62 results about "Thiodiglycol" patented technology

A silver and silver alloy plating bath, includes (A) a soluble salt, having a silver salt or a mixture of a silver salt and a salt of a metal such as tin, bismuth, indium, lead, and the like; and (B) a particular aliphatic sulfide compound, such as thiobis(diethyleneglycol), dithiobis(triglycerol), 3,3′-thiodipropanol, thiodiglycerin, 3,6-dithiooctane-1,8-diol, and the like, which contain at least one or more of an ether oxygen atom, a 1-hydroxypropyl group, a hydroxypropylene group, or two or more of a sulfide bond in the molecule, and not containing a basic nitrogen atom. Compared to baths containing aliphatic monosulfide compounds, such as thiodiglycol or beta-thiodiglycol, which do not contain an ether oxygen atom, 1-hydroxypropyl group, a hydroxypropylene group, or two or more of a sulfide bond in the molecule, by having these particular compounds, the plating bath of the present invention has excellent stability over extended time, excellent co-deposition of silver and various metals, and excellent appearance of the electrodeposition coating.

The invention discloses a preparing method of 3, 4-ethylene dioxide thiofuran (EDOT), which comprises the following steps: adopting reasonable processing line; choosing thiodiglycol as initial raw material; esterifying; condensing; Williamson; hydrolyzing; decarboxylating; getting the end product. This invention possesses simple craft, low cost and high receiving rate, which is fit for commercial product.

The invention discloses fluorescent disperse dye ink for inkjet printing and a preparation method of the fluorescent disperse dye ink. The ink consists of a disperse dye, a fluorescent agent, a versatile dispersant, an organic solvent, a wetting agent and a surfactant. The preparation method comprises the following steps: stirring the disperse dye, the fluorescent agent, sodium lignin sulfonate, diethylene glycol and deionized water at a low speed by using a stirrer, and grinding in a grinding dispersion mill, thus obtaining disperse dye mill base with a solid content of 15 percent; stirring the dye mill base and the deionized water in the stirrer, adding an organic solvent formed by mixing isopropanol, thiodiglycol and biglycol ether and the wetting agent and the surfactant, and adding a preservative after the PH value is regulated to be 8-9; and filtering the mixed ink by using a millipore filter membrane, and further filtering the filtrate through the millipore filter membrane. The fluorescent disperse dye ink can be subjected to jet printing onto heat transfer paper from a piezoelectric inkjet printing machine, or is directly subjected to jet printing onto a chemical and blended fabric, and is suitable for large-scale industrial production.

The invention belongs to the technical field of powder coating, particularly relates to high-leveling polyester resin, and further discloses a preparation method of the high-leveling polyester resin and application of the high-leveling polyester resin to preparation of HAA system powder coating. The high-leveling polyester resin provided by the invention is formed through copolymerization of diethyl phenyl malonate, a citrate monoester compound, diglycolic acid, thiodiglycol, octyl glycerol, neopentyl glycol and hexahydrophthalic anhydride. The high-leveling polyester resin, has a soft chain segment, high molten state flowability and low high-temperature viscosity, and can be applied to preparation of HAA curing system powder coating.

The invention provides a preparation method of thiodiethanethiol. The preparation method comprises the following steps: a) mixing thiodiglycol, thiourea and hydrochloric acid to carry out a salt forming reaction and then adding an alkaline solution for hydrolysis reaction to obtain a reaction mixture; b) skimming the reaction mixture obtained in the step a) to separately obtain a thiodiethanethiolcoarse product and reaction wastewater; and then washing the thiodiethanethiol coarse product to separately obtain thiodiethanethiol and washing waste water; and c) separately flocculating the reaction waste water and the washing waste water obtained in the step b) to obtain circulating water. Compared with the prior art, the preparation method provided by the invention has relatively high product quality and yield, and can achieve circular use of waste water. Experimental results verify that the content of thiodiethanethiol prepared by the preparation method is stabilized at over 99%, and the yield is over 98%, and zero discharge of the waste water is achieved.

