81 results about "Ethylenesulfonic acid" patented technology

Aqueous laundry detergent compositions containing surfactants and fatty acid, having a pH of from about 6 to about 11 and containing a polymer having a number average molecular weight of from about 700,000 to about 4,000,000 and comprising monomeric units including: nonionic monomers selected from acrylamide, N,N-dialkyl acrylamide, methacrylamide, N,N-dialkylmethacrylamide, hydroxyalkyl acrylate and vinyl pyrrolidone, vinyl acetate, vinyl alcohol, and mixtures thereof; cationic monomers selected from N,N-dialkylaminoalkyl methacrylate, N,N-dialkylaminoalkyl acrylate, N,N-dialkylaminoalkyl acrylamide, N,N-dialkylaminoalkylmethacrylamide, methacylamidoalkyl trialkylammonium chloride, acrylamidoalkylltrialkylammonium chloride, vinylamine, quaternized vinyl imidazole and diallyl dialkyl ammonium chloride, and mixtures thereof; and anionic monomers selected from acrylic acid, methacrylic acid, maleic acid, vinyl sulfonic acid, styrene sulfonic acid, acrylamidopropylmethane sulfonic acid (AMPS), salts thereof, and mixtures thereof; in a specified mole ratio.

The invention provides a method for preparing nonspherical, raspberry-shaped or hollow polymer microspheres through one-pot dispersion polymerization, and belongs to the technical field of dispersion polymerization. The method comprises the steps of stirring monomers styrene St and sodium styrenesulfonate NaSS and an initiator azodiisobutyronitrile AIBN, and dissolving the mixture in the mixed solution of an organic solvent and water to form a reaction solution; increasing the temperature of the reaction solution to the range from 75 to 80 DEG C and reacting for a certain of time; next, dropwise adding a cross-linking agent or the cross-linking and other reaction reagents to the reaction system, and further reacting for a while to obtain nonspherical, raspberry-shaped or hollow polymer microspheres. According to the invention, a method for directly preparing different types (nonspherical, raspberry-shaped or hollow) of polymer microspheres based on conventional dispersion polymerization and by controlling the cross-linking reaction process and adjusting reaction parameters is established.

The invention discloses an acrylic polymer dispersing agent with high dispersion and stability, low preparation cost and environmental protection as well as a preparation process and applications thereof. The acrylic polymer dispersing agent is prepared through free radical copolymerization of acrylic acid, sodium styrene sulphonate and maleic anhydride, the number average relative molecular weight of the copolymer is between 2000 and 40000, and the dispersing agent has advantages of high thermal stability, good water solubility, excellent adaptability to acid and alkali and good dispersion stability, and also has good dispersion effects to calcium carbonate, zinc oxide, barium sulfate, titanium dioxide and pesticide Atrazine water dispersible granules, imidacloprid water dispersible granules and Aatrex water dispersible granules, and can be widely used in the pesticide, pigment, dyestuff, coal water slurry and other industries. In addition, the preparation process has the advantages of simple operation, short cycle, environmental protection and low cost, and is suitable for the industrial scale production.

Provided is a fine-processing agent which, when fine-processing a laminated film stacked at least with a silicon dioxide film and a silicon nitride film, can selectively fine-process the silicon dioxide film. Also provided is a fine-processing method utilizing the fine-processing agent. The fine-processing agent is characterized by including: (a) 0.01-15.0 weight % hydrogen fluoride and / or 0.1-40.0 weight % ammonium fluoride, (b) water, and (c) 0.001-10.00 weight % water-soluble polymer selected from among a group consisting of acrylic acid, ammonium acrylate, acrylic acid ester, acrylamide, styrenesulfonic acid, ammonium styrenesulfonate, and styrenesulfonic acid ester.

The invention discloses a composite brightener, nanocrystalline nickel electroplate liquid and a method for nickel plating on the surface of a workpiece based on the nanocrystalline electroplate liquid. The composite brightener comprises saccharin sodium salt, diethyl propiolic amine, pyridinium propyl sulfobetaine, and an aqueous solution of ethylenesulfonic acid and S-carboxyethylisothiuronium betaine. The composite brightener is good in dispersing power and covering power in the electroplate liquid, the number of decomposition products in the nickel plating process is small, the brightening speed is high, stability of the electroplate liquid is good and the service life is long. The electroplate liquid added with the composite brightener has the advantages of being high in brightening speed, compact in clad layer structure, bright and uniform in appearance in the nickel plating process of the electroplate liquid. The average dimension of obtained nickel layer crystal grains reaches 8 nm, the appearance of the clad layer is bright and uniform, and the quality is stable.

The invention discloses a method for producing high-purity electronic titanium dioxide. Panzhihua titanium concentrate with the concentration larger than or equal to 80% is selected as a raw material,sulfuric acid is used for acidolysis of the titanium concentrate, a flocculating agent composed of a maleic anhydride-styrene sulfonic acid copolymer, sodium lignin sulfonate and polyaluminum chloride is added for impurity removal treatment, standing and filter pressing are conducted for solid-liquid separation, filter-pressed liquid enters a vacuum crystallization system, secondary filter pressing is conducted, and refined titaniferous solution is obtained; water is added into the refined titaniferous solution to adjust the concentration to 95-200g / L, heating and stirring are performed, anda crystal form control agent is added to react to obtain a hydrolysate; the hydrolysate is washed until the iron ion content is below 150ppm, then sulfuric acid is added for bleaching and washed for the second time until the iron ion content is below 50ppm to obtain slurry; squeezing is performed by a filter press, a filter cake is calcined in a rotary kiln and crushed to obtain the electronic titanium dioxide. The purity of the titanium dioxide product prepared by the method reaches 99.5% or above, the particle size distribution is 200-400 nm, the particle size distribution is narrow, the particle size distribution is uniform, the powder whiteness reaches 90% or above, and the requirements of middle-high-end electronic-grade titanium dioxide can be met.

