Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: The present invention relates to a method for preparing an ultraviolet (UV) curing polymethyl siloxane containing an acrylate structure: performing a Michael addition reaction with an amino silicone oil by means of an asymmetric diene acrylate ethylene glycol methacrylate, the double bond of asymmetric diene having a large difference in activity, and the acrylate structure preferentially undergoing addition with an amino group; thus, a methacrylic structure is successfully linked to a side chain of the methyl silicone oil, and a methyl silicone oil having a controllable structure and having a side group containing the methacrylate structure is prepared, the reaction having a high grafting rate; the described method is a high-efficiency, mild and controllable preparation method; a conventional compound photoinitiator is selected, and is coated on a substrate for UV curing, quickly curing at room temperature to form a film, and having the features of being clean and pollution-free.

Abstract: This invention discloses a process for preparing a branched polymer via emulsion polymerization at room temperature and is related to the field of polymer synthesis and preparation of functional polymers. A mixture of water as medium, anionic surfactant as emulsifier, sodium bicarbonate as pH regulator, the reductant monomer containing both polymerizable double bond and the reducing group combined with the persulfate as the oxidant to be useful as initiator, styrene, (meth) acrylate or vinyl acetate as monomer, is reacted to synthesize the branched polymers via a free radical in-situ emulsion polymerization at room temperature and ambient pressure. The monomer conversion can be above 85% in a range of about 10 mins to 10 hours of the reaction time. The process for preparing a branched polymer is carried out under the conditions of emulsion polymerization at room temperature and normal pressure without the addition or assistance of the branched monomer and other initiators.

Abstract: This invention discloses a process for preparing a branched polymer via emulsion polymerization at room temperature and is related to the field of polymer synthesis and preparation of functional polymers. A mixture of water as medium, anionic surfactant as emulsifier, sodium bicarbonate as pH regulator, the reductant monomer containing both polymerizable double bond and the reducing group combined with the persulfate as the oxidant to be useful as initiator, styrene, (meth) acrylate or vinyl acetate as monomer, is reacted to synthesize the branched polymers via a free radical in-situ emulsion polymerization at room temperature and ambient pressure. The monomer conversion can be above 85% in a range of about 10 mins to 10 hours of the reaction time. The process for preparing a branched polymer is carried out under the conditions of emulsion polymerization at room temperature and normal pressure without the addition or assistance of the branched monomer and other initiators.

Abstract: The invention discloses a process for preparing an ultra-high molecular weight polymer via emulsion polymerization at the room temperature, belonging to the fields of polymer synthesis. Persulfate as initiator, water as medium, anionic surfactant as emulsifier, sodium bicarbonate as pH regulator, styrene, (meth) acrylate or vinyl acetate as monomer, is subjected to a free radical polymerization at room temperature and the normal pressure. The ultra-high molecular weight polymers were successfully obtained, which the weight average molecular weight of the polymers were larger than 100×104 g/mol. The monomer conversion can be above 85% after the reaction was proceeded about 1˜6 hours. The process for preparing an ultra-high molecular weight polymer is carried out under the conditions of conventional free radical emulsion polymerization at the room temperature and normal pressure without the addition of other assist initiators.