecular weight (molecular weight distribution) and stereoselectivity, a method for producing a polymer using the stereocontrol catalyst for use in radical polymerization, and an acrylic polymer. Provided is a stereocontrol catalyst for use in radical polymerization, containing: a rare-earth metal salt compound; and a hydroxy group-containing compound.

公开(公告)号：US10808065B2

公开(公告)日：2020-10-20

申请号：US16096825

申请日：2017-04-21

申请人： Kyoto University ,  OTSUKA CHEMICAL CO., LTD

发明人： Shigeru Yamago ,  Minoru Yamamoto

IPC分类号： C08F293/00 ,  C08F230/00 ,  C08F2/38 ,  C08F4/00

摘要： Provided are a method for producing a multibranched polymer that can produce a multibranched polymer having a narrow molecular weight distribution in a one-pot procedure and the multibranched polymer. A method for producing a multibranched polymer includes the step of polymerizing a first vinyl monomer having a polymerization-initiating group in an α-position of a vinyl bond and a second vinyl monomer free of polymerization-initiating group in an α-position of a vinyl bond by a living radical polymerization.