The invention relates to a preparation method of a fluid loss control agent for branched water-based drilling fluid, and belongs to the technical field of oil field chemistry. Polyethylene polyamine compounds containing multiple double bonds are prepared by reacting polyethylene polyamines with halogenated hydrocarbons containing double bonds, which are used as crosslinking agents, and non-ionic water-soluble monomers such as acrylamide and vinylpyrrolidone, And anionic water-soluble monomers such as 2-acrylamide-2-methylpropanesulfonic acid and sodium styrenesulfonate are used as polymerization raw materials to synthesize polymers with micro-crosslinked structures. This kind of polymer has excellent heat resistance and salt resistance, and its molecular structure has a variety of functional groups, which can significantly improve the dispersion stability of clay particles, and is suitable as a fluid loss control agent for water-based drilling fluids under harsh conditions.

The invention discloses an additive used for increasing flexural and compressive strength of cement mortar, and a preparation and application method thereof, and belongs to the field of cement additive. The additive is used for solving a technical problem of conventional polymer cement additives that strengthening effect is poor. The additive is a CMC-XYX type polymer emulsion, wherein CMC is used for representing carboxymethyl cellulose, X is used for representing styrene sulfonic acid group, and Y is used for representing acetic acid vinyl ester group. The preparation method comprises following steps: potassium persulphate and sodium p-styrene sulfonate are added into a carboxymethyl cellulose solution successively for graft copolymerization; potassium persulphate, and acetic acid vinyl ester are added successively for graft copolymerization; and potassium persulphate and sodium p-styrenesulfonate are added successively for graft copolymerization so as to obtain the additive. In applications, the additive is uniformly mixed with sodium lignosulfonate, water, sand, and cement, and then is uniformly mixed with tributyl phosphate. The preparation and application method is simple; and the additive can be used in building field.

The invention discloses a synthetic method of a potentiometric pesticide sensor, and belongs to a molecular imprinting technology. The synthetic method comprises the following steps: (1) dissolving chloromethylated polysulfone (CMPSF) into dichloromethane, adding dimethylacetamide TDMAC, pouring into a glass culture dish, performing film casting, and immersing into ethidene diamine for amination to prepare an ammoniated polysulfone (AMPSF) membrane with amino on the surface; (2) dissolving absolute ethyl alcohol, sodium styrenesulfonate (SSS) and pirimicarb into water, and adding the AMPSF membrane, an initiator, namely ammonium persulfate and a crosslinking agent, namely bisacrylamide MBA to obtain a pirimicarb molecule-imprinted membrane MIM; (3) establishing the sensor. The grafting-type imprinted membrane has specific recognition selectivity and excellent binding affinity for pirimicarb template molecules, and has the binding capacity as high as 92 microgram / cm<2>; the potentiometric sensor established by using the pirimicarb molecule-imprinted membrane as a sensitive membrane is simple and quick in establishment process and sensitive and accurate in detection.

The invention discloses a method for preparing rutile titanium dioxide with high tinctorial strength, which comprises the following steps: adding sulfuric acid into titanium concentrate for acidolysisto obtain a titanium suspension, and adding a flocculant composed of maleic anhydride-styrene sulfonic acid copolymer, sodium lignin sulfonate and polyaluminum chloride into the titanium suspension for impurity removal treatment to obtain a refined titanium solution; adding rutile seed crystals and a dispersing agent into the refined titanium solution for hydrolysis to obtain a hydrolysate; washing the hydrolysate with water, adding sulfuric acid for bleaching, and washing for a second time to obtain a slurry; adding a salt solution treating agent consisting of a phosphate solution, a zinc acetate solution and a yttrium nitrate solution into the slurry; and carrying out filter pressing on the slurry by using a filter press, calcining a filter cake in a rotary kiln, cooling, and crushing to obtain rutile titanium dioxide. The rutile content of the rutile titanium dioxide prepared through the method reaches 98.5% or above, the whiteness reaches 98% or above, the Tcs value reaches 2034 or above, the Scx value reaches 4.21 or above, and the product is uniform in particle size distribution and good in dispersity and is an excellent white pigment.

The invention discloses a terpolymer dispersing agent with high dispersion and stability, low preparation cost and environmental protection as well as a preparation process and applications thereof. The terpolymer dispersing agent is prepared through free radical copolymerization of acrylic acid, sodium styrene sulfonate, hydroxypropyl acrylate or 2-hydroxyethyl methacrylate, the number average relative molecular weight of the terpolymer is between 2000 and 40000, and the dispersing agent has advantages of high thermal stability, good water solubility, excellent adaptability to acid and alkali and good dispersion stability, and also has good dispersion effects to calcium carbonate, zinc oxide, barium sulfate, titanium dioxide and pesticide Atrazine water dispersible granules and fipronil water dispersible granule, and can be widely used in the pesticide, pigment, dyestuff, coal water slurry and other industries. In addition, the preparation process has the advantages of simple operation, short cycle, environmental protection and low cost, and is suitable for the industrial scale production.