148 results about "Allyl methacrylate" patented technology

The invention discloses a preparation method for a high-slump-retention polycarboxylate water reducer. The preparation method comprises the following steps of: esterifying methoxylpolyethylene glycol monomethyl ethers with different molecular weights with methacrylic acid and a mixed polymerization inhibitor for a period of time under the action of a catalyst and at a certain temperature, then adding allyl alcohol in one time, further esterifying in the same conditions to obtain an esterified macromonomer MP containing crosslinking monomer allyl methacrylate; then performing aqueous solution polymerization on the MP, unsaturated sulfonate, (meth)acrylate unsaturated monomers and a chain transfer agent in a low-temperature condition and within a redox initiation system; and finally adding caustic soda liquid to neutralize, so as to obtain the polycarboxylate water reducer with a certain concentration. The high-slump-retention polycarboxylate water reducer prepared by the preparation method disclosed by the invention is a high-performance water reducer which is prepared at a low temperature by virtue of a molecular structure design, as well as is high in slump retention, excellent in dispersing performance, good in adaptability, simple in process, pollution-free, low in energy consumption, and easy to realize industrialized production.

The invention belongs to the technical field of antifouling material processing and relates to a method for preparing an antifouling material with surface of spherically raised microstructure which is formed by direct film forming. The antifouling material prevents marine growth from adhering to the surfaces of the ship and marine structures under marine environment. The method is characterized by first utilizing hydrogen-containing silicone oil and allyl methacrylate for hydrosilylation to synthesize a silicone component containing polymerizable double bonds, carrying out free radical copolymerization on the silicone component and acrylonitrile and acrylate monomers to form acrylate resin mixed liquor hinged with silicone gel particles, mixing the mixed liquor with resins and then coating films, thus obtaining the antifouling material. The mixed resin material has the characteristic of low surface energy. The characteristic of spherically raised microstructure is formed, thus improving the hydrophobic property of the antifouling material, so that the antifouling material prevents marine organisms from being contaminated. With the hydrophobic property being improved, the antifouling material reduces the possibility of organism adhesion, has no devastating impacts on the environment and has good application prospect, reduced surface energy, strong capability of preventing adhesion of diatom, simple and easily controlled preparation process and low cost.

A high-solid content pure acrylate elastic emulsion used for preparing coatings for the outer walls of buildings is prepared by adopting a core-shell emulsion polymerization method. The formula of theelastic emulsion consist of the following components: 4-13% of methyl methacrylate, 7-24% of butyl acrylate, 7.5-15% of acrylonitrile, 1-5% of allyl methacrylate, 6-17% of shell monomer: methyl methacrylate, 12-24% of butyl acrylate, 7.5-15% of acrylonitrile, 1-3% of methacrylic acid, 1-5% of emulsifier, 1-3% of persulfate and 35% of water. Compared with the prior art, the prepared coatings for the outer walls have the advantages of strong water resistance and contamination resistance, good elasticity, less cracked shape of coating films, saved painting manpower and the like.

The invention provides silver ink with a good metal printing effect and a printing process using the silver ink. The printing process comprises the steps that first, a coated surface of a white cardboard with a single side coated is coated with water-soluble varnish or UV (ultraviolet) varnish, images and texts are printed with well mixed gravure silver ink in a gravure manner, and finally, a layer of water-soluble varnish or UV varnish is printed on an image and text area with the gravure silver ink. The gravure silver ink is formed by blending the following materials in percentage by weight: 60-68% of silver powder, 24-30% of n-propyl acetate, 1-3% of methyl methacylate, 1-3% of butyl acrylate, 1-2% of methacrylic acid, 1-2% of N-hydroxymethyl acrylamide, 0.5-1% of allyl methacrylate, 0.5-1% of isooctyl thioglycolate, 0.2-0.5% of alkylphenol ethoxylates sodium sulfate, 1-2% of water-resistant agents and 0.1-0.5% of drying agents. By means of the silver ink and the printing process, a metal ink layer has a refraction effect, the metal effect is more obvious and an optimal metal effect is achieved.

Disclosed is a positive electrode for secondary batteries, which can achieve high output properties, cycle properties and safety performance. The positive electrode for secondary batteries is characterized by comprising a current collector and an electrode active material layer which is laminated on the current collector and comprises a positive electrode active material comprising manganese and a binder, wherein the binder comprises a constituent unit derived from a (meth) acrylic acid ester monomer, a constituent unit derived from an vinyl monomer having an acid component, a constituent unit derived from an a,ss-unsaturated nitrile monomer, and a constituent unit derived from a monomer having a crosslinkable group, the content of the constituent unit derived from a vinyl monomer having an acid component in the binder is 1.0 to 3.0 mass%, and a constituent unit derived from allyl acrylate or a constituent unit derived from allyl methacrylate is contained as the constituent unit derived from a monomer having a crosslinkable group.