The invention discloses a synthetic method for epoxy end group polythioether liquid rubber. The method comprises the following steps: synthesizing sulphydryl end group polythioether liquid rubber by using thiodiglycol, hydroxyethyl-2-hydroxypropyl thioether and the like as main monomers; then using polyethylene glycol diglycidyl ether resin as a transforming agent so as to transform a sulphydryl end group into an epoxy end group so as to finally generate the end group polythioether liquid rubber. The technology has the advantages that the polyethylene glycol diglycidyl ether resin is adopted as the transforming agent of the end group, the defects that the viscosity of a sulphydryl in traditional epoxy modification technology is high, solvents of toluene, butanone and the like are needed to perform dilution, the reaction exotherm is violent, and a side effect is easy to generate are overcome; reactions are smooth, the product quality is easy to control, the viscosity of the generated epoxy end group polythioether liquid rubber is moderate, and the stability is good; the strength of epoxy resin and the toughness and the heat resistance of polythioether rubber are reserved after the end group is transformed, so that the brittleness of the epoxy resin is improved, and the adhesive property of materials is improved.

The invention discloses high-temperature-aging-resistant rubber and belongs to the field of materials. The rubber is prepared from natural rubber, chloroprene rubber, butadiene-acrylonitrile rubber, a performance additive, zinc oxide, stearic acid, carbon black, mica powder, iso-propyl xanthogen disulfide, microcrystalline wax, sulphur, 2,2'-thiodiglycol, 3-5 parts of epoxy fatty acid polyol ester and rosin texanol ester alcohol. The performance additive comprises 2-heptadecyl-N-aminoethyl imidazoline epoxypropane, polybenzimidazole benzophenanthrene phenanthroline and polyquinoline. 2-heptadecyl-N-aminoethyl imidazoline epoxypropane, polybenzimidazole benzophenanthrene phenanthroline and polyquinoline serve as the performance additive, and the high-temperature-aging resistance of the rubber is greatly improved. When iso-propyl xanthogen disulfide serves as an accelerant, 2,2'-thiodiglycol serves as an anti-aging agent, and a combination of epoxy fatty acid polyol ester and rosin texanol ester alcohol serves as a plasticizer, the high-temperature-aging resistance of the rubber is more excellent.

A water-based ink for stencil printing, which comprises an unsaturated carboxylic acid-based water-soluble polymer and triethylene glycol. The ink preferably further comprises β-thiodiglycol as an optional component.

The invention discloses a sound-absorbing cotton material and a preparation method thereof. The cotton material comprises the following components in parts by weight: 100-120 parts of polypropylene, 0.05-1 part of a hindered phenolic antioxidant, 0.05-1 part of a phosphite antioxidant, 0.02-0.5 part of an acid absorbing agent, and 0.05-1 part of a combination synergist. According to the invention,combined action of the hindered phenolic antioxidant and the phosphite antioxidant in the components can realize higher stability and oxidation resistance of the component material; and the combination synergist selects thiodiglycol distearate and/or distearyl thiodipropionate, so that synergistic effects produced between the combination synergist and the hindered phenolic antioxidant enhance theoxidation resistance of the material, and enhances the yellowing resistance of the material.

An insulated DC-cable and method for production of an insulated DC-cable with an insulating system comprising an extruded cross-linked polyethylene based insulation disposed around the conductor. The extruded polyethylene based compound comprises additives such as cross-linking agent, scorch retarding agent and antioxidant. The scorch retarding agent comprises a compound (D), 2,4-diphenyl-4-methyl-pentene-1 and the antioxidant comprises a compound (C), a diester of 3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionicacid and thiodiglycol. The compounded polyethylene based resin composition is extruded and cross-linked at a temperature and for a period of time sufficient enough to cross link the insulation. The temperature and the period of time upon extrusion and cross-linking are limited so as to substantially suppress or essentially avoid undesired polar by-products being formed in the cross-linked composition.

