43 results about "Thiosuccinic acid" patented technology

The present invention relates to compounds of the Formula (I), wherein X1 and X2 independently represent O, NH or S; R1 and R2 are independently selected from the group consisting of a C1-C30 hydrocarbyl group, an amino acid bonded via an amide bond or a peptide bonded via an amide bond each having up to 200 amino acids, the conjugated residue X1 or X2 in this case being NH, and hydrogen, both radicals R1 and R2 preferably not being H; and R3 is a residue selected from group consisting of —S—R6, wherein R6 is a C1-C30 hydrocarbyl group, at least one of R1 and R2 not being H when X1 and X2 are oxygen, —S—CH2—CH(NH2)(COOH) (cysteine-S-yl), a homologue or derivative (e.g. N-acetyl cysteine-S-yl) thereof, a peptide having up to 200 amino acids which contains at least one amino acid radical with a thiol group, preferably a cysteine radical, and is bonded via the thio sulfur, preferably via the cysteine sulfur (peptide-S-yl), coenzyme A which is bonded via a thiol group or fragments thereof, acyl carrier protein bonded via a thiol group, and dihydrolipoic acid bonded via a thiol group; and pharmaceutically acceptable salts thereof. The present invention also relates to the use of these compounds for preparing a drug, drugs containing the same and their use for the therapy of diseases such as autoimmune disease, NF-kappaB mediated diseases, psoriasis, psoriatic arthritis, neurodermitis, enteris regionalis Crohn, cardiac insufficiency, chronic obstructive pulmonary diseases and asthma and in transplantation medicine.

The present invention relates to compounds of the formula (I) wherein X1 and X2 independently represent O, NH or S, R1 and R2 are independently selected from the group consisting of a C1-C30 hydrocarbyl group, an amino acid bonded via an amide bond or a peptide bonded via an amide bond each having up to 200 amino acids, the conjugated residue X1 or X2 in this case being NH, and hydrogen, both radicals R1 and R2 preferably not being H, wherein R3 is a residue selected from group consisting of —S—R6, wherein R6 is a C1-C30 hydrocarbyl group, at least one of R1 and R2 not being H when X1 and X2 are oxygen, —S—CH2—CH(NH2)(COOH) (cysteine-S-yl), a homologue or derivative (e.g. N-acetyl cysteine-S-yl) thereof, a peptide having up to 200 amino acids which contains at least one amino acid radical with a thiol group, preferably a cysteine radical, and is bonded via the thio sulfur, preferably via the cysteine sulfur (peptide-S-yl), coenzyme A which is bonded via a thiol group or fragments thereof, acyl carrier protein bonded via a thiol group, and dihydrolipoic acid bonded via a thiol group, and pharmaceutically acceptable salts thereof. The present invention also relates to the use of these compounds for preparing a drug and drugs containing the same.

Arsenic trioxide, an inorganic compound, is commercially available anti-cancer agent but it carries significant toxicity. Organic arsenicals, on the other hand, are much less toxic, to the extent that the methylation of inorganic arsenic in vivo into organic arsenicals has been considered a detoxification reaction. New organic arsenic derivatives have been synthesized, including S-dimethylarsino-glutathione, S-dimethylarsino-thiosuccinic acid and S-dimethylarsino-thiobenzoic acid, and established its potent in vitro cytotoxic activity against numerous human tumor cell lines, both of solid and hematological origin, as well as against malignant blood cells from patients with leukemia. Results form a basis for the development of S-dimethylarsino-glutathione, S-dimethylarsino-thiosuccinic acid, S-dimethylarsino-thiobenzoic acid, and other organic arsenicals as an anti-cancer therapy, combining high efficacy with very low, if any, toxicity.

