84 results about "Ethylene Glycol Methacrylate" patented technology

The invention relates to novel crosslinkable copolymers which are obtainable by (a) copolymerizing at least two different hydrophilic monomers selected from the group consisting of N,N-dimethyl acrylamide (DMA), 2-hydroxyethyl acrylate (HEA), glycidyl methacrylate (GMA), N-vinylpyrrolidone (NVP), acrylic acid (AA) and a C1-C4-alkoxy polyethylene glycol (meth)acrylate having a weight average molecular weight of from 200 to 1500, and at least one crosslinker comprising two or more ethylenically unsaturated double bonds in the presence of a chain transfer agent having a functional group; and (b) reacting one or more functional groups of the resulting copolymer with an organic compound having an ethylenically unsaturated group.

The present invention is directed to a water-based acrylic emulsion dispersant to be used as a grind resin to incorporate inorganic pigment into a pigment dispersion for a coating composition. The acrylic emulsion dispersant is the reaction product of butyl methacrylate, butyl acrylate, styrene, methyl ether polyethylene glycol methacrylate, polyethylene glycol methacrylate, and polyphosphoric acid. The present invention is also directed to a method of preparing the acrylic emulsion dispersant. In this method, the butyl methacrylate, butyl acrylate, and styrene are combined with water to establish a first reaction blend. Similarly, the methyl ether polyethylene glycol methacrylate and the polyethylene glycol methacrylate are combined with water to establish a second reaction blend. Next, the first and second reaction blends are polymerized to form an intermediate emulsion polymer containing a hydroxyl group from the functionality of the polyethylene glycol methacrylate. Finally, the hydroxyl group from the polyethylene glycol methacrylate is reacted with polyphosphoric acid to form the acrylic emulsion dispersant which is utilized for efficient wetting and grinding of the pigment.

The invention relates to a method for preparing an ultraviolet(UV)-curable polyisocyanate modified superbranched epoxy acrylate, which comprises the following steps of: heating maleopimaric acid tri glycidyl ester, maleopimaric acid and a catalyst for esterification reaction to obtain rosin-based superbranched resin; cooling, and adding epoxy chloropropane, water and a catalyst for reaction to obtain superbranched epoxy resin; adding crylic acid, a catalyst and a polymerization inhibitor for reaction to obtain superbranched epoxy acrylic resin; and reacting the superbranched epoxy acrylic resin with ethylene glycol methacrylate terminated para toluene diisocyanate, a catalyst and a polymerization inhibitor to obtain the final product. Compared with the prior art, the method has the advantages that: rosinyl is introduced into superbranched polyester, and the hardness, strength and other special properties of the resin are improved and the curing speed is improved by utilizing the special rigid condensed ring structure of the rosin. The cured product has higher ultraviolet resistance; and by adjusting the using amount of raw materials, superbranched polyester for ultraviolet-curable coatings meeting different coating requirements can be prepared.

There are provided a resin composition, which has optical properties such as a high refractive index, has excellent restorability and scratch resistance, and has good adhesion to a substrate, and, when utilized as an optical member (lens) used, for example, in screens for projection televisions or the like, can satisfy various property requirements, and a cured product of the resin composition. The resin composition comprises: an oligomer component comprising urethane (meth)acrylate, produced by reacting a bisphenol A polyalkoxydiol, an organic diisocyanate and a hydroxyl-containing mono(meth)acrylate, and a bisphenol A epoxy (meth) acrylate; a monomer component comprising a phenoxy polyethylene glycol (meth)acrylate and a bisphenol A polyethoxydiol di(meth)acrylate; and a photopolymerization initiator. The resin composition has a refractive index of not less than 1.55 after resin curing.

The invention provides a latex type amphiphilic polymer resin, which is formed by polymerizing unsaturated acid alkyl, methyl methacrylate, styrene, butyl methacrylate, butyl acrylate, hydroxypropyl methacrylate, ethylene glycol methacrylate, acrylamide, diacetone-acryloamide and other monomers. The paint which takes the latex type amphiphilic polymer resin as a main film forming material and combines with inorganic polymer stuffing integrates with decorative property, humidifying property, permeability, heat preservation, condensation prevention, water and alkali resistance, bacterium resistance and so on, and can prevent the paint film from dropping off due to multiple kinds of seepage and water condensation of a wall body, so that the paint film is more durable; in addition, the paint has no organic solvent, and is safe and environment friendly.

