356 results about "Benzenesulfonates" patented technology

The invention provides a method for preparing high base number (TBN400) synthetic calcium alkyl-benzene sulfonate. The method comprises the following steps of: adopting a mixed acid of long-chain linear alkyl-benzene sulfonic acid and high-boiling heavy alkyl-benzene sulfonic acid, calcium oxide and/or calcium hydroxide, low-carbon alcohol, alkaline-earth metal halide or nitrate, and a mixture of alkaline-earth metal alkylphenol or alkaline-earth metal alkylphenate and polyisobutylene succinic anhydride for a neutralization reaction in the presence of a solvent and cutback oil at a temperature of between 40 and 80 DEG C; then, passing through carbon dioxide to a product of the neutralization reaction at a temperature of between 40 and 60 DEG C for a carbonation reaction; and producing high base synthetic alkyl-benzene sulfonate with a total base number (TBN) of 400mgKOH/g by adopting a process of a one-step method. The product is divided into high-base number (TBN400) synthetic alkyl-benzene sulfonate containing chlorine and high-base number (TBN400) synthetic alkyl-benzene sulfonate without the chlorine. The product produced by adopting the method with low viscosity, small turbidity, easy filtration, light color and no skin formation has the advantages of excellent high-temperature detergency, excellent anti-foaming property and excellent heat storage stability.

The invention relates to a safe and environment-friendly cleaning agent for vegetables and fruits, which can effectively remove pesticide residue on the surface of the vegetables and fruits without causing secondary pollution to the surfaces of the vegetables and fruits, and is safe, environment-friendly, free from phosphorus, alkali, sodium alkyl benzenesulfonate and capable of protecting the environment and health of people. The formula of the safe and environment-friendly cleaning agent is neutral and particularly contains natural aloes and protects skin from being hurt. The safe and environment-friendly cleaning agent for vegetables and fruits comprises the following raw materials in part by weight: 1.0 to 8.0 parts of chelating agent, 8 to 20 parts of sucrose ester, 3 to 12 parts of alkyl glucoside, 1.5 to 15 parts of Tween, 3 to 15 parts of solubilizer, 0.3 to 5.0 parts of thickener, 0.2 to 1.5 parts of hand-care component, 0.03 to 0.08 part of preservative, citric acid (in an amount capable of regulating the pH value to 6.5 to 8.5), 50 to 70 percent of water and 0.02 to 0.08 percent of food-grade essence (which is added according to actual needs).

This invention is directed to detergent compositions which employ sulfonated alkyltoluenes as surfactants, wherein the sulfonated alkyltoluenes have a higher content of the sulfonated 2-phenyl alkyltoluenes isomers than was previously available in sulfonated alkyltoluene surfactants of the prior art. Cleaning compositions according to the invention are more effective as cleaning agents over their counterparts of prior art which contain sulfonated alkyltoluenes having lower contents of the 2-phenyl alkyltoluene isomers, owing to an unexpected increase in tolerance of water hardness minerals normally associated with precipitation of the active detergent agent. Solid sulfonate salts of alkyltoluenes are also provided, including dry cleaning formulations containing same. The alkyltoluenes of this invention may be combined with alkylbenzene surfactants in order to provide detergent blends having increased water hardness tolerance, lower Krafft temperature, and increased cleaning performance over what was previously afforded by the prior art.

An esterified substituted benzene sulfonate, a method of making the same, a detergent composition comprising the same and a method of using the detergent composition.

The invention discloses a water-soluble copolyester and a preparation method thereof. The invention is characterized in that the water-soluble copolyester is obtained by sequentially carrying out esterification or ester exchange reaction and polycondensation reaction on dicarboxylic acid or esters thereof, m-benzenesulfonate, 2,5-furyl-diformic acid and dibasic alcohol as raw materials; the glass transition temperature of the water-soluble copolyester is 30-60 DEG C; and under the condition of 35 DEG C and orthochlorophenol as a solvent, the intrinsic viscosity of the water-soluble copolyester is at least 0.25 dL/g. By partially or totally substituting terephthalic acid with biomass-base 2,5-furyl-diformic acid, the technique reduces the consumption of the fossil raw material, and the water-soluble polyester has better environment-friendly characteristic and sustainable development performance, and has higher water solubility.