Arsenic trioxide, an inorganic compound, is commercially available anti-cancer agent but it carries significant toxicity. Organic arsenicals, on the other hand, are much less toxic, to the extent that the methylation of inorganic arsenic in vivo into organic arsenicals has been considered a detoxification reaction. New organic arsenic derivatives have been synthesized, including S-dimethylarsino-glutathione, S-dimethylarsino-thiosuccinic acid and S-dimethylarsino-thiobenzoic acid, and established its potent in vitro cytotoxic activity against numerous human tumor cell lines, both of solid and hematological origin, as well as against malignant blood cells from patients with leukemia. Results form a basis for the development of S-dimethylarsino-glutathione, S-dimethylarsino-thiosuccinic acid, S-dimethylarsino-thiobenzoic acid, and other organic arsenicals as an anti-cancer therapy, combining high efficacy with very low, if any, toxicity.

A demetalating agent for hydrocarbon oil contains one mor mixture of more than two of formic acid, acetic acid, propionic acid and butanoic acid, one or mixture of butanedioic acid and fumaric acid or maleic acid, polyacrylamide, one or mixture of more than two of S-carboxyethyl thiosuccinic acid, 2-mercaptobenzothiazole, hydroxyethylidene biphosphonic acid and 2-hydroxyphosphion acetic acid, andwater.

Arsenic trioxide, an inorganic compound, is commercially available anti-cancer agent but it carries significant toxicity. Organic arsenicals, on the other hand, are much less toxic, to the extent that the methylation of inorganic arsenic in vivo into organic arsenicals has been considered a detoxification reaction. New organic arsenic derivatives have been synthesized, including S-dimethylarsino-glutathione, S-dimethylarsino-thiosuccinic acid and S-dimethylarsino-thiobenzoic acid, and established its potent in vitro cytotoxic activity against numerous human tumor cell lines, both of solid and hematological origin, as well as against malignant blood cells from patients with leukemia. Results form a basis for the development of S-dimethylarsino-glutathione, S-dimethylarsino-thiosuccinic acid, S-dimethylarsino-thiobenzoic acid, and other organic arsenicals as an anti-cancer therapy, combining high efficacy with very low, if any, toxicity.

The present invention relates to a polishing composition more suitable for use in polishing a substrate for a magnetic disk. The polishing composition contains an abrasive which contains at least one component selected from the group consisting of aluminum oxide, silicon dioxide, cerium oxide, zirconium oxide, titanium oxide; silicon carbide, and silicon nitride, a polishing accelerator which contains at least one component selected from the group consisting of carboxyethyl thiosuccinic acid and its salts, and water. The polishing accelerator may further contain other components e.g. malic acid, citric acid. Also shown is a method of polishing a substrate using the above polishing composition.

The invention discloses a novel refining agent for textile, which is characterized by comprising the following components in parts by mass: 20-30 parts of fatty alcohol polyethenoxy ether, 3-10 parts of carboxyethyl thiosuccinic acid, 7-11 parts of alkyl polyglucoside, 3-8 parts of polyethyleneglycol, 2-8 parts of buffer solution, 3-7 parts of tea saponin, 10-15 parts of sodium hydroxide solution, 5-8 parts of oxydol, 3-6 parts of emulsifier, 3-6 parts of preservative, 4-8 parts of flame-retardant additive and 25-35 parts of ionized water. The carboxyethyl thiosuccinic acid can reduce the foam generation quantity, thereby ensuring the whiteness of the textile; the buffer solution can effectively regulate the pH value of the refining agent, so that the pH value does not need to be regulated by adding sulfuric acid and acetic acid, thereby reducing the number of times of water flushing; the preservative enables the pretreated textile to have certain bacterial resistance, so that the textile can inhibit bacteria, mold and the like; and the flame-retardant additive enables the pretreated textile to have certain flame retardancy.

The invention relates to a scale cleaning agent for a cinder flushing water system of an iron-making plant. The scale cleaning agent contains the following components in percentage by mass: 5%-45% of S-carboxyethyl thiosuccinic acid, 1%-45% of polyether polyamino methylene phosphonate N-oxide, 6%-40% of an acrylic acid-hydroxypropyl acrylate copolymer, 20%-35% of hydrochloric acid, 1%-25% of diethylenetriamine pentamethylene phosphate and 0.1%-3% of diisooctyl cis-butenedioate sulfonate, wherein the mass concentration of hydrochloric acid is 30%-36%. The invention further relates to a cleaning method for the cinder flushing water system of the iron-making plant. According to the scale cleaning agent, scale of equipment and pipelines in the cinder flushing water system of the iron-making plant can be effectively cleared; the scale cleaning agent has the advantages that the pertinence is strong, a formula is environment-friendly, the cost is low, and the preparation is simple; and the cleaning method has the advantages that the operation steps are simple and feasible, the cleaning is flexible, and use equipment is few.

