109 results about "Butyl vinyl ether" patented technology

The invention discloses a synthesis method of 17alpha-hydroxyl progesterone, which comprises the steps of by taking 4-androstene-diketone as a starting raw material, carrying out vyanation via acetone cyanohydrin, protecting 3carbonyl by using triethyl orthoformate and ethyl alcohol, protecting 17hydroxy by using butyl vinyl ether, and carrying out hydrolysis after Grignard reaction to generate the 17alpha-hydroxyl progesterone. According to the synthesis method, the cost is reduced, the environment pollution is decreased, the reaction time is shortened, the aftertreatment process of the industrial production is simplified, the production time and cost are greatly saved, the productivity is improved and convenience is brought to the industrial implementation. Compared with the traditional process, the synthesis method has the characteristics of low raw material cost, simple and convenient method, high yield, good selectivity, mild reaction condition, small pollution and applicability to industrial production; and the method is stable and easy to realize.

The invention discloses a process for polymerization preparation of vinyl chloride/isobutyl vinyl ether copolyresin latex which consists of, subjecting 65-85 parts of chloroethylene and 15-35 parts of isobutylvinyl ether monomer to emulsifier-containing, water-soluble redox initiation system and aqueous phase of pH regulator for polymerization 2-12 hours, wherein the polymerization temperature being 35-65 deg. C.

The invention discloses a perfluoroether composite air condition hose, comprising an internal rubber layer, a shielding layer, a middle rubber layer, an enhancement layer and an external layer which are arranged from inside to outside, wherein the internal rubber layer is made of a perfluoroether rubber material; the perfluoroether rubber material is synthesized from tetrafluoroethylene, perfluoromethyl vinyl ether and a third monomer containing vulcanization points; the third monomer has the general formula of CF2=CF-ORfX (X is -COOR, -CN, -OC6H5), and the optimal third monomer is perfluoro(4-cyano butyl vinyl ether), perfluoro(2-fluorophenyl propyl vinyl ether) or perfluoro(styrene); and the middle rubber layer is made of one of butyl rubber, chloroprene rubber, brombutyl rubber and chlorobutyl rubber, or the middle rubber layer is prepared by blending two or more of the butyl rubber, the chloroprene rubber, the brombutyl rubber and the chlorobutyl rubber. The perfluoroether composite air condition hose provided by the invention has the characteristics of strong penetration resistance, chemical corrosion resistance, high temperature and low temperature resistance, good vibration adsorption and low vibration noise, can meet the requirement on penetration resistance of novel refrigerant and replaces metal materials truly.

The invention discloses a copolymer resin of chloroethylene-isobutyl vinyl ether-glycidyl acrylate and a preparation method thereof. The copolymer resin is obtained by copolymerization of 65-85 mass parts of chloroethylene, 15-30 mass parts of isobutyl vinyl ether and 0.5-5.0% (corresponding to the total mass of chloroethylene and isobutyl vinyl ether) of glycidyl acrylate. The preparation method comprises the following steps: adding the chloroethylene, isobutyl vinyl ether and glycidyl acrylate into aqueous phase containing emulsifier, a water-soluble redox initiation system and pH regulator, and carrying out emulsion polymerization for 3-10 hours at the temperature of 35-60 DEG C. The invention adds glycidyl acrylate into chloric ether resin to improve the heat stability of chloric ether resin and adhesion with metal; and meanwhile, copolymer has uniform composition and has high dissolving speed in solvent, such as sundex and the like.

The invention relates to a soil insensitive polycarboxylic acid water reducer and a preparation method of the reducer. The water reducer is prepared by taking a 4-hydroxybutyl vinyl ether macromonomer, unsaturated carboxylic acid, unsaturated sulfonate and an unsaturated ester micromonomer as a comonomer, and an initiator and a chain transfer agent as a molecular regulator for copolymerization reaction. A mass ratio of the 4-hydroxybutyl vinyl ether macromonomer to unsaturated carboxylic acid to unsaturated sulfonate to the unsaturated ester micromonomer to the initiator to the chain transfer agent to deionized water is (24-120):(4-8):(6-8):(10-20):(0.8-1.5):(0.4-2):(70-120). The invention further provides the preparation method of the water reducer. The water reducer is insensitive to a sand content of a sandstone material in concrete; when the water reducer is used for the concrete with the high sand content, the water reducer has higher water reducing capability and smaller slump loss than the traditional polycarboxylic acid water reducer; and the water reducer solves the problem that the traditional polycarboxylic acid water reducer is sensitive to soil, a raw material of sandstone, in the concrete application.