The invention discloses an active free radical soap-free emulsion polymerization reaction, a prepared crosslinkable segmented copolymer thereof and application of the copolymer. The copolymer is prepared through the following steps: under the protection of nitrogen gas or argon gas, mixing an allyl methacrylate monomer, other monomers, a compound with a structural formula (I), a catalyst and a ligand according to a certain mol ratio, stirring, reacting at the temperature of 40 to 80 DEG C for 5 to 20 hours, and purifying to obtain the copolymer. Other monomers are selected from one or more in an acrylic compound, a methacrylic compound and a styrene compound; the catalyst is selected from one of the chloride or the bromide of copper, iron, nickel or ruthenium; and the ligand is selected from one of 2, 2'-dipyridyl, 4, 4'- di(5-nonyl)dipyridyl, N, N, N', N'-tetramethylethylenediamine, pentamethyldiethylenetriamine, hexamethyltriethylenetetramine or methenamine. The invention also discloses the application of the compound with the structural formula (I) as an emulsifier and an initiator.

The invention provides a tackifier with a structure shown as a formula (I), wherein R1 is selected from methyl, ethyl or phenyl; R2 is hydrogen; R3 is selected from cyclopentenyl, cyclohexenyl, 3-cyclohexene ethyl, 4-cyclohexene ethyl, 5-bicycloheptenyl, 4-cyclooctenyl, 4-cyclooctenyl ethyl, 1,5-bicyclooctenyl or norbornylene ethyl; R4 is selected from methyl methacrylate, allyl methacrylate or glycidyl methacrylate; each of a, b and c is more than or equal to 1; a+b+c is more than or equal to 20 and less than or equal to 70. The tackifier disclosed by the invention is capable of obviously improving the bonding effect between silicone rubber and hard bonding resin base materials.

The invention discloses high-ductility modified hard asphalt, which is prepared from the following raw materials in parts by weight: 130 to 140 parts of petroleum asphalt, 10 to 14 parts of methyl silicone rubber powder, 18 to 22 parts of methyl vinyl silicone rubber powder, 11 to 15 parts of modified kaolin, 5 to 9 parts of barium metaborate, 12 to 15 parts of sulfated castor oil, 5 to 8 parts of trimellitic anhydride, 2 to 5 parts of alkylphenol ethoxylate, 3 to 6 parts of allyl methacrylate and 4 to 8 parts of sodium thioglycollate. The invention also discloses a preparation method of the high-ductility modified hard asphalt. The prepared modified hard asphalt has high ductility, and has good high-temperature stability and low-temperature anti-cracking performance; important market values and social values are realized.

The invention provides a water-resistant white latex which is composed of the following components in parts by weight: 700-1050 parts of polyvinyl acetate, 300-350 parts of vinyl acetate, 120-145 parts of polyvinyl alcohol, 60-100 parts of dibutyl phthalate, 20-40 parts of diethylene glycol dibenzoate, 10-15 parts of octanol, 30-45 parts of isopropanol, 10-25 parts of allyl methacrylate, 5-10 parts of glycol bis methacrylate, 3-7 parts of toluene diisocyanate, 35-50 parts of sodium bicarbonate, 1400-1500 parts of water, 40-50 parts of emulsifier 5-9 parts of composite initiator, 20-32 parts of hydroxymethyl acrylamide, 10-15 parts of waxy corn starch and 2-7 parts of sodium hypochlorite. The water-resistant white latex does not need formaldehyde or any other solvent, and has the advantages of environment friendliness, high heat stability, short primary drying time, excellent water resistance, excellent binding strength, excellent curing time, excellent comprehensive properties and the like.

The invention discloses a butylbenzene modified zero-ammonia acrylic acid waterproof mortar emulsion and a preparation method thereof, and waterproof mortar. The waterproof mortar emulsion comprises 100 parts of deionized water, 25-35 parts of styrene, 50-60 parts of butyl acrylate, 1-5 parts of hydroxyethyl acrylate, 1-3 parts of hydroxyethyl methacrylate, 0.5-3 parts of methacrylic acid, 0.1-0.5part of allyl methacrylate, 0.1-0.5 part of a silane coupling agent, 55-65 parts of a styrene-butadiene emulsion, 1-10 parts of an emulsifier, 0.1-1 part of an initiator and 0.1-2 parts of sodium hydroxide. The waterproof mortar emulsion has excellent bonding strength and flexural and compressive strength, is ammonia-free and low-odor, and has good flexibility; and the preparation method is simple in process, high in controllability, low in equipment requirements and low in cost.