The invention relates to a preparation method of N-(4-(2-ethylhexyloxy) phenyl)-1, 1-dioxothiomorpholino. The method is characterized by comprising the following steps of: adding 10 parts by weight of thiodiglycol and 10 parts by weight of water to a reaction kettle, then adding 1-2 parts by weight of quaternary ammonium salt as a catalyst, adding 65-75 parts by weight of hydrogen peroxide dropwisely into the reaction kettle, after dropping, preserving the heat of the mixture and allowing it to stand for one hour so as to generate bishydroxyethylsulfone, adding p-aminophenol to conduct a condensation reaction for 3 hours, then adding bromoisooctane for a further condensation reaction for 3 hours, pouring n-heptane into a product stock solution, stirring the solution and allowing it to stand, taking out the extraction phase and evaporating the solvent to dryness, thus obtaining a finished product. Application of the method provided in the invention can prepare products with an overall yield of over 86% and effective content of more than 98%, so the method is completely applicable to large scale industrial production. With substantial economic benefit, social benefit and ecological benefit, the method provided in the invention fully meets the requirements of safety, environmental protection and high efficiency that are advocated by the nation in developing low carbon economy.

The invention discloses a procaine hydrochloride drug intermediate p-nitrobenzoic acid synthesis method, which comprises: adding 4-nitro-6-hydroxybenzyl alcohol in a reaction container, increasing thetemperature of the solution, controlling the stirring, adding a 3-methyl-2-butanone solution and samarium oxide powder, increasing the temperature of the solution, continuously carrying out the reaction, reducing the temperature of the solution, filtering, washing multiple times with a potassium sulfate solution, washing multiple times with an oxalic acid solution, washing multiple times with a 2-chloro-2-methylpropane solution, re-crystallizing in a thiodiglycol solution, and dehydrating with a dehydrating agent to obtain the finished product p-nitrobenzoic acid.

The invention relates to a synthesis method and production technology for bis (2-mercaptoethyl) sulfide. The method uses thiodiglycol and thiourea as raw materials to synthesize target products after two reacting steps of substitute salifying and alkaline hydrolysis, product purity is larger than 99%, total yield of the two steps is improved to more than 98% on the basis of 80% in the existing technology. The synthesis method has the advantages of being free of rigor conditions in production, smooth and safe in operation, less in three wastes, high in product purity, low in production cost and the like and is suitable for being applied to industrial production.

The invention discloses high adhesion printing ink. The high adhesion printing ink is characterized by being prepared from the following raw materials in parts by weight: 20 to 30 parts of chlorinatedpolypropylene resin, 10 to 20 parts of polyacrylic resin, 9 to 24 parts of organic solvent, 1 to 5 parts of inorganic filler, 0.2 to 1.0 part of modifier, 0.1 to 0.5 part of cosolvent and 1 to 5 parts of disperse dye, wherein the solvent is prepared by mixing diethylene glycol, thiodiglycol and ethyl acetate in a mass ratio of 1 to 1 to 1, and the inorganic filler is less than or equal to 10 mu min particle size. The printing ink does not need to be doped with graphene, and is low in cost and high in adhesion fastness. The invention correspondingly discloses a preparation method of the highadhesion printing ink. The printing ink prepared with the method has the advantages of high adhesion, and flatness and smoothness after film formation.

The invention discloses a method for continuously synthesizing thiodiglycol. The method is based on a tubular reactor, ethylene oxide and sulfureted hydrogen serve as raw materials, the reaction is performed at 0-40 DEG C, and thiodiglycol is synthesized by liquid phase catalysis at normal temperature and normal pressure. The operation is simple, the conditions are mild, the method is green, environmentally friendly and free of three wastes, and a catalyst can be reused; the reaction standing time is short, no back-mixing occurs, no by-product is generated, slightly excessive ethylene oxide can be recycled, the production cycle is shortened, and the production cost is reduced. The tubular reactor can react continuously, the product purity can reach 98-99.5%, and the yield of thiodiglycol can reach 92-99% according to hydrogen sulfide.

The invention discloses an oxidation resistance reinforcing strip metallic aluminum pigment. The pigment is prepared from the following raw materials in parts by weight: 70-75 parts of flaky aluminum powder, 14-15 parts of methacryloxy propyl trimethoxyl silane, proper amount of absolute ethyl alcohol, 28-30 parts of trimethylolpropane triacrylate, 1-1