The invention relates to a synthesis method of 4- hydroxybutyl vinyl ether polyoxyethylene ether, and belongs to the technical field of polyether compound synthesis in organic chemistry. The synthesis method comprises two phases, namely a primary synthesis phase and a final synthesis phase, and specifically comprises the following steps: subjecting a part of 4-hydroxybutyl vinyl ether to a pre-reaction with a primary synthesis catalyst, adding the pre-reaction product into the rest part of 4-hydroxybutyl vinyl ether, introducing ethylene oxide to carry out primary synthesis so as to obtain a primary product, adding a final synthesis catalyst into a part of the primary product to carry out a secondary pre-reaction, and subjecting the secondary pre-reaction product to final synthesis reactions with the rest part of the primary product and ethylene oxide so as to obtain the final product. The product obtained by the technical scheme provided by the invention has the advantages of low by-product content, narrow molecular weight distribution, and high double-bond protection rate.

The invention discloses a synthesis method of isobutyl vinyl ether and a synthesis device thereof. In the method, isobutanol and acetylene which are taken as raw materials are etherified in a kettle type reactor to synthesize the isobutyl vinyl ether with the existence of a catalyst and an additive, wherein the temperature of the etherification is 120-200 DEG C, the reaction pressure is 0.4-0.8 Mpa; a reaction product is distilled from the reactor after reaction; and the product is refined to obtain an isobutyl vinyl ether product with the purity of above 99 percent, and the catalyst and the additive in the reactor can be continuously reused. The conversion rate of the isobutanol and the acetylene can achieve above 90 percent, the yield of synthesis reaction is above 95 percent, and the synthesis reaction adopts a closed reactor without tail gas exhausted basically.

The invention discloses a preparation device of isobutyl vinyl ether and a preparation method of isobutyl vinyl ether, which relates to isobutyl vinyl ether. The invention provides the preparation device of isobutyl vinyl ether and the preparation method of isobutyl vinyl ether. The preparation device of isobutyl vinyl ether is safe, efficient, low in energy consumption, low in cost and easy to industrialize. The device is provided with an absorber, a gas-liquid separator, a metering pump, a constant temperature oil bath, a tubular reactor, a condenser and a reducing valve. The preparation method comprises the following steps: 1) dissolving acetylene in a saturated solution formed by isobutanol and catalyst solutions; 2) pressurizing the saturated solution obtained in step 1) to 1-5MPa by the metering pump and introducing the saturated solution to the heated tubular reactor, wherein acetylene dissolved in the isobutanol and catalyst solutions react with isobutanol in the tubular reactor to generate isobutyl vinyl ether; and 3) cooling reactants sent from the tubular reactor, wherein part of the reactants is used as a coarse product of isobutyl vinyl ether and the rest of the reactants is circulated to step 1) and mixed with continuously fed isobutanol and catalyst solutions.

The invention provides a damping polycarboxylic acid water reducing agent as well as a preparation method and special production equipment thereof. According to the method, firstly, 4-hydroxybutyl vinyl ether polyoxyethylene polyoxybutylene ether is synthesized; the partial 4-hydroxybutyl vinyl ether reactants are subjected to pre-reaction; products are fed into the rest reactant; ethylene oxide and epoxybutane are added for reaction to obtain 4-hydroxybutyl vinyl ether polyoxyethylene polyoxybutylene ether oligomers; then, partial oligomers are subjected to pre-reaction; the products are fedinto the rest oligomers; ethylene oxide and epoxybutane are added for reaction; the 4-hydroxybutyl vinyl ether polyoxyethylene polyoxybutylene ether is obtained; then, the 4-hydroxybutyl vinyl ether polyoxyethylene polyoxybutylene ether, the 4-hydroxybutyl vinyl ether and unsaturated monocarboxylic acid monomers are subjected to monomer polymerization reaction to generate the damping polycarboxylic acid water reducing agent. The equipment comprises a pre-reaction kettle and a reaction kettle; a polyether primary and secondary pre-reaction kettle is provided with a catalyst continuous feeding device. The damping polycarboxylic acid water reducing agent provided by the invention has a good damping effect.