The invention discloses a fungus detection fluorescent dyeing liquid and a use thereof. The fungus detection fluorescent dyeing liquid comprises an independent dyeing liquid A and an independent re-dyeing liquid B. The dyeing liquid A comprises, by weight, 0.02-0.043% of a fluorescent brightener, 1-10% of potassium hydroxide, 10-20% of dimethyl sulfoxide, 0-5% of glycerin and 65-87% of water. The re-dyeing liquid B comprises, by weight, 0.1-0.5% of Evans blue and 99.50-99.90% of water. The invention discloses a use of the fungus detection fluorescent dyeing liquid. The invention provides a novel fast fungus infection detection product. The product can be used for detecting various fungi which may exist in a fresh or frozen clinical sample and paraffin and ethylene glycol methacrylate-coated tissue.

A polishing composition includes a copolymer and an abrasive. The copolymer has a constitutional unit expressed as the following formula (I) and at least one of constitutional units expressed as the following formulas (II) to (IV). Methoxypolyethylene glycol methacrylate etc. are used as monomers for forming the constitutional unit of the formula (I), stearyl methacrylate etc. are used as monomers for forming the constitutional unit of the formula (II), polypropylene glycol methacrylate etc. are used as monomers for forming the constitutional unit of the formula (III), and styrene etc. are used as monomers for forming the constitutional unit of the formula (IV).

The invention discloses a low-cost polyester polycarboxylic acid water reducer, and relates to a building material. The low-cost polyester polycarboxylic acid water reducer is prepared from the following steps: an esterification reaction: conducting an esterification reaction on polyethylene glycol and methacrylic acid under effects of an inhibitor hydroquinone and a catalyst p-toluene sulphonic acid to generate esterification macromonomer polyethylene glycol methacrylate and water, wherein silica gel is used as an absorbent in the reaction to absorb water generated in the esterification reaction to proceed the reaction, and stopping the reaction when esterification rate reaches 40-60%; and a polymerization graft reaction: conducting isothermal reaction on the esterification macromonomer polyethylene glycol methacrylate with mixed monomer MAA, AM and SMAS in the presence of a chain transfer agent thioglycolic acid, an initiator ammonium persulfate and an initiating assistant hydrogen peroxide, cooling to room temperature after the reaction, and adding NaOH to adjust a pH value to 7. Compared with the prior art, the low-cost polyester polycarboxylic acid water reducer protected by the invention has advantages of low cost and good water reducing performance.

The invention discloses an initiation system for photo-polymerization of active free radicals of methacrylate monomers. The initiation system comprises organic halide initiators, aromatic tertiary amine reducing agents and benzaldehyde photocatalysts with substituents. Visible light (such as a household 23W energy-saving lamp) can be used as a light source for the initiation system, and polymerization of the active free radicals of the methacrylate monomers can be initiated at the room temperature. The free radicals of methyl methacrylate (MMA), polyethylene glycol methacrylate (PEGMA) and methacrylic acid benzyl ester (BnMA) monomers and the like can be polymerized under preferred matching conditions. Polymers prepared by the aid of the initiation system are macromolecular initiators, chain extension reaction is successfully carried out, and accordingly block polymers can be obtained. The initiation system has the advantages that catalysts are low in toxicity, and polymerization reaction conditions are mild; the cost of polymerization reaction is lowered to a great extent owing to the usage of organic catalysts as compared with polymerization reaction catalyzed by transition metal complexes, and after-treatment working procedures can be reduced to a great extent.