The invention discloses a liquid detergent, which comprises the following components in part by mass: 20 to 30 parts of sulfo sodium succinate, 3 to 5 parts of fatty alcohol polyoxyethylene ether sulfate, 5 to 10 parts of beef tallow alkyl trimethylammonium chloride, 7 to 15 parts of triethanolamine, 2 to 3 parts of sodium citrate, 1 to 2 parts of sodium carbonate, 1 to 2 parts of cellulase and 70 to 80 parts of water. The liquid detergent has the advantages that: decontamination and static electricity resistance can be performed at the same time during washing, clothes after washing are rinsed for two times with 30 liters of the water, the third time of the rinsing has no foams, and the rinsing speed is high; and the clothes washed by using the liquid detergent cannot be discolored so that labor inputs can be reduced, water resources can be saved, the rinsing time can be reduced, and the washed clothes are soft and fragrant.

The invention discloses an aqueous single-component organic zinc-rich coating and a preparation method and an application thereof. The aqueous single-component organic zinc-rich coating comprises 10-20 parts of aqueous resin, 70-100 parts of modified zinc powder, 0.5-1 part of fumed silica, 5-8 parts of co-solvent, 0.9- 2.5 parts of auxiliary agent and 0.5-2 parts of corrosion inhibitor; the modified zinc powder is corrosion-resistant modified zinc powder; the corrosion inhibitor is a compound solution of 2-benzothiazole thiosuccinic acid and molybdate. The aqueous single-component organic zinc-rich coating is successfully prepared by selecting the modified zinc powder and the sulfur-containing high-efficiency corrosion inhibitor in combination with other components; the prepared aqueous single-component organic zinc-rich coating has good storage stability, is convenient to construct and has good early corrosion resistance.

The invention discloses a sewage anaerobic scale prevention interferon and a preparing method thereof. Effective components of the interferon comprise carboxyethyl thiosuccinic acid, dithiocarbamate,ethydiaminedhephen acetic-Na, fatty alcohol-polyoxyethy, cobalt chloride and desalted water. The preparing method comprises the steps of dissolving and uniformly stirring the desalted water and the cobalt chloride at the room temperature of 40 DEG C to obtain a cobalt chloride solution; sequentially adding the carboxyethyl thiosuccinic acid, ethydiaminedhephen acetic-Na, sodium dithiocarbamate andfatty alcohol-polyoxyethy into the cobalt chloride solution, conducting uniform stirring and mixing, conducting standing for 20-30 minutes, and then conducting filtering and subpackaging to obtain the sewage anaerobic scale prevention interferon. According to the sewage anaerobic scale prevention interferon, when a UASB reactor removes sewage COD, clogging and scaling do not occur to a circulating pipeline or an overflow pipe, and the purpose that the reactor safely runs for a long term is achieved.

A demetalating agent for hydrocarbon oil contains one mor mixture of more than two of formic acid, acetic acid, propionic acid and butanoic acid, one or mixture of butanedioic acid and fumaric acid or maleic acid, polyacrylamide, one or mixture of more than two of S-carboxyethyl thiosuccinic acid, 2-mercaptobenzothiazole, hydroxyethylidene biphosphonic acid and 2-hydroxyphosphion acetic acid, and water.