The invention discloses an antifouling paint for coating the bottom of a steel ship and preventing cracking, which is prepared from the following components in parts by weight: 10-25 parts of chloro-ether resin, 15-25 parts of epoxy-ester resin, 10-20 parts of rosin, 5-10 parts of pigment, 20-50 parts of antifouling agent, 1-3 parts of auxiliaries and 5-20 parts of mixed solvent, wherein the chloro-ether resin contains chloroethylene and isobutyl vinyl ether; the epoxy-ester resin contains fatty acid and bisphenol A epoxy resin; the antifouling agent contains cuprous oxide and thiram algicide; the auxiliaries include a wetting dispersant and an antifoaming agent; the mixed solvent contains xylene and 200# coke solvent. Without internally-forbidden toxic materials, the antifouling paint meets the state environmental protection requirements, and the antifouling period reaches 1-3 years; the antifouling paint has the characteristics of good anti-cracking property, rare falling and the like, can overcome the shortcomings that the existing antifouling paint easily gets crispy, is not environment-friendly and the like, and is mainly applied to the antifouling treatment of the bottom of a steel ship.

A highly-adaptive ultra-slow-release type polycarboxylate slump retaining admixture and a preparation method thereof are disclosed. The method includes an esterification step, namely a step of reacting methacrylic acid, a saturated acid and 3-bis(2-hydroxyethyl)amino-2-hydroxy propanesulfonic acid under the existence of a catalyst to obtain an unsaturated esterified small monomer; (2) subjecting 4-butanediol vinyl ether polyoxyethylene ether as a macromonomer to copolymerization under the action of a composite photoinitiator; and (3) neutralizing the obtained copolymerization product with a sodium hydroxide solution to obtain the slump retaining admixture. The prepared slump retaining admixture has good slump retaining capability at high temperature for long time, has certain anti-mud effects and has good adaptability to mud-containing ground materials.

The preparation method of isobutyl vinyl ether relates to isobutyl vinyl ether. The isobutanol solution containing the catalyst is pumped into the loop reactor from the bottom of the riser through the metering pump, and the mixed gas of acetylene and nitrogen enters the gas injector from the bottom of the riser after passing through the gas buffer tank, compressor and adsorption drying column; The driving material flows into the downcomer from the upper part of the riser, exchanges heat with the heat transfer oil through the heat exchanger, and then circulates back to the riser, and the ejected tiny bubbles are mixed and contacted with the isobutanol solution to react to obtain a reaction mixture; the reaction mixture It flows out from the outlet at the top of the riser, and enters the gas-liquid separator for gas-liquid separation after being cooled by the cooler. The liquid coming out of the bottom is isobutyl vinyl ether. The invention has good mass and heat transfer effect, simple device structure, safety and high efficiency, simple operation, low cost and easy industrialization.

The invention discloses a preparation method of palbociclib. The preparation method comprises the following steps: 1) dissolving 4-(6-aminopyridine-3-yl)-piperazine-1-tertiary butyl carboxylate into asolvent A, adding an alkali reagent, activating at 0-20 DEG C, adding 6-bromine-2-chlorine-8-cyclopentyl-5-methyl-pyridino-[2,3-D]-pyrimidine-7(8H)-ketone, adjusting the solution to acid after a reaction is completed, cooling and filtering, taking filter cakes, and drying the filter cakes to obtain an intermediate I; 2) in the presence of an inert atmosphere, dissolving the intermediate I and butyl vinyl ether into a solvent B, catalyzing with a catalyst at 95-105 DEG C, cooling and separating a crystal after the reaction is completed, filtering, and taking the filter cakes, and drying the filter cakes to obtain an intermediate II; 3) dissolving the intermediate II into a solvent C, adding an acid, adjusting the solution to acid after the reaction is completed, filtering, and taking and centrifuging filtrate to obtain a target product, namely palbociclib. By adjusting reaction parameters and optimizing preparation process procedures, the preparation method is high in product yield, good in purity, simple and mild in process conditions and applicable to industrial large-scale production.