The invention provides a soap free latex type amphiphilic polymer resin, which is formed by polymerizing unsaturated acid alkyl, styrene, methyl methacrylate, butyl methacrylate, butyl acrylate, hydroxypropyl methacrylate, ethylene glycol methacrylate, acrylamide, diacetone-acryloamide and other monomers. The paint which takes the soap free latex type amphiphilic polymer resin as a main film forming material and combines with multiple kinds of inorganic polymer stuffing integrates with decorative property, humidifying property, permeability, heat preservation, condensation prevention, water and alkali resistance, bacterium resistance and so on, and can prevent the paint film from dropping off due to multiple kinds of seepage and water condensation of a wall body, so that the paint film is more durable; in addition, the paint has no organic solvent, and is more safe and environment friendly.

The invention relates to a biological sample preparation method applicable to ultra-thin section and fluorescence imaging and belongs to the technical field of biological engineering. The method comprises the following steps of: fixing biological tissue which is marked by fluorescent protein by using 4 percent paraformaldehyde; after a sample is rinsed in a phosphate buffer solution (PBS) with concentration of 0.01 mol / L, performing gradient dehydration by using an ethanol solution, wherein dehydration concentration does not exceed 95 percent; and permeating and embedding the sample by using improved glycidyl methacrylate (GMA). An embedded biological sample which is prepared by the method has hardness for continuous ultra-thin section and can keep a fluorescence signal. The method is simple, low in cost and suitable for popularization in common laboratories.

The invention discloses an antibacterial and scrubbing-resistant waterborne coating for a glass door. The waterborne coating is characterized by being prepared from the following raw materials in parts by weight: 34-37 parts of waterborne epoxy emulsion, 13-15 parts of waterborne organosilicone emulsion, 20-24 parts of vinyl acetate / butyl acrylate emulsion, 2-4 parts of triethylene glycol monoethyl ether, 0.3-0.6 part of alkanolamine alkoxy titanate, 0.3-0.5 part of a flatting agent BYK-310, 0.1-0.2 part of nanobacteria cellulose, 0.2-0.4 part of white oil, 0.5-1.0 part of polyethylene glycol methacrylate, 0.4-0.6 part of tetrachloro isophthalonitrile, 0.3-0.5 part of fatty acid polyoxyethylene ether, 0.4-0.7 part of citral, 0.2-0.4 part of cuprous oxide, 3-5 parts of a modified titanium dioxide photocatalyst, 1-2 parts of pigment and 10-15 parts of deionized water. The coating for the glass door has the advantages of excellent water resistance, high hardness, scrubbing resistance and low film forming temperature as well as excellent performance, low cost, strong adhesion after curing and no peeling and is non-toxic and environmentally friendly; by adding a plurality of organic, inorganic, and natural antibacterial agents, the antibacterial property of the coating is enhanced; and by adding modified titanium dioxide photocatalyst, the air can be effectively purified, bacteria can be killed and the deodorant effect, taste removal effect, antifouling effect and the self-cleaning function are achieved.

The invention discloses a polymer dispersant for a liquid disperse dye as well as a synthesis method and application of the polymeric dispersant. The synthesis method comprises the following steps: weighing three monomers, namely octadecyl methacrylate, acrylic acid and methoxy polyethylene glycol methacrylate, dissolving the monomers in isopropanol, uniformly conducting mixing, adding a formed mixture into a reactor, conducting stirring, and introducing nitrogen into a reaction flask to remove oxygen in the reactor; dissolving an initiator in acetone, when the temperature rises to 50-70 DEG C, dropwise adding the initiator solution through a micro-injection pump, and controlling the dropwise adding time to be 0.5-1.5 h; after dropwise adding the initiator, keeping the temperature at 75-85 DEG C and conducting reacting for 6-8 hours; adjusting the pH value of the system to 7.5-8.5, and conducting discharging; and performing post-treatment to obtain the polymer dispersant. The dispersant with the structure is relatively high in grinding efficiency when being used for preparing a liquid disperse dye, and the storage stability of the dye is relatively good.