The invention relates to a copper printed circuit board cleaning agent prepared from the raw materials of, by weight: 1-2 parts of copper sulfate, 2-3 parts of sodium carbonate, parts of 1-2 sodium gluconate, 2-4 parts of citric acid, 30-35 parts of acetone, 1-2 parts of sodium dodecyl benzenesulfonate, 3-4 parts of coconut oleic acid monoethanolamide, 3-4 parts of dioctyl sodium sulfosuccinate, 4-5 parts of an auxiliary agent, and 100-120 parts of deionized water. The cleaning agent adopts various surfactants such as anionic surfactants and nonionic surfactants, and is an emulsion formed with water. The cleaning agent has excellent dissolving capacity upon rosin and organic compounds, and has good cleaning effect. Copper sulfate is adopted, and a protective effect is provided for a circuit board. With the cleaning agent, the circuit board is prevented from being corroded. The water-emulsion cleaning agent has the advantages of low cost, environment friendliness, no pollution, and direct discharge. With the auxiliary agent, a protective film can be formed on the surface of the circuit board, such that air is isolated, and the circuit board is prevented from being corroded by water and other molecules in the atmosphere. With the cleaning agent, oxidation and short-circuit can be prevented, and the next step of manufacturing process can be conveniently carried out.

The invention discloses a composite scale inhibitor for blast furnace gas washing water, which is composed of a dispersant S and a scale inhibitor P that are prepared respectively, wherein the dispersant S includes, by mass, 1-3% of sodium polymethacrylate, 3-5% carboxymethylcellulose, 5-8% of sodium alginate, 0.5-2% of sodium laurylphosphate, and the balanced being water; the scale inhibitor P includes, by mass, 6-8% of sodium ethylenediaminetetramethylenephosphonate, 5-8% of S-carboxyethyl thiosuccinic acid, 3-5% of polyaspartic acid, 4-6% of ethylenediaminetetramethylenephosphonic acid, 5-8% of ammonium tetramethyloxalate, 3-6% of 4-hydroxybutyl acrylate, and the balance being water. The invention also discloses a preparation and use method of the composite scale inhibitor. The composite scale inhibitor has the scale inhibition rate of more than 96% on the blast furnace gas washing water, thereby achieving a stable scale inhibition effect.

The invention provides a cleaning agent used for integrated circuit substrate silicon wafers. The cleaning agent is prepared from the following raw materials in parts by weight: 3-4 parts of methenamine, 2-3 parts of sodium citrate, 1-2 parts of sodium carbonate, 2-3 parts of cellulase, 3-4 parts of sodium thiodisuccinate, 30-40 parts of ethanol, 4-5 parts of n-butyl alcohol, 1-2 parts of polyoxyethylene laurate, 3-5 parts of polyoxyethylene lauryl ether, 4-5 parts of auxiliary and 100-120 parts of deionized water. The cleaning agent has the beneficial effects that the surfactant of the cleaning has a good synergistic effect; the cleaning agent has strong capability of dissolving organic matters and metal ions and strong capability of removing inorganic matters, has a good oxide film removing effect and small corrosivity, is thorough in cleaning effect and is suitable for cleaning the integrated circuit substrate silicon wafers; the auxiliary can form a protective film on the surfaces of the silicon wafers to isolate air to prevent water and other molecules in the atmosphere from corroding the silicon wafers; the cleaning agent is resistant to oxidation and is convenient for operation of the next preparation process.

The invention belongs to the technical field of preparation of metal corrosion inhibitors, and particularly relates to a mixed ionic liquid corrosion inhibitor and a preparation method and application thereof. The mixed ionic liquid corrosion inhibitor is obtained by taking A and B as raw materials through quaternization reaction, wherein A is organic amine, and B is carboxylic acid or halogenated hydrocarbon. The component A is selected from urotropine or quinoline or pyridine or 1,8-naphthyridine or triethylene diamine or diethylenetriamine or triethanolamine or chitosan or dimethylaminoethyl methacrylate; and B is selected from carboxyethyl thiosuccinic acid or mercaptopropionic acid or maleic acid or benzyl chloride. The mixed ionic liquid corrosion inhibitor can play a good corrosion inhibition role in a high-concentration acid environment, and the high-concentration acid environment is closer to an industrial corrosion inhibition environment, so that the mixed ionic liquid corrosion inhibitor is more suitable for industrial corrosion inhibition.