Nano RE oxide is prepared through the process of: selecting single RE oxide R2O3, where R is La, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Y and Sc, or their mixture as raw material; dissolving in water solution of nitric acid or hydrochloric acid to reach a RE ion density of 0.1-0.4 mol/L; heating to 30-80 deg.c; adding dispersant sodium dodecyl benzenesulfonate, polyoxyethylenated alcohol, SPAN-80 or Tween-80 and precipitant to form RE carbonate precipitate; filtering, drying, and heating to 700-900 deg.c to obtain single or mixed nano RE oxide. The nano RE oxide has grain size smaller than 40 nm and specific surface area of 20-40 sq m/g.

In the course of developing 2-[[[2-[(hydroxyacetyl)amino]-4-pyridinyl]methyl]thio]-N-[4-(trifluoromethoxy)phenyl]-3-pyridinecarboxamide (compound A), there are the multiple problems: 1) compound A or its salt is difficult to be recrystallized, the storage stability largely differs depending on the kind of the salt, and it is very difficult to obtain a salt of compound A having excellent storage stability; 2) in a crystallization process of compound A, it is very difficult to control a crystal polymorph, and 3) compound A (free body) causes mineral deposition in the stomach when it is orally administered repeatedly. For solving these problems, we made examination focusing on the kind of the salt and, as a result, found that 1) benzenesulfonate of compound A does not decompose by light, humidity and other factors in a 1-week preliminary stability test (severe test), and has no problem in its storage stability, 2) a method of selectively producing two kinds of crystal forms of benzenesulfonate of compound A, and that 3) no mineral deposition in the stomach is observed even after a 4-week repeated oral administration.

The invention relates to utilization and technology of agriculture and forestry biological data, in particular to a method for separating lignin and holocellulose from wood fiber raw materials. The method comprises the following steps: a, wood fiber raw materials are mixed with an alkali liquor and then soaked and moistened; b, the soaked and moistened wood fiber raw materials are homogenized and then filtered and separated to obtain solid residues and a filtrate I; c, the solid residues which are washed with water are added into a benzene sulfonate water solution for digestion, and the digested solid residues are filtered and separated to obtain residues containing holocellulose and a filtrate containing lignin; d, the residues containing holocellulose are washed to obtain holocellulose; e, water is added into the filtrate containing lignin to separate lignin, filtering is performed to obtain lignin residues and a filtrate II, and the lignin residues are washed and dried to obtain lignin. The method provided by the invention is simple and feasible in process, environment-friendly, and low in toxicity, the lignin extraction yield is high, and the saccharification efficiency of holocellulose obtained through separation is also high.

The invention discloses a palbociclib pharmaceutical composition, comprising palbociclib or its medicinal salt and a pharmaceutically acceptable auxiliary material, wherein the palbociclib or its medicinal salt is 50-150 Mum, and the medicinal salt includes isethionates, hydrochlorides, sulfates or benzene sulfonates.Direct mixing and capsuling process of raw and auxiliary materials is used for the pharmaceutical composition provided herein, the biological availability is high, product quality stability is good, the technical process is easy to control, inter-batch reproducibility is good, and the composition is easy to industrialize.

This invention relates to a method for preparing high-stability carbamide peroxide. The method comprises: (1) adding urea and stabilizer into 25-40 wt. % H2O2; (2) stirring so that urea is completely dissolved, and drying to obtain carbamide peroxide crystals. The stabilizer is a mixture of zinc tartrate, tartaric acid and dodecyl benzenesulfonate at a weight ratio of (1-2) : (45-49): (45-50). The mol ratio of urea to H2O2 is 1: (1.0-1.2). The method has such advantages as high yield, simple process, no wastes and high product stability, and is suitable for mass production.