The invention discloses a silicon hydrogel with medium water content and high oxygen permeability and a silicon hydrogel contact lens; and the silicon hydrogel is prepared by polymerization reaction of the following components, by mass: 10-60% of silicon-containing monomer, 10-60% of hydrophilic monomer, 0.1-10% of cross-linking agent, 0.1-10% of initiator and 30-60% of solvent. The silicon-containing monomer is one or a mixture of more than one of MCR-M11, TRIS, SIMAA2 and SIGMA. The hydrophilic monomer is one or a mixture of several of HEMA, NVP, methacrylic acid, methyl methacrylate and polyethylene glycol methacrylate. The preparation method comprises the following steps: uniformly mixing and stirring the components according to the formula ratio, injecting the mixture into a contact lens mold, and carrying out ultraviolet irradiation or thermal initiation polymerization to obtain the silicone hydrogel contact lens. Compared with the prior art, the silicon hydrogel provided by theinvention is medium in water content and large in oxygen permeation coefficient, and the contact lenses prepared from the silicon hydrogel are high in transparency, good in oxygen permeation and soft,meet the requirements of wearing comfort and formability of the contact lenses, and have good market prospects.

The present invention discloses a lectin-functionalized-hydrophilic-polymer-coated up-conversion fluorescence nanoparticle and application and a preparation method thereof. A preparation method of the fluorescence nanoparticle is as follows: SI-ATRP method is used for in situ polymerization of oligomeric ethylene glycol methacrylate (OEGMA) on up-conversion fluorescence nanoparticle surface to form a hydrophilic polymer shell, polymer side chain hydroxy groups are oxidized into aldehyde groups, and then the aldehyde groups are covalently-coupled with lectin N-terminals or side-chain amino groups for lectin fixation. The fluorescent particle is successfully applied to in-vitro and in-vivo experiments and in-situ labeling, imaging and difference identification of different cell surface membrane sugar, has the advantages of simple operation, high sensitivity, low background interference, low cytotoxicity, small tissue damage and the like, and has good prospects in biomedicine and clinical testing.

Provided are an organic-inorganic hybrid scaffold with surface-immobilized nano-hydroxyapatite, and a method for the fabrication thereof. The scaffold is fabricated by reacting an acid group present on a surface of nano-hydroxyapatite with a primary amine present on a surface of a polymer support in the presence of EDC (1-ethyl-3-dimethylaminopropyl carbodiimide) to immobilize nano-hydroxyapatite onto the surface of the polymer support. The surface of nano-hydroxyapatite is previously grafted with poly(ethylene glycol methacrylate phosphate) (PolyEGMP) having phosphonic acid functionality or with a polymer having carboxylic acid functionality.

The invention discloses a preparation method of a multi-targeted photodynamic therapy polymer carrier. The preparation method comprises the following steps of: firstly, preparing a thermosensitive prepolymer: carrying out reversible addition-fragmentation chain transfer polymerization on diethylene glycol dimethacrylate, polyethylene glycol methacrylate and methacrylic-2-ethyl hydroxyl as reactants to obtain the thermosensitive prepolymer; and secondly, by taking the thermosensitive prepolymer and silicon phthalocyanine dichloride as reactants, connecting the silicon phthalocyanine dichloride onto a thermosensitive prepolymer chain segment by a chemical bond method to obtain the multi-targeted photodynamic therapy polymer carrier. According to the preparation method disclosed by the invention, the multi-targeted photodynamic therapy polymer carrier is synthesized and is a water-soluble thermosensitive nano-carrier; the multi-targeted photodynamic therapy polymer carrier can be gathered in cells by regulating and controlling the temperature and a high-transparent retention effect of solid tumors in a targeted manner and further the photodynamic therapy is carried out; and singlet oxygen has quantum yield as high as 0.55 and can be used for further photodynamic therapy.