The invention provides a low-phosphorus environment-friendly corrosion and scale inhibitor applied to a low-temperature circulating water system. The low-phosphorus environment-friendly corrosion and scale inhibitor applied to the low-temperature circulating water system comprises the following components in parts by mass: 8 to 27 parts of 2-hydroxyphosphonoacetic acid, 13 to 31 parts of carboxyethyl thiosuccinic acid, 5 to 20 parts of disodium tetraborate decahydrate, 7 to 25 parts of polymethylacrylic acid, 1 to 18 parts of zinc chloride and 29 to 60 parts of deionized water. Compared with the prior art, the low-phosphorus environment-friendly corrosion and scale inhibitor has the beneficial effects of suitability for the low-temperature circulating water system and excellent effect of inhibiting low-temperature scale; the composite agent has better effect of inhibiting calcium carbonate, calcium phosphate and zinc salt deposition along with the increment of use amount under the condition of low temperature; the composite agent has low phosphorus content and meets the national environmental protection requirement; the components of the composite agent have synergistic effect; meanwhile, the medicament prepared by the method provided by the invention is more stable and has longer effective life.

The invention discloses a novel anaerobic modifier and a preparation method thereof. The novel anaerobic modifier is prepared from the following components in parts by weight: 35-45 parts of inositolhexaphosphate, 15-25 parts of polyhydroxycarboxylic acid, 8-12 parts of carboxyethyl thiosuccinic acid, 10-15 parts of a maleic acid-acrylic acid copolymer, 1-2 parts of dodecylbenzene sulfonic acid,1-2 parts of nickel nitrate and the balance of desalted water. The anaerobic modifier has advantages that a circulating pipe network and an outer overflow pipe of an anaerobic reactor are not blockedand not bonded to generate crystal substances; the purpose of long-term safe operation of the reactor is achieved; the characteristic that the existing landfill leachate generally contains animal andvegetable oil is completely matched; the problem of crystallization blockage of an anaerobic reactor pipe network can be solved; under normal addition metering (100ppm), the water quality crystallization rate is delayed by 90% or above, and if the addition metering is increased to 130pp or above for use, old crystals in the pipe network can be slowly eliminated, and an effect of cleaning the old black crystals in the pipe network is achieved, so that the pipe network is smooth step by step, and the anaerobic oxygen reactor is recovered to operate according to design parameters.

The invention relates to a sewage treatment composite medicament and a preparation method thereof, and belongs to the technical field of sewage treatment. The technical scheme adopted is: a sewage treatment composite medicament comprises, by mass, 85-94% of bentonite, 0.5-2.5% of sodium tartrate, 0.5-2.5% of carboxyethyl thiosuccinic acid, 0.4-1.6% of chitosan and 4-9% of stearate, wherein the bentonite is inorganic modified bentonite. The formulation of the medicament has the advantages of simple structure and low cost. The product used or sewage treatment is environmental and safe, has goodadsorption effect and has effects of corrosion inhibition, scale inhibition and bacteriostasis.

The invention discloses a corrosion-free cleaning agent for metal surfaces. The corrosion-free cleaning agent is prepared from the following raw materials in parts by weight: 1.5-2.8 parts of chloro-m-xylenol, 0.8-2.3 parts of defoamer, 1.2-3.4 parts of potassium diphosphate, 1.2-1.5 parts of deionized water, 1.5-2.8 parts of hydrocarbyl acetic acid, 3.1-6.4 parts of sodium thio-succinate, 3.5-6.7 parts of polyvinyl pyrrolidone and 4.5-5.8 parts of hydrophobic modified thickener. The corrosion-free cleaning agent has the beneficial effects that the surface tension of water can be remarkably lowered, so that the surface of a workpiece can be easily wetted and is strong in seepage force; the interface condition between oil stains and the workpiece can be more effectively changed, so that oil-in-water type granules are formed by the oil stains through emulsifying, dispersing, rolling and solubilization and are cleaned; the formula is scientific and reasonable, the foam is little during cleaning, the cleaning capability is strong, the continuity is good, the speed is high, and the service life is long.