This invention discloses a method for preparing entecavir acid-addition salts, entecavir magnesium salt and entecavir barium salt. The entecavir acid-addition salts are prepared from entecavir and inorganic or organic acids, and are preferential entecavir hydrochloride, entecavir bromate, entecavir sulfate, entecavir phosphate, entecavir sulfonate, and entecavir benzenesulfonate. The entecavir slats are stable, and have higher water solubility than entecavir itself, thus are more suitable to manufacture anti-HBV drugs.

The invention discloses an anionic emulsifier, and a preparation method and application thereof. The anionic emulsifier is prepared from sulfanilic acid, epoxy active diluent and epoxy resin according to a mol ratio of 1: 1: 1.05-1.15. Specifically, the preparation method comprises a step of preparing the anionic emulsifier with a solid content of 50 to 55% from epoxy resin, epoxy active diluent and sulfanilic acid under the catalysis of triphenyl phosphine. The structure of the anionic emulsifier provided by the invention is unique and innovative; and a benzenesulfonate group, an epoxy group (provided by the epoxy resin) and a lipophilic chain segment are introduced into a same molecule, so excellent emulsification performance of the anionic emulsifier is guaranteed, and the anionic emulsifier can be ideally applied to epoxy emulsion. The anionic emulsifier is a reactive anionic emulsifier and has strong emulsification and epoxidation capacity; and the anionic emulsifier can crosslink with an epoxy hardener so as to reduce the mobility of the anionic emulsifier in a paint film, so influence on water resistance is reduced.

The invention discloses a preparation method of a cellulose based conductive hydrogel. The preparation method comprises the following steps: (1) dissolving microcrystalline cellulose (MCC) with 1-Butyl-3-methylimidazolium chloride, reacting in a N2 protective atmosphere, and adding N,N-methylenebisacrylamide and benzoyl peroxide to prepare a pure microcrystalline cellulose hydrogel; and (2) soaking the pure microcrystalline cellulose hydrogel obtained in the step (1) in a mixed solution of FeCl3 and sodium p-benzenesulfonate, and immersing in a pyrrole water solution to prepare the cellulose based conductive hydrogel. The cellulose based conductive hydrogel prepared by the method has the advantages of uniform stable network structure, excellent conductivity, swelling property and heat stability, favorable electric conductivity and favorable swelling property; and the equilibrium swelling rate can be up to about 500%.

The invention discloses a polycarboxylic dispersant for oil-well cement and a preparation method of the polycarboxylic dispersant, and belongs to the technical field of oil-well cement additives. Thepolycarboxylic dispersant is a copolymer which is prepared from monomers composed of acrylic acid, N-vinyl pyrrolidone, itaconic acid, 2-acrylamido-2-methylpropanesulfonic acid, sodium vinyl sulfonate, sodium vinyl benzenesulfonate and allyl polyethylene glycol, wherein the weight-average molecular weight of allyl polyethylene glycol is 300-2400, and when the total mass of the monomers is 100%, the monomers comprises 0.5-20% of acrylic acid, 0.5-15% of N-vinyl pyrrolidone, 0.5-10% of itaconic acid, 5-60% of 2-acrylamido-2-methylpropanesulfonic acid, 0.5-30% of sodium vinyl sulfonate, 0.5-30% of sodium vinyl benzenesulfonate and 20-70% of allyl polyethylene glycol; the weight-average molecular weight of the polycarboxylic dispersant is 5000-250,000. The polycarboxylic dispersant has the advantages of good salt tolerance, high temperature resistance and rheological properties.