The invention relates to a production method and a use of an anion exchange online purification solid phase extraction monolithic column. The monolithic column adopts dimethylaminoethyl methacrylate as a monomer, ethylene glycol methacrylate as a cross-linking agent, n-propanol and PEG-400 as a pore foaming agent and azodiisobutyronitrile as an initiator. The production method comprises the following steps: carrying out ultrasonic mixing, degassing the obtained mixture, filling a stainless steel tube with the degassed mixture, sealing the stainless steel tube, and carrying out a reaction in 55-65DEG C water bath for 20-30h to obtain the poly(DMAEMA-co-EDMA) monolithic column. The monolithic column can be used for detecting and analyzing the residual of acidic pesticides in vegetables and fruits. The monolithic column polymerized on a stainless steel chromatographic column in an in-situ manner can tolerate a certain pressure, and is connected to an online purification and enrichment system to realize automation of the solid phase extraction purification. The monolithic column has the advantages of simple production method, continuous porous structure, convenient flow-out of a mobile phase, and obvious reduction of the mass transfer resistance, has a higher extraction efficiency and a lower column back pressure than traditional packed columns, and can be repeatedly used.

The invention discloses a temperature / pH double-sensitive high-strength nano composite hydrogel and a preparation method thereof. The preparation method comprises the following steps: (1) separating tunicin from Halocynthia roretzi Drasche and performing acidolysis on the tunicin to obtain tunicate nano cellulose (TCNCS); (2) adding hydroxypropyl methylcellulose (HPMC), polyethylene glycol methacrylate (PEGMA) and acrylic acid (AAC) into TCNCS suspension, mixing with an initiator, and placing the mixture in a constant temperature water bath to react for 24h to obtain the nano composite hydrogel product, and freeze-drying to obtain a solid product. The reaction is easy to operate and has mild conditions; and the nano composite hydrogel prepared by the preparation method has high-efficiencytemperature / pH double sensitivity and high strength, has good biocompatibility at the same time, and has wide application prospects in aspects of drug release systems, disease diagnosis, daily monitoring and the like in medical treatment and medicine fields.

The invention belongs to the field of coatings, and discloses a grafted dispersant, which is mainly prepared from a main chain monomer, a branched chain monomer, an initiator and a solvent, and the mass ratio of the main chain monomer to the branched chain monomer is (1-2): (1-15), the main chain monomer comprises a monomer containing an aromatic group and a monomer containing an acid-base group,and the branched chain monomer is at least one selected from polyethylene glycol monomethyl ether methacrylate, polyethylene glycol methacrylate, polypropylene glycol monomethyl ether methacrylate andpolypropylene glycol methacrylate. The grafted dispersant is low in production cost and excellent in dispersing performances, and can be used for preparing UV ink color paste with good stability.

The invention discloses a preparation method and application of a sewage purifying medium. The preparation method of the sewage purifying medium comprises the following steps: carrying out reaction on macromolecular microspheres and 2-bromoisobutyryl bromide under catalysis of 4-dimethylaminopyridine to prepare an initiator; adding cuprous bromide, 2-2dipyridyl and poly6-glycol methacrylate to react to obtain activated macromolecular microspheres; carrying out reaction on the macromolecular microspheres and carbonyldimidazole to obtain an activated polymer brush; and then carrying out lucifugal reaction on the polymer brush and bactericidal proteins and 4-dimethylaminopyridine. The method is simple in preparation process, and the prepared sewage purifying medium after surface modification by virtue of the macromolecular microspheres is good in hydrophilicity, can suspend on the surface of sewage, and is well contacted with sewage, so that heavy metals in the sewage are adsorbed, sterilized and disinfected by taking a lysozyme as a carrier protein. The medium is not soluble in water, can be easily separated from the sewage and can be recycled after post-treatment.

The invention discloses a 1, 4-dihydropyridine functional polymer and a preparation method thereof. The preparation method of the polymer comprises the following steps: (1) in an anhydrous organic solvent, uniformly mixing fatty aldehyde, ammonium acetate, acetoacetic acid ethylene glycol methacrylate, a 1, 3-diketone compound, a radical initiator and a catalyst to obtain a component A; and (2) removing oxygen in the component A system, carrying out a reaction to obtain a component B, and obtaining the 1, 4-dihydropyridine functional polymer from the component B through separation. Through analysis of antibacterial experiment results, the polymer has good antibacterial ability. The structure is shown as a formula I in the specification.