The invention provides strong white latex. The strong white latex comprises the following components in parts by weight: 900 parts of polyvinyl acetate, 330 parts of vinyl acetate, 130 parts of polyvinyl alcohol, 85 parts of dibutyl phthalate, 30 parts diethylene glycol dibenzoate, 13 parts of octanol, 37 parts of isopropanol, 19 parts of allyl methacrylate, 8 parts of glycol dimethacrylate, 5 parts of toluene diisocynate, 41 parts of sodium bicarbonate, 1460 parts of water, 46 parts of an emulsifying agent, 8 parts of an initiator, 27 parts of hydroxymethyl acrylamide, 13 parts of waxy corn starch and 5 parts of sodium hypochlorite. The environmental-friendly performance of the strong white latex is fundamentally improved; meanwhile, the strong white latex has excellent representation on indexes of thermal stability, initial drying time, water resistance, bonding strength and curing time and has excellent overall performance.

The invention provides a preparation method of white latex. The method comprises the following steps: taking water and vinol, mixing and increasing the temperature; taking an emulgator, adding the emulgator and residual water to the solution under the condition of stirring, then slowly adding vinyl acetate and an initiator, increasing the temperature and preserving heat; cooling; after that adding residual vinyl acetate and residual initiator; adding the emulgator and polyvinyl acetate; adding sodium bicarbonate, dibutyl phthalate, diethylene glycol dibenzoate, octanol and isopropanol; adding residual emulgator, allyl methacrylate, glycol dimethacrylate, toluene diisocynate, N-hydroxymethyl acrylamide, waxy maize starch and sodium hypochlorite to obtain the white latex. The content of vinyl acetate in the white latex prepared by the preparation method is greatly reduced, the environmental protection property of a product is improved fundamentally, and the white latex is superior in combination property.

The invention discloses a super-strong slump retaining agent. The super-strong slump retaining agent is composed of following raw materials: a, isopentenol polyoxyethylene ether, b, acrylic acid or methylacrylic acid or a mixture thereof, c, ethyl acrylate or propyl acrylate or a mixture thereof, d, allyl methacrylate, e, ammonium persulfate or potassium persulfate, and f, sodium methallyl sulfonate, wherein the mol ratio of the raw materials is as follows: a:b:c:d:f=1:(1.5-2.5):(1.5-2):(0.05-0.15):(0.3-0.6); the use amount of the e accounts for 0.5%-1.0% of the total weight of a, b and c. According to the slump retaining agent, the initial water-reducing rate is not influenced and the time-dependent change amount of the concrete slump degree is obviously improved; the loss of the slump degree can be not generated in three hours; the requirements of concrete agitating and transporting, pumping, pouring technical processes, and the high-strength requirements can be completely met; the super-strong slump retaining agent has good workability.

The invention relates to an acrylate resin solution for a water latex paint and its preparation method. The invention is characterized in that the acrylate resin solution for the water latex paint mainly comprises butyl cellosolve, allyl methacrylate, ethyl acrylate, methyl methacrylate, acrylic acid, methacrylic acid-2-ethylhexonate, azo-diformaldehyde pentanenitrile, tert-dodecyl mercaptan, etc. A coating prepared from the acrylate resin solution for the water latex paint has the characteristics of high glossiness, an excellent surface state, good water resistance, yellowing resistance, etc.

The invention relates to a preparation method of a composition with skin tightening effect. The preparation method comprises the following steps of A: weighing a klamath blue-green algae extractive, a chlamydomonas nivalis extractive, ethanol, a wild soybean seed extractive, a methyl methacrylate/ethylene glycol dmethylacrglate cross-linked polymer or a allyl methacrylate cross-linked polymer, uniformly mixing, and then heating to obtain a-phase liquid; B: weighing a cell enabling compound, an undaria pinnatifida extractive, trehalose and deionized water, and uniformly stirring to obtain b-phase liquid; C: mixing the a-phase liquid and the b-phase liquid to obtain a mixed solution c; D: weighing a padina pavonica thallus extractive and the mixed solution c, uniformly mixing and stirring to obtain a mixed solution d; and E: loading the mixed solution d into a freeze-drying glass bottle, carrying out freeze-drying to obtain freeze-dried powder, sealing in a vacuum environment to obtain the freeze-dried powder of the composition with the skin tightening effect. The composition prepared through the method disclosed by the invention has the advantages of obvious effect, good coexistence among active matters, stable quality and long retention period.