The invention discloses a fully-degradable high-strength rope knot temporary plug. The fully-degradable high-strength rope knot temporary plug is prepared by the following steps of blending a polymer A, a plasticizer and sodium dodecyl sulfate, and sequentially drying, melting, spinning, drying, weaving and cutting, wherein the preparation method of the polymer A comprises the following steps of S1, dissolving triethylene glycol divinyl ether, butanediol, 4-hydroxybutyl vinyl ether and 2-acrylamide-2-methylpropanesulfonic acid in distilled water to obtain a solution A; S2, dissolving ammonium persulfate in the other part of distilled water to obtain a solution B; and S3, adding the solution A into a reaction container, keeping the temperature at 50 DEG C in a water bath, stirring, then slowly dropwise adding the solution B into the solution A within 1 hour, and after dropwise adding, continuously keeping the temperature at 50 DEG C to react for 8-10 hours, so as to obtain a polymer A. The temporary plug can replace a horizontal well bridge plug and all temporary plugging agents, and the material of the temporary plug can be completely degraded into carbon dioxide and water.

The invention discloses a preparation method of copolymer of hydroxybutyl vinyl ether and maleic anhydride, which comprises the following steps of: adding the mixed solvent of ethyl acetate and cyclohexane into a reactor; after heating to 50 to 70 DEG C, adding hydroxybutyl vinyl ether and maleic anhydride in sequence, stirring and mixing; then adding cyclohexane liquid containing initiator at a uniform speed ratio in 20 to 40 minutes; and after reacting for 1 to 5 hours at constant temperature, filtering out the clear liquid to obtain crosslinking copolymer of hydroxybutyl vinyl ether and maleic anhydride. The copolymer of hydroxybutyl vinyl ether and maleic anhydride prepared by the preparation method has the advantages of no smell, less material consumption, simple process and low cost,and can expand in a water system to form a transparent gelled product with a netty three-dimensional crosslinking structure.

The invention provides a preparation method of organic tin-free vinyl chloride-isobutyl vinyl ether copolymer resin (chlorine ether resin for short). The preparation method comprises the steps of adding the materials including deionized water, an emulsifying agent, a buffer agent and the like into polymerizing kettle, heating to a specified temperature, adding an emulsified mixture of the materials including vinyl chloride, isobutyl vinyl ether, deionized water, an emulsifying agent, a buffer agent, stabilizers and the like and materials including an initiator and the like in a batch or continuous manner to generate polymerization, and adding the stabilizers in the later period of the reaction, so as to obtain the organic tin-free chlorine ether resin, wherein the stabilizers are substances containing non-organic tin stabilizers with epoxy groups. The prepared organic tin-free chlorine ether resin has good thermal stability and can be applied to the fields of ink, coatings and the like of tools, foods and medical products. The preparation method has the advantages that the chlorine ether resin does not contain organic tin and has good thermal stability.

According to the technical scheme, a polycarboxylic acid high-performance water reducing agent production and synthesis device is characterized by comprising a polyether primary pre-reaction kettle, a polyether primary reaction kettle, a polyether secondary pre-reaction kettle, a polyether secondary reaction kettle and a water reducing agent reaction kettle which are connected in sequence; the device further comprises a 4-hydroxybutyl vinyl ether storage tank and an ethylene oxide and epoxybutane storage tank; the water reducing agent reaction kettle is further provided with an unsaturated monocarboxylic acid monomer solution storage tank and an initiator and chain transfer agent solution storage tank, and the polyether primary pre-reaction kettle and the polyether secondary pre-reaction kettle are provided with continuous catalyst feeders; and a first feeding mechanism for dispersing and feeding materials and a second feeding mechanism for atomizing and feeding ethylene oxide, epoxybutane and 4-hydroxybutyl vinyl ether are arranged on a feeding hole of the polyether primary reaction kettle. The device has the beneficial effects that the efficiency of producing and synthesizing the polycarboxylate water reducing agent is high, the mixing is sufficient, and the quality of the produced polycarboxylate water reducing agent is good.