The invention discloses preparation and application of sulfonitride heavy metal ion chelating polymer microspheres, relating to the technical field of preparation of functionalized polymer materials and treatment of waste water including heavy metal ions. The sulfonitride heavy metal ion chelating polymer microsphere is synthesized by suspension polymerization with 4-vinylpyridine and polyethylene glycol methacrylate as polymerizing monomers and thiodiglycol dimethacrylate as a cross-linking agent; the cross-linked polymer microsphere contains sulfur and nitrogen functional ligands to enhancethe chelating removal effect for the heavy metal ions, achieve the polymerization and the chelating agent functionalization by one-step method and effectively avoid the release of a chelating agent; and the cross-linked polymer microsphere has excellent mechanical intensity and can be used for filling columns or beds to remove the heavy metal ions. The preparation method is a high-efficient, simple and feasible process flow, is not easy to cause the secondary pollution, and has the advantages of simple structure of required equipment, convenience for operation, low production cost, and easiness in controlling conditions.

The invention relates to the field of battery multi-layer composite diaphragms, and discloses a high-heat-resistance and high-strength three-layer co-extrusion diaphragm and a preparation method thereof. In the diaphragm, the upper layer and the lower layer are prepared from the following raw materials: a polymer matrix, a macromonomer and a high-temperature initiator; the middle layer is prepared from the following raw materials: polyethylene, a macromonomer and a high-temperature initiator; the polymer matrix comprises one or more of polyethylene glycol terephthalate, polybutylene terephthalate and poly (ethylene 2, 6-naphthalate); the macromonomer comprises one or more of polyethylene glycol methyl ether methacrylate, poly (ethylene glycol) methacrylate and poly (ethylene glycol) ether methacrylate. The specific matrix is adopted in the three layers, the special macromonomer is introduced, and a three-layer co-extrusion process is matched, so that the temperature difference between the pore closing temperature and the membrane breaking temperature of the diaphragm can be increased, and the diaphragm is endowed with relatively good mechanical strength, heat resistance, liquid absorption capacity and ionic conductivity.

The invention belongs to the technical field of materials and cables, and particularly relates to a medium-pressure water-tree-retardant crosslinked polyethylene cable material. The medium-pressure water-tree-retardant crosslinked polyethylene cable material is characterized by being composed of the following raw materials in parts by weight: low density polyethylene, medium density polyethylene, polypropylene, polyolefin elastomer, titanium dioxide, polyethylene wax or paraffin, carbon black, dicumyl peroxide, hydroxyethyl acrylate or hydroxyethyl methylacrylate, an antioxidant 168 or an antioxidant 1010, and dimethylaminoethyl methacrylate or ethylene glycol methacrylate or hydroxyethyl methacrylate, and a moisture-absorption compound. The cable material disclosed by the invention has the beneficial effects of easily available raw materials, low price, reasonable formula, simple manufacturing method and the like and is easy to prepare and easy for batch and scale production. The invention also discloses a preparation method of the cable material and a cable adopting the cable material. The cable disclosed by the invention has the beneficial technical effects of good water resistance, no water tree generation, more stable cable performance, high reliability and the like and is easy to produce.

The invention provides a polyamide-alginate fiber dialysis membrane and a preparation method thereof. The dialysis membrane is a hollow fiber membrane and is prepared from the following components inparts by weight: 25-30 parts of polyamide, 12-18 parts of alginate fibers, 5-10 parts of a copolymer of L-diethyl tartrate and polyethyleneimine, 5-10 parts of poly-2-methyl-2,3-epoxypropiorote ethylene glycol methacrylate, 2-8 parts of polylactic acid, 1-2 parts of diatomite, 1-5 parts of polyethylene glycol, 1-2 parts of hexanol or heptanol, 0.5-1 part of zinc oxide and 40-60 parts of dimethylsulfoxide, wherein for hollow fibers, the average inside diameter is 120-280 microns, and the wall thickness is 25-45 microns. The preparation method of the polyamide-alginate fiber dialysis membrane adopts a dry-wet method preparation process. The polyamide-alginate fiber dialysis membrane can effectively solve the technical problems that the biocompatibility is not ideal enough, and medium molecular substances such as beta 2-microglobulins cannot be eliminated and has an excellent application prospect.