The invention discloses a cookware detergent, which consists of the following components in part by weight: 5 to 7 parts of lauryl polyoxyethylene ether, 2 to 5 parts of sodium dodecyl benzene sulfonate, 3 to 5 parts of fatty alcohol-polyoxyethylene ether (n=9), 0.5 to 1.5 parts of sulfo-sodium succinate, 2 to 5 parts of kaolin, 40 to 50 parts of feldspar powder and 8 to 10 parts of sodium tripolyphosphate. The cookware detergent has a strong cleaning effect on cookware, and is particularly suitable for cleaning baking grease and protein residue on aluminum cookware.

The invention relates to a calcium-silicon mixed scale removing agent for an alkali-surfactant-polymer mechanical recovery well. The calcium-silicon mixed scale removing agent for the alkali-surfactant-polymer mechanical recovery well is prepared from the following components in percentage by mass: 9 to 13 percent of carboxyethyl thiosuccinic acid, 6 to 9 percent of ammonium hydrogen fluoride, 0.9 to 1.3 percent of benzyl quinolinium chloride, 0.2 to 0.5 percent of diisobutyl sodium naphthalene sulfonate and the balance of water. According to the calcium-silicon mixed scale removing agent for the alkali-surfactant-polymer mechanical recovery well, no secondary precipitates are generated in a scale removing process, and the corrosion rate is 0.43g / (m<2>.h). The calcium-silicon mixed scale removing agent is suitable for removing calcium-silicon mixed scales mainly containing crystalline calcium carbonate and amorphous silicon dioxide common for the alkali-surfactant-polymer mechanical recovery well, and is complete in scale removal and low in corrosion rate, the scale removing rate can reach over 80 percent, and no secondary precipitates are generated in the scale removing process.

The invention discloses an efficient scale and corrosion inhibitor for circulating water and a preparation method of the efficient scale and corrosion inhibitor. The efficient scale and corrosion inhibitor is prepared from the following raw materials in parts by weight: 30 to 45 parts of polycarboxylic acid sulfonate quadripolymer, 20 to 35 parts of adsorptive macromolecular corrosion inhibitor, 15 to 25 parts of S-carboxyethyl thiosuccinic acid, 3 to 8 parts of azole derivative, 10 to 15 parts of polycarboxylic acid and salt thereof and 0 to 20 parts of deionized water. The polycarboxylic acid sulfonate quadripolymer is formed by copolymerization of itaconic acid, aconitic acid, sodium hypophosphite and 2-acryloyl-2-sodium methylpropanesulfonate. The pure organic efficient scale and corrosion inhibitor has a small amount of efficient scale and corrosion inhibition performance and wide practicability, has an excellent corrosion inhibition effect on equipment made of carbon steel, stainless steel, copper and the like, and can effectively prolong the service life of the equipment.

The invention discloses an environment-friendly spinning refining agent for mulberry silks, and a preparation method of the refining agent. The environment-friendly spinning refining agent is prepared from the following raw materials in parts by weight: 10-20 parts of C16 secondary alkyl sodium sulfonate, 10-15 parts of carboxyethyl thiosuccinic acid, 5-12 parts of nonylphenol ethoxylate, 5-10 parts of acetic acid vinyl ester, 1-3 parts of glucose, 3-7 parts of glycerinum, 2-6 parts of sodium aminosalicylate, 1-4 parts of sulfonated succinate diamide salt, 2-5 parts of malic acid, 2-4 parts of potassium sorbate, 1-3 parts of cellulase, 1-4 parts of Double palmitoyl ethylenediamine dipropionate, 1-5 parts of trimethylolpropane, 1-2 parts of sodium tripolyphosphate, 1-3 parts of an anionic surfactant, 2-4 parts of an antifoaming agent, and 1-4 parts of an emulsifying agent. The prepared refining agent has good emulsion and dispersion performances, is small in stimulation to silk textures, and has the function of softening textures. In addition, the invention also discloses a corresponding preparation method.

The invention discloses an oil-soluble corrosion inhibitor for gas well tubing and a preparation method thereof, which is used to solve the problem that the existing imidazoline corrosion inhibitors cause imidazoline ring opening under long-term storage, thereby affecting the stability and anticorrosion effect of the corrosion inhibitors The problem. According to the mass fraction, its raw materials are composed of 20-30% main agent and 70-80% compound, wherein the main agent is imidazoline Schiff base, and the compound is the total mass of oil-soluble corrosion inhibitor for gas well tubing Calculated, the compound is composed of 10-15% aromatic azole, 5-10% hydroxyethyl thiosuccinic acid, and 45-65% solvent. The corrosion inhibitor obtained in the present invention is suitable for gas well tubing with low water content, can be quickly adsorbed on the inner wall of the pipeline, and can be adsorbed in the gas well tubing to form a dense corrosion inhibitor protective film. 2 Carbon steel pipelines and equipment in the gas well environment have a good protection effect. It has the characteristics of good planar spreadability and good compatibility with diesel oil, crude oil and condensate oil.

The invention discloses a flame-retardant heat-resistant polyvinyl chloride material and a preparation method thereof. The flame-retardant and heat-resistant polyvinyl chloride material is prepared from the following raw materials in parts by weight: 100 parts of polyvinyl chloride resin powder, 10 to 18 parts of butadiene rubber, 5 to 10 parts of maltodextrin, 0.3 to 0.9 part of sodium diisobutylnaphthalene sulfonate, 0.1 to 0.16 part of sodium bis-2-ethylhexylthiosuccinate, 0.15 to 0.35 part of zinc borate, 0.1 to 0.2 part of an antioxidant, 0.2 to 0.5 part of methyl silicone oil and 0.4 to0.8 part of a vulcanizing agent. The preparation method of the flame-retardant heat-resistant polyvinyl chloride material comprises the following steps: S1, preparing raw materials; s2, mixing the raw materials; and S3, plasticizing and granulating the mixed raw materials. The polyvinyl chloride material provided by the invention has good mechanical properties, heat resistance, flame retardancy and processing formability, and the preparation method is simple, easy for industrial production and environment-friendly.

The invention discloses an environment-friendly spinning refining agent for mulberry silks, and a preparation method of the refining agent. The environment-friendly spinning refining agent is prepared from the following raw materials in parts by weight: 10-20 parts of C16 secondary alkyl sodium sulfonate, 10-15 parts of carboxyethyl thiosuccinic acid, 5-12 parts of nonylphenol ethoxylate, 5-10 parts of acetic acid vinyl ester, 1-3 parts of glucose, 3-7 parts of glycerinum, 2-6 parts of sodium aminosalicylate, 1-4 parts of sulfonated succinate diamide salt, 2-5 parts of malic acid, 2-4 parts of potassium sorbate, 1-3 parts of cellulase, 1-4 parts of Double palmitoyl ethylenediamine dipropionate, 1-5 parts of trimethylolpropane, 1-2 parts of sodium tripolyphosphate, 1-3 parts of an anionic surfactant, 2-4 parts of an antifoaming agent, and 1-4 parts of an emulsifying agent. The prepared refining agent has good emulsion and dispersion performances, is small in stimulation to silk textures, and has the function of softening textures. In addition, the invention also discloses a corresponding preparation method.

The invention belongs to the field of application of fine chemicals, and particularly relates to a continuous synthesis method of carboxyethyl thiosuccinic acid. Beta-mercaptopropionic acid and maleicanhydride are used as reaction raw materials, green solvent water is used as a reaction medium, a tubular reactor is used for continuous production, on the basis that reaction requirements are met, the price is low, obtaining is easy, and meanwhile due to the water solubility of CETSA, recycled mother liquor can be used indiscriminately. The reaction is green and efficient; and meanwhile, the problem that the product contains phosphorus at present is solved. The technological process is simple, the obtained product is high in quality stability, the technology is environmentally friendly, andthe product content is high. The defects of complex traditional process flow, serious three-waste pollution and low product content are avoided.