The invention provides a foam flooding agent which comprises the following components in parts by weight: 30-60 parts of A polyalkylsodium benzenesulfonate, 5-15 parts of B surfactant, 0-15 parts of C tetrakis(hydroxymethyl)phosphonium sulfate, 5-10 parts of D tween-20 and 25-55 parts of E water. The invention has the following advantages: 1. the activity is high, so the oil-water interface surface tension can be lowered without adding alkali; 2. the foam flooding agent can resist high temperature and high salt, can not be decomposed at 220 DEG C, and can resist total ion concentration; and 3. compared with other existing foam flooding agents, the 50 DEG C half life period of foam is up to 400 minutes, the foam volume is 330mL, and the foam flooding agent has favorable compatibility with other surfactants and enhances the oil recovery rate by 15% in laboratory simulation.

The invention discloses a preparation method of active carbon. The preparation method comprises the following steps: (1) performing drip washing on residues obtained in the process of producing ethanol through cellulose fermentation so as to wash off organic acids and inorganic salts in the residues; (2) soaking the washed residues in the step (1) by using a mixed solution of chitosan, glutaraldehyde and sodium dodecyl benzenesulfonate; (3) putting the soaked residues in the step (2) into a carbonizing furnace, heating to 150-200 DEG C in an air atmosphere, treating for 20-60min, then raising the temperature to 600-800 DEG C in an inert atmosphere, and carbonizing for 60-240min (4) after carbonizing, inflating water vapor or CO2 for treating for 10-30 min, and cooling to prepare the active carbon. By the preparation method, with biomass-fermented residues obtained during production of the cellulosic ethanol as raw materials, the active carbon with a high adsorptive property is prepared.

This invention relates to a construction binder, which is prepared by: adding carboxymethyl amylocellulose ether, hydroxypropyl methylcellulose, lignin fibers, sodium dodecyl benzenesulfonate, bentonite and polyacrylamide into a mixer, and dry-stirring for a certain time until complete mixing. This invention fully exploits the advantages of organic and inorganic materials. The obtained construction binder has such advantages as high binding strength, high water-retaining rate, good anti-crack performance, good waterproof performance, no odor and no toxicity, and is environmentally friendly. The construction binder can be used as an additive for powdery building materials such as dry-mixed heat-insulation mortar, anti-crack mortar, brushing gypsum, putty powder, construction binder and polymeric mortar.

The invention discloses an amlodipine benzenesulfonate tablet which is prepared by dissolving amlodipine benzenesulfonate and hydroxypropyl betadex into absolute ethyl alcohol so as to prepare a coating solution, coating blank pellets, subsequently uniformly mixing with pharmaceutically acceptable auxiliaries, and directly tabletting. An inclusion technique and a coating technique are combined, so that the influence of moisture to medicines in the production process of the preparation is avoided, and the tablet is coated and at the same time a hydroxypropyl betadex amlodipine benzenesulfonate clathrate compound is prepared, therefore, the stability is good; and meanwhile, as the clathrate compound is uniformly dispersed on the surface of the pellets, the contact area of dissolved mediums in dissolution measurement is increased, and the dissolution is rapid.

The invention provides a highly-efficient polyether-modified sulfamate water-reducing agent, and a preparation method thereof and application thereof. The main molecular chain of a sulfamate water-reducing agent is grafted with a polyether side chain, so the sulfamate water-reducing agent is improved in dispersion effect on cement particles and has enhanced slump loss resistance. The preparation method comprises the following steps: (1) with hydroxy-containing polyether of a specific structure as a solvent, subjecting aminobenzenesulfonate, hydroxybenzenesulfonate, salicylic acid, a phenol compound, urea and an aldehyde compound to a condensation reaction under the action of an acidic condensation catalyst so as to obtain a carboxyl-containing sulfamate water-reducing agent intermediate; and (2) subjecting the hydroxyl-containing polyether and the carboxyl-containing sulfamate water-reducing agent intermediate to an esterification reaction in the presence of a water-carrying agent andan esterification catalyst, removing the water-removing agent, and adding alkali for neutralization so as to obtain the highly-efficient polyether-modified sulfamate water-reducing agent. The preparedpolyether-modified sulfamate water-reducing agent has a molecular weight of 24,000 to 38,000.