The invention provides particulates containing methoxy cinnamate octyl. The particulate is prepared from that, by weight, 4-10 parts of methoxy cinnamate octyl, 0-0.3 part of CI60725 pigment, 4-10 parts of methyl methacrylate, 0.4-3 parts of two ethylene glycol methacrylate, 0.1-3 parts of two azo isobutyl cyanide, 0.1-0.5 part of polyving akohol, 0.1-0.5 part of hexadecyl alcohol and 0.1-0.5 partof lauryl sodium sulfate are added to 100 parts of deionized water. On the basis, the invention further provides a sunscreen composition of particulates containing methoxy cinnamate octyl and avobenzone, wherein the mass ratio of the particulates containing methoxy cinnamate octyl and the avobenzone is 1-10:1. The sunscreen composition solves the problem that the methoxy cinnamate octyl and the avobenzone cannot be combined, the photostability of the composition is obviously improved, at the same time, the stability of the avobenzone is also improved.

A polyvinylidene fluoride hydrophilic membrane preparation method belongs to the preparation field of membrane material. The invention provides the hydrophilic polyvinylidene fluoride hydrophilic membrane. According to the invention, a strong oxidizing property of ozone is utilized for treating polyvinylidene fluoride dissolved in N-methyl pyrrolidone by introducing peroxide groups; hydrophilic polyethylene glycol methacrylate (PEGMA) is prepared through graft polymerization adopting thermal initiation; and PVDF membrane with the hydrophilic property is prepared by a phase transmission method. Preparing microcapsules by the method does not need special cultivation methods and yeast used in the method has no biological activity. The preparation method can prepare the polyvinylidene fluoride separation membrane material with the hydrophilic property and uniform pore size distribution and has a good application prospect.

The invention discloses an initiation system for photo-polymerization of active free radicals of methacrylate monomers. The initiation system comprises organic halide initiators, aromatic tertiary amine reducing agents and benzaldehyde photocatalysts with substituents. Visible light (such as a household 23W energy-saving lamp) can be used as a light source for the initiation system, and polymerization of the active free radicals of the methacrylate monomers can be initiated at the room temperature. The free radicals of methyl methacrylate (MMA), polyethylene glycol methacrylate (PEGMA) and methacrylic acid benzyl ester (BnMA) monomers and the like can be polymerized under preferred matching conditions. Polymers prepared by the aid of the initiation system are macromolecular initiators, chain extension reaction is successfully carried out, and accordingly block polymers can be obtained. The initiation system has the advantages that catalysts are low in toxicity, and polymerization reaction conditions are mild; the cost of polymerization reaction is lowered to a great extent owing to the usage of organic catalysts as compared with polymerization reaction catalyzed by transition metal complexes, and after-treatment working procedures can be reduced to a great extent.

The invention relates to a preparation method of ultra violet (UV) light curing-type polymethyl siloxane with methacrylate structure-contained side groups. Through a Michael addition reaction betweenasymmetric diene acrylic acid-ethylene glycol methacrylate and amino silicone oil, the difference in activity of double bonds of the asymmetric diene is large, the acrylic structure is preferentiallyadded with amino groups, the methacrylic acid structure is successfully linked to side chains of methyl silicone oil, and structurally controllable methyl silicone oil with methacrylate structure-contained side groups is obtained. The reaction grafting rate is high; the preparation method is highly effective, gentle and controllable; a conventional compound photoinitiator is selected and applied onto a substrate for UV curing, and the coated substrate is rapidly cured to form a film at room temperature; the preparation method is clean and pollution-free; the complicated production of a silicone oil-modified photoinitiator is avoided; and the prepared organic silicon has the advantages of high temperature resistance, good weather resistance, good electrical insulation, excellent release effect, low surface tension and the like, and is widely applied to the industries such as release coating, coatings, leather auxiliaries, packaging and the like.