529 results about "Allyl chloride" patented technology

The invention discloses a salt-resistant and calcium-resistant filtrate reducer applied to a drilling fluid and a preparation method of the filtrate reducer. The filtrate reducer is prepared from raw materials and water, wherein the raw materials comprise 2-acrylamide-2-methyl propane sulfonic acid, acrylic acid, acrylamide and dimethyl diallyl ammonium chloride; the ratio of m(2-acrylamide-2-methyl propane sulfonic acid) to m(acrylic acid) to m(acrylamide) to m(dimethyl diallyl ammonium chloride) to m(initiator) to m(molecular weight control agent) is (40-60) to (6-10) to (30-40) to (5-9) to (1-2) to (0.1-0.5). The molecular weight of the salt-resistant and calcium-resistant filtrate reducer applied to the drilling fluid and prepared by the preparation method is greatly improved; the coating property, the inhibition property, the heat stability and the salt-resistant and calcium-resistant pollution capacity of the filtrate reducer are greatly improved; by virtue of the salt-resistant and calcium-resistant filtrate reducer applied to the drilling fluid, the rheological property of the drilling fluid can be greatly improved; the salt-resistant and calcium-resistant filtrate reducer applied to the drilling fluid also has a high temperature-resistant effect at 150-180 DEG C.

The invention discloses a cation type hydrophobic association polymer and a preparation method and application thereof. Through adopting acrylamide, dimethyl diallyl ammonium chloride and butyl acrylate as synthesis monomer, the cation type hydrophobic association polymer is made through a common free radical micelle polymerization method and making use of a composite initiation system and additive auxiliary agent urea. Moreover, the cation type hydrophobic association polymer, which has the characteristics of high molecular weight, excellent product stability, strong adsorption bridging capacity of colloid matter, good flocculation effect, wide application scope, less generated sludge and hydrophobic association function, etc., can be widely used in the treatment of oil field oily wastewater.

An amphiprotic polyacrylamide oil field fracturing gelatinizer and a preparation process are disclosed. The gelatinizer has the structural formula which is showed by I, wherein R1 is H or CH3, R2 is C1-C4 alkyl, R3 is C2-C14 alkyl, m1, m2 and m5 are integers from 2 to 10, m3 is an integer from 0 to 100, and m4 is the integer from 0 to 1. The preparation process comprises using the compound of dehydration sorbic alcohol fatty acid ester, nonyl phenol polyoxyethylene ether and fatty alcohol polyoxyethylene ether non-ionic emulsifier as emulsifier, using acrylamide, acroleic acid or methacrylic acid, methyl alkyl pi-allyl ammonium chloride, N, N -methylene bisacrylamide as monomer, obtaining even and stable invert emulsion through conducting invert emulsion system polymerization reaction for water, oil, alcohol, amine sulphurate and ethanedioic acid hexamethylene diamine, and conducting cross-linking through utilizing Cr3+, Zr4+ and Ti4+, -CHO, or the structural formula II as cross linking agent to obtain gelatinizer gel.

The invention relates to a salt-tolerant resistance-reducing agent applied for a shale gas reservoir. The resistance-reducing agent is a biopolymer comprising an acrylamide unit and a propenyl quaternary ammonium salt unit. The weight percent of the acrylamide in the biopolymer is 10%-80%. The propenyl quaternary ammonium salt is one of a propenyl trialkyl ammonium chloride, an alkyl acrylamido propyl trialkyl ammonium chloride or a dialkyl diallyl ammonium chloride. The weight percent of the propenyl quaternary ammonium salt in the biopolymer is 20%-90%, and the molecular weight of the propenyl quaternary ammonium salt is 1*10<6> to 2*10<6>. The resistance-reducing agent provided by the invention can be used as resistance-reducing agents for fracturing flow-back fluid, cavern water and underground produced water, wherein the fracturing flow-back fluid, the cavern water and the underground produced water contain divalent metal ions, and the weight percent resistance-reducing agent provided by the invention for using is 0.05%-0.1%. The resistance-reducing agent provided by the invention has good salt tolerance and resistance-reducing properties, and overcomes problems, of other polypropanamide resistance-reducing agents at present, comprising salt tolerance deficiency in using processes and incapability of being applied for hypersalinity water that comprises Ca<2+> and Mg<2+> at the same time.

The invention relates to a synthetic method of 2-methallyl alcohol. The synthetic method comprises the step of carrying out esterification reaction, refinement and separation and hydrolysis reaction on 2-methallyl chloride and sodium carboxylate to prepare 2-methallyl alcohol, wherein the formulas of the esterification reaction and the hydrolysis reaction are respectively formula (1) and formula (2) both referring to the description; the R is CH3 or CH3CH2, namely, methyl or ethyl. According to the invention, the synthetic method is reasonable in technology and easy to operate; the product is high selectivity and relatively high in quality; carboxylic sodium in the esterification reaction stage and water in the hydrolysis reaction stage are recycled and need no external supplement, so that cyclic utilization is achieved, and the product yield is improved.

The invention belongs to the field of chemical industry, and discloses a method for preparing 2-methyl allyl alcohol by esterification and hydrolysis. The method comprises the following steps of: first, performing esterification reaction of 2-methyl allyl chloride and carboxylate; and then, kalifying for hydrolysis reaction to synthesize 2-methyl allyl alcohol. The synthesizing steps are as follows: (1) esterification reaction: under the effect of a phase transfer catalyst, adding carboxylate, water and 2-methyl allyl chloride into a high pressure kettle for esterification reaction; after esterification reaction, cooling, standing and layering the reaction liquor to obtain an organic layer and a water layer, wherein the organic layer is a mixture which takes 2-methyl allyl carboxylate as a main product; (2) hydrolysis reaction: adding alkali liquor to the organic layer obtained in the esterification reaction stage for hydrolysis reaction; cooling, standing and layering the mixed liquor obtained by hydrolysis to obtain an organic layer and a water layer, wherein the organic layer is a target product, namely 2-methyl allyl alcohol. The method is high in material conversion ratio and product selectivity, the product yield is improved, and the separation energy consumption and material consumption are reduced.

The invention provides a preparation method of modified straw powder. The method comprises the following steps of: contacting straw powder and an aqueous solution of a modifier at a temperature between 80 and 100 DEG C for 1 to 4 hours; and reacting a product generated by the contact of the obtained substance and the modifier with allyl chloride at a temperature between 100 and 120 DEG C for 1 to8 hours in the presence of a solvent to obtain the modified straw powder. The modifier is alkali or acid, and the solvent can dissolve the allyl chloride. The invention also provides the modified straw powder, wherein the modified straw powder is prepared by the preparation method. The invention also provides a biodegradable material, which is prepared by melting a mixture containing the straw powder and base resin, wherein the straw powder is the modified straw powder. The biodegradable material adopts the modified straw powder so as to achieve good biodegradability and mechanical strength.

The invention relates to a clay antiswelling agent for petroleum extraction and a preparation method thereof. The preparation method comprises the following steps of: dissolving 50-90 percent of diallyl ammonium chloride monomer and 10-50 percent of triallylamine monomer into distilled water according to mass proportion, wherein the total mass proportion concentration of the two monomers is 20-80 percent; adding into a reactor; charging nitrogen; adding initiator at 65-85 DEG C, wherein the initiator is ammonium persulfate, potassium persulfate or hydrogen peroxide; and reacting for 4-6 hours to obtain a polymer clay antiswelling agent for petroleum extraction, which has the molecular structure that three branch chains contain organic cations. The antiswelling agent has high inhibiting performance on clay, durable antiswelling effect, water scouring resistance and no damage to the stratum and can be used for water injection, acidification and well control fluid.

The invention discloses a method for synthetizing diallyl polyether. A polymerization product which is prepared from ethylene oxide and propylene oxide by using allyl alcohol as a starting agent is polyether with the following general formula (I). The method is carried out according to the following process steps of: 1, adding an alkoxidation reagent into the polyether to perform alkoxidation reaction and removing methanol generated during the reaction; 2, then filling allyl chloride into a reaction kettle to continuously perform the reaction, wherein the charging molar ratio of the polyether to the allyl chloride is 1: (1.0-2.0) and a by-product is sodium chloride or potassium chloride; and 3, refining the product, i.e. firstly, distilling and recovering the unreacted allyl chloride and then filtering a crude product to obtain the refined product. The problems of poor reaction activity and low yield of termination of polyether containing a secondary hydroxyl group, particularly high molecular weight polyether are solved. Due to the selection of the alkoxidation reagent, not only is the problem of generating a highly toxic allyl alcohol by-product in the conventional allylation process solved, but also the product has high yield of termination.

The present invention discloses water treating agent containing methoxy naphthalene as fluorescent marker. The water treating agent is prepared through the first reaction of 4-chloro-1, 8-naphthalic anhydride, glacial acetic acid and 3-dimethylamino propylamine to obtain 4-chloro-N-3-dimethylamino propyl-naphthyl imide; the subsequent reaction with sodium methoxide to introduce methoxy group and obtain 4, 4-methoxyl-N-3-dimethylamino propyl-naphthyl imide, which is reacted with allyl chloride to obtain quaternary ammonium salt of 4-methoxyl-N-3-dimethylamino propyl-naphthyl imide allyl chloride as fluorescent monomer with fluorescent characteristic and double bond; and the final polymerization with phosphorus containing compound, acrylic acid and other monomer to obtain the multifunctional water treating agent with corrosion retarding, scale inhibiting, dispersing and fluorescent tracing functions.

The invention provides a powder combination of acrylonitrile-butadiene-styrene (ABS) copolymers. The invention is characterized in that the powder combination is prepared by copolymerization of raw materials. The raw materials contain, by weight, 5-30 parts of polybutadiene latex, 60-95 parts of styrene monomer, 5-40 parts of acrylonitrile monomer, 0.1-8 parts of an emulsifier, 0.01-1 part of an initiator, and 0-2 parts of a molecular weight regulator, wherein seeded latex is selected from polybutadiene, butadiene styrene rubber latex, ethylene propylene rubber latex, ethene-propylene-diene ternary copolymer latex, polyacrylate and chlorinated polyethylene; the acrylonitrile monomer is selected from acrylonitrile, acrylic esters and methacrylate; and the styrene monomer is selected from styrene, methyl styrene, terpene oil and allyl chloride. The combination provided by the invention has a wide performance range. Particle size of the combination is adjustable within 0.1-100 microns, and particle size distribution is narrow. Thus, it is very beneficial to a 3D printing forming technology.

The invention discloses a method for preparing an allyl surface-active macromonomer, which is characterized by comprising the following steps: adding 20 portions of alkylphenol polyoxyethylene ether (CmH2m+1-C6H4-O-(CH2CH2O)nH, n is equal to 1 to 60, and m is equal to 1 to 20), 10 to 900 portions of solvent and 0.1 to 15 portions of catalyst into a three-mouth reaction flask with a reflux condensation device, and reacting the mixture for 1 hour under stirring at the room temperature; increasing temperature to 30 to 95 DEG C, adding 0.5 to 20 portions of allyl chloride into the reaction product, and continuously reacting for 6 to 48 hours; distilling the reaction product under reduced pressure to remove the solvent so as to obtain a crude product; and performing silica gel column chromatographic separation to obtain allyl alkylphenol polyoxyethylene ether with the yield of 70 to 95 percent. The allyl alkylphenol polyoxyethylene ether has excellent surface activity, and can be directly used as a surfactant. A water-soluble copolymer synthesized by taking the allyl alkylphenol polyoxyethylene ether as a surface-active macromonomer has the function of tackifying, or reducing solution surface tension and water-oil interfacial tension, and can be taken as a tackifying copolymer or a macromolecular surfactant for improving the oil recovery ratio.

A phosphino-based mapropyl copolymer containing fluorescent group and its production are disclosed. The process is carried out by taking 4-bromine-1,8-naphthalic anhydride, glacial acetic acid and N, N-dimethyl-ethylenediamine as raw materials to obtain 4-bromine-N-(2-N,, N,-dimethylbenzidine-ethyl)naphthalimide, reacting it with sodium methoxide to induce methoxy-group to obtain 4-methoxy-N-(2-N,, N,- dimethylbenzidine-ethyl)naphthalimide, reacting it with allyl chloride to obtain fluorescent monomer 4-methoxy-N-(2-N,, N,- dimethylbenzidine-ethyl)naphthalimide allyl ammonia chloride with fluorescent characteristic and double-bond, polymerizing it with sub-sodium phosphate, maleic anhydride, acroleic acid and propenyl-sodium sulfate to obtain the final product. It has fluorescent tracting, corrosion-inhibting, scale-inhibiting and dispersion functions.

The invention provides a method for synthesizing quaternary ammonium salt ionic liquid by microwave radiation heating, which comprises the following steps: mixing tertiary amine compounds (N,N-dimethylethanolamine, trimethylamine or triethanolamine) and halohydrocarbon compounds (allyl chloride, n-butyl chloride, n-butyl bromide, octadecyl chloride) with a molar ratio of 1:1.05-1:2 under a microwave radiation heating condition, putting the mixture into a microwave reactor to perform a microwave reaction with an adjusted microwave power of 100 W-400 W, a heating temperature of 30 DEG C-80 DEG C, and reaction time of 1 min-15 min so as to obtain a crude product, removing residual halohydrocarbon compounds in the crude product to obtain quaternary ammonium salt ionic liquid with halogens as anions; the halohydrocarbon compounds are chlorinated hydrocarbon compounds or brominated hydrocarbon compounds. The preparation method of the invention is simple, does not require the addition of any solvent except reaction raw materials, and can prepare high-purity quaternary ammonium salt ionic liquid simply, efficiently, rapidly, and economically.

The invention relates to a method for separating corncob cellulose by using ionic liquid. According to the invention, an ionic liquid 1-allyl-3-methylimidazole chlorine salt is synthesized with raw materials of allyl chloride and 1-methylimidazole; and with the high solubility of the ionic liquid upon cellulose, the ionic liquid is used for separating and extracting cellulose in corncob. The method comprises the steps of corncob pretreatment, lignin removing, cellulose separation, cellulose extraction, and the like. The extraction rate of corncob cellulose is approximately 18.35%. With the method, the purity of the extracted corncob is high, and the film-forming property of the cellulose is good. According to the invention, a green solvent which is the ionic liquid is used as a dissolving medium. The solvent can be recovered and reused, such that the requirement of green production is satisfied.

The invention relates to a polymer/Ag doped nanometer ZnO long-acting antibacterial and mildew-proof finishing agent for a cotton fabric and a preparation method of the finishing agent. The existing antibacterial material for the cotton fabric is low in antibacterial performance, great in one-time dissolution, and not lasting in the antibacterial and mildew-proof performance. Ag doped nanometer ZnO is prepared by using zinc acetate and silver nitrate as precursors by a coprecipitation method; the polymer/Ag doped nanometer ZnO long-acting antibacterial and mildew-proof finishing agent is prepared by using Ag doped ZnO, allyl glycidyl ether and dimethyl diallyl ammonium chloride as raw materials via an in-situ polymerization method. The antibacterial and mildew-proof finishing agent is applied to the afterfinish of the cotton fabric; the Ag doped ZnO in the composite material and N+ in the dimethyl diallyl ammonium chloride can jointly resist bacteria to achieve the efficient antibacterial and mildew-proof performance; the hydroxyl of the cotton fabric surface can be crosslinked with the epoxy group in the polymer; the long-acting antibacterial and mildew-proof performance of the cotton fabric is improved; meanwhile, the injury to the human body caused by one-time dissolution of the nanometer antibacterial material used by the fabric is reduced.

The invention discloses 1-(1,2,4-triazole triazole-1- group)ketoxime ether or its nitrate as shown in the chemical structure formula I, wherein R<1> is selected from the group consisting of C1-2alkyl, C3-4straight chain or branched alkyl; R is selected from the group consisting of C1-C2alkyl, C3-C18 straight chain or branched alkyl or alicyclic groups; allyl, propargyl, 2-methyl allyl, 2-chlorallyl, (Z)-3-chlorallyl, (E)-3-chlorallyl, or ArCH2; or Y(CH2)n:Y equals to fluorine, chlorine, bromine or iodine, n equals to 1,2,3,4,5 or 6. The application of 1-(1,2,4-triazole triazole-1- group)ketoxime ether or its nitrate as shown in the formula I in the preparation of a bactericide for killing wheat powdery mildew or Botrytis cinerea.

The invention provides a method for preparing 1,3-propane sultone (PS). The method comprises the following steps: dripping allyl chloride into a certain quantity of a sodium metabisulfite aqueous solution to prepare sodium allyl sulfonate; carrying out reaction between sodium allyl sulfonate and sulfuric acid under the existence of a catalyst; carrying out hydrolysis under an alkali condition; carrying out acidation to prepare 3-hydroxypropanesulfonic acid; conducting cyclodehydration under the existence of an inert dehydrating agent to prepare 1,3-propane sultone. The method has the advantages that allyl chloride which is cheap is taken as a raw material; the target product with relatively high yield is prepared according to the four steps of substitution, addition reaction, hydrolysis and cyclization; the reaction condition is mild; the suitability for mass production is realized.

The invention relates to a branched chain ether type anionic surfactant and a preparation method thereof. The surfactant has two tail chains, and the tail chains contain nonionic hydrophilic groups. The surfactant has excellent salt tolerance, and can obviously reduce the oil-water interface tension in high-concentration saline. The surfactant can be used for tertiary oil recovery of a high mineralization oil reservoir to improve the recovery rate of crude oil. The surfactant can be synthesized by using relatively cheap raw materials such as epoxy chloropropane, allyl chloride, sodium bisulfite and the like.