-
公开(公告)号：US20240343844A1
公开(公告)日：2024-10-17
申请号：US18701427
申请日：2022-10-21
发明人： Shinji SUGIHARA , Hirofumi OGAWA
摘要： A polyvinyl ether-based polymer useful as a gellant, having a structural unit represented by formula (2):
where R1 represents a linear or branched alkanediyl group having 1 to 5 carbon atoms, R2 represents a single bond or a linear or branched alkanediyl group having 1 to 5 carbon atoms, X represents —C(═O)OH, —C(═O)O-M+, or —C(═O)O−, M+ represents a counter ion, and n is an integer of 0 to 3.-
公开(公告)号：US20210002468A1
公开(公告)日：2021-01-07
申请号：US16976955
申请日：2018-03-07
发明人： Shinji SUGIHARA , Takao NISHIURA , Kento FUJIURA
IPC分类号： C08L29/10 , C08F2/22 , C08F261/06
摘要： Provided are core/shell type polymeric particles including a shell and a core, in which the particles can be produced by a method using neither a surfactant nor a high-molecular-weight azo initiator, exhibit satisfactory dispersibility in aqueous medium, and are useful as, for instance, a dispersant, a metal-protecting stabilizer, or a metal adsorbent. A core/shell type polymeric particle including a shell including a hydrophilic vinyl ether polymer (a) and a core including a hydrophobic polymer (b).
-
公开(公告)号：US20220332874A1
公开(公告)日：2022-10-20
申请号：US17639555
申请日：2020-09-01
发明人： Shinji SUGIHARA , Masahiro ENDO
IPC分类号： C08F275/00
摘要： A core-shell type polymeric particle may exhibit good dispersibility in an aqueous medium and excellent flame retardance. A core-shell type polymeric particle may include a core including a hydrophobic polymer (c) and a shell including a copolymer having a repeating unit (a) derived from vinyl phosphonic acid or a vinyl phosphonic acid ester and a repeating unit (b) of formula (α): wherein Ra is H or a methyl group, Rb is a single bond or a carbonyl group, and ring Q1 is a substituted or unsubstituted 4 to 10 membered nitrogen-containing heterocycle.
-
4.发明申请公开(公告)号：US20210122847A1
公开(公告)日：2021-04-29
申请号：US17257664
申请日：2019-06-14
发明人： Shinji SUGIHARA , Masahiro ENDO
摘要： [Object] To provide a method for producing a vinyl ether polymer containing a hydrocarbon group in a stable and efficient manner, wherein decomposition of the monomer and generation of polyacetal are suppressed.
[Means for solving problem] The method for producing a vinyl ether polymer containing a hydrocarbon group according to the present invention comprises the step of polymerizing vinyl ether represented by the following formula (1): wherein R1 represents an aliphatic hydrocarbon group having 1 to 10 carbons or an alicyclic hydrocarbon group having 3 to 10 carbons, in the presence of water as a polymerization solvent and an organic azo-based compound as a radical polymerization initiator, under pH of 6 or more.-
公开(公告)号：US20180179305A1
公开(公告)日：2018-06-28
申请号：US15579301
申请日：2016-06-29
发明人： Shinji SUGIHARA , Norihiro YOSHIDA
IPC分类号： C08F16/26 , C08K3/18 , C09D11/00 , C09D129/10 , C09J129/10
CPC分类号： C08F16/26 , C08F4/04 , C08F116/14 , C08K3/18 , C09D11/00 , C09D129/10 , C09J129/10
摘要： A method for producing a hydroxyl group-containing vinyl ether polymer according to the present invention includes: a step of radical polymerizing at least one vinyl ether selected from vinyl ether having a hydroxyl group represented by the following formula (2): wherein R7 represents an alkylene group which is straight-chained, branched or comprises an alicyclic structure, and p is 1, 2, or 3, in the presence of water as a polymerization solvent and an azo compound represented by the following formula (1) as a polymerization initiator: wherein R1 to R4 each independently represent a hydrogen atom or an alkyl group and R5 and R6 each independently represent an alkoxy group optionally having a substituent group or an alkyl amino group optionally having a substituent group.
-
公开(公告)号：US20180155477A1
公开(公告)日：2018-06-07
申请号：US15570807
申请日：2016-05-02
发明人： Shinji SUGIHARA
IPC分类号： C08F216/14 , C08F218/08
CPC分类号： C08F216/1416 , C08F218/08 , C08F2216/1433 , C08F2800/10
摘要： An alkenyl ether-vinyl ester copolymer contains a repeating unit derived from a hydroxyl group-containing alkenyl ether represented by the following formula (1), and a repeating unit derived from a vinyl ester represented by the following formula (2): where R1, R2 and R3 each independently represents a hydrogen atom or an alkyl group having from 1 to 4 carbon atoms, R4 represents a linear or branched alkylene group having from 2 to 4 carbon atoms; R5 represents an acyl group having from 1 to 20 carbon atoms; and p represents an integer of from 1 to 3. The alkenyl ether-vinyl ester copolymer exhibits temperature responsiveness showing a change in hydrophilicity and hydrophobicity at a prescribed temperature as a critical point and has a lower critical solution temperature to water of from 1° C. to 99° C.
-
公开(公告)号：US20180118869A1
公开(公告)日：2018-05-03
申请号：US15572384
申请日：2016-05-02
发明人： Shinji SUGIHARA
IPC分类号： C08F293/00 , C08F16/26 , C08F18/08
CPC分类号： C08F293/005 , C08F4/40 , C08F16/26 , C08F18/08 , C08F216/1416 , C08F218/08 , C08F2438/03 , C08F2800/10
摘要： To provide a method for producing a polymer that is capable of providing an alkenyl ether polymer having a molecular weight, a molecular weight distribution, and a composition that are controlled, with a vinyl ether having a hydroxyl group, and a block copolymer thereof. To provide a polymer obtained by the method as a macro chain transfer agent capable of performing reversible addition fragmentation chain transfer polymerization. Livingness can be imparted to radical polymerization of a hydroxyl group-containing vinyl ether by performing the radical polymerization in the presence of a particular RAFT agent and a radical polymerization initiator, and a block copolymer with another radically polymerizable vinyl monomer can be obtained by using the resulting living polymer as a macro chain transfer agent capable of performing reversible addition fragmentation chain transfer polymerization.
-
8.发明申请公开(公告)号：US20180371127A1
公开(公告)日：2018-12-27
申请号：US15780843
申请日：2016-12-14
发明人： Norihiro YOSHIDA , Shinji SUGIHARA
IPC分类号： C08F116/12 , C08F2/06 , C08F2/16 , C08F4/04
摘要： [Object] To provide a method for producing a vinyl ether polymer having a hydroxyl group on the side chain, wherein the vinyl ether polymer having a low viscosity and excellent workability and processability is produced in a simple and efficient method.[Means for solving problem] The present invention relates to a method for producing a vinyl ether polymer having a hydroxyl group on the side chain, characterized in that vinyl ether comprising a hydroxyl group is subjected to radical polymerization by using an oil-soluble azo polymerization initiator, in the presence of a mixed solvent comprising water and an organic solvent selected from alcohol or cyclic ether radical polymerization.
-
-
-
-
-
-
-
搜索结果
8 条记录 (耗时 0.013 秒)
