公开(公告)号：US12104140B2

公开(公告)日：2024-10-01

申请号：US18333514

申请日：2023-06-12

申请人： CHANGZHOU UNIVERSITY

发明人： Wenyan Huang ,  Li Jiang ,  Bibiao Jiang ,  Qimin Jiang ,  Hongjun Yang ,  Xiaoqiang Xue ,  Qiujie Sun

IPC分类号： C11D3/30 ,  C11D1/00

CPC分类号： C11D1/008

摘要： The present disclosure relates to a polymerizable surfactant with reducibility and a preparation method thereof. The acid anhydride is reacted with a long-chain fatty alcohol to obtain an intermediate of an anhydride monoester, and then the obtained intermediate is reacted with the hydrochloride of dimethylaminohalogenated alkane, and a polymerizable surfactant with reducibility is obtained by post-processing. The polymerizable surfactant can not only play a role as a reactive emulsifier and copolymerize with monomers to obtain a soap-free emulsion, but also form a redox initiation system with peroxide, and conduct redox emulsion polymerization at room temperature. The soap-free emulsion synthesized by the polymerizable surfactant synthesized can greatly reduce the energy consumption in production, and can carry out one-step emulsion polymerization at normal temperature or low temperature to obtain an environment-friendly emulsion with a branched structure, thereby obtaining coatings with excellent water resistance, weather resistance, and impact resistance.

公开(公告)号：US11377508B2

公开(公告)日：2022-07-05

申请号：US17414969

申请日：2020-12-29

申请人： CHANGZHOU UNIVERSITY

发明人： Wenyan Huang ,  Di Zhu ,  Bibiao Jiang ,  Xiaoqiang Xue ,  Hongjun Yang ,  Li Jiang ,  Qimin Jiang

IPC分类号： C08F20/20 ,  C08L33/14 ,  C08F2/32 ,  C08F4/40 ,  C08F120/20

摘要： Temperature-responsive poly(2-hydroxyethyl methacrylate) (PHEMA) and a preparation method thereof are disclosed. In the preparation method, with a system consisting of benzoyl peroxide (BPO) (an oxidant) and 2-methyl-N-[3-(methyl-phenyl-amino)-propyl]-acrylamide (MPAEMA) or 2-methyl-N-[3-(methyl-phenyl-amino)-propyl]-propionamide (MEMA) (a reducing agent monomer) as a redox initiation system, water and toluene as media, a nonionic surfactant as an emulsifier, and 2-hydroxyethyl methacrylate (HEMA) as a polymerization monomer, polymerization is conducted at room temperature and atmospheric pressure to obtain the PHEMA. An alcohol solution of the PHEMA has an upper critical solution temperature (UCST). The method has the advantages of simple and stable polymerization system, low polymerization cost, easy operation, mild conditions, small impact on the environment, and low energy consumption. Moreover, a molecular weight and UCST of a product are controllable within a specified range.

公开(公告)号：US11866539B2

公开(公告)日：2024-01-09

申请号：US17188760

申请日：2021-03-01

申请人： Changzhou University

发明人： Wenyan Huang ,  Bibiao Jiang ,  Xiaoqiang Xue ,  Hongjun Yang ,  Qimin Jiang

IPC分类号： C08F2/26 ,  C08F18/08 ,  C08F20/18 ,  C08F293/00 ,  C08F118/08 ,  C08F112/08 ,  C08F120/14 ,  C08F120/18 ,  C08F20/14

CPC分类号： C08F293/005 ,  C08F2/26 ,  C08F18/08 ,  C08F112/08 ,  C08F118/08 ,  C08F120/14 ,  C08F120/18 ,  C08F20/14 ,  C08F2438/02 ,  C08F18/08 ,  C08F2/26 ,  C08F112/08 ,  C08F2/26 ,  C08F2/26 ,  C08F18/08 ,  C08F20/18 ,  C08F2500/01

摘要： A process for preparing an ultra-high molecular weight polymer via emulsion polymerization at the room/indoor temperature includes using persulfate as initiator, water as medium, anionic surfactant as emulsifier, sodium bicarbonate as pH regulator, styrene, (meth) acrylate or vinyl acetate as monomer, which is subjected to a free radical polymerization at room temperature and the normal pressure. The ultra-high molecular weight polymers may have weight average molecular weights larger than 1,000,000 g/mol. The monomer conversion may be above 85% after reacting for 1˜6 hours. The process may be carried out at room temperature and normal pressure without the addition of other assist initiators. There temperature and pressure of the reaction may not be controlled, and the molecular weight and molecular weight distribution may be adjusted and controlled in a wider range.

公开(公告)号：US11814451B2

公开(公告)日：2023-11-14

申请号：US17935573

申请日：2022-09-26

申请人： CHANGZHOU UNIVERSITY

发明人： Wenyan Huang ,  Bibiao Jiang ,  Li Jiang ,  Hongjun Yang ,  Qimin Jiang ,  Xiaoqiang Xue ,  Di Zhu

IPC分类号： C08F120/20

CPC分类号： C08F120/20

摘要： The present disclosure may generally relate to the field of polymer synthesis and provide a method for preparing branched poly(2-hydroxyethyl methacrylate) at room temperature by inverse emulsion polymerization. The method may include: using benzoyl peroxide as an oxidant, and 2-methyl-N-[3-(methyl-phenyl-amino)-propyl]-acrylamide as a reductant monomer to form a redox initiation system, water, and toluene as media, a nonionic surfactant as an emulsifier, 2-hydroxyethyl methacrylate as a monomer, reacting at room temperature and normal pressure to obtain branched poly(2-hydroxyethyl methacrylate). In the present disclosure, the polymerization system may be simple and stable, and the synthesis and purification of the reductant monomer may be simple, greatly reducing the polymerization cost. The reaction may not need temperature control and pressure control, with low energy consumption, easy operation, and less impact on the environment. The obtained branched poly(2-hydroxyethyl methacrylate) may have a high molecular weight. The molecular weight and a branching degree may be adjusted in a wide range. The method may be of great significance to the theoretical research and large-scale application of branched poly(2-hydroxyethyl methacrylate).

公开(公告)号：US11674108B2

公开(公告)日：2023-06-13

申请号：US17936932

申请日：2022-09-30

申请人： CHANGZHOU UNIVERSITY

发明人： Wenyan Huang ,  Li Jiang ,  Bibiao Jiang ,  Qimin Jiang ,  Hongjun Yang ,  Xiaoqiang Xue ,  Qiujie Sun

IPC分类号： C11D3/30 ,  C11D1/00

CPC分类号： C11D1/008

摘要： The present disclosure relates to a polymerizable surfactant with reducibility and a preparation method thereof. The acid anhydride is reacted with a long-chain fatty alcohol to obtain an intermediate of an anhydride monoester, and then the obtained intermediate is reacted with the hydrochloride of dimethylaminohalogenated alkane, and a polymerizable surfactant with reducibility is obtained by post-processing. The polymerizable surfactant can not only play a role as a reactive emulsifier and copolymerize with monomers to obtain a soap-free emulsion, but also form a redox initiation system with peroxide, and conduct redox emulsion polymerization at room temperature. The soap-free emulsion synthesized by the polymerizable surfactant synthesized can greatly reduce the energy consumption in production, and can carry out one-step emulsion polymerization at normal temperature or low temperature to obtain an environment-friendly emulsion with a branched structure, thereby obtaining coatings with excellent water resistance, weather resistance, and impact resistance.

公开(公告)号：US11377511B2

公开(公告)日：2022-07-05

申请号：US17414980

申请日：2020-12-29

申请人： CHANGZHOU UNIVERSITY

发明人： Wenyan Huang ,  Qiujie Sun ,  Bibiao Jiang ,  Xiaoqiang Xue ,  Hongjun Yang ,  Li Jiang ,  Qimin Jiang

IPC分类号： C08F212/08 ,  C08F220/14 ,  C08F220/18 ,  C07C219/08

摘要： A reducing agent monomer for preparing a styrene-acrylic emulsion by an oxidation-reduction reaction at room temperature and a synthesis method thereof are disclosed. Maleic anhydride (MAH) and dimethylethanolamine (DMEA) are used as raw materials to synthesize the reducing agent monomer: 4-(2-(dimethylamino)ethoxy)-4-oxobut-2-enoic acid, and the synthesis method involves inexpensive easily-available raw materials, simple synthesis conditions, and easy purification. With the synthesized reducing agent monomer as a reducing agent, potassium persulfate (KPS) as an oxidizing agent, water as a dispersion medium, sodium dodecyl sulfate (SDS) as an emulsifier, and styrene, butyl acrylate (BA), and methylmethacrylate (MMA) as comonomers, free-radical microemulsion polymerization is conducted at room temperature to obtain a styrene-acrylic emulsion. In the synthesis of the styrene-acrylic emulsion, a monomer conversion rate is high, and a styrene-acrylic emulsion with a high molecular weight and a branched structure can be obtained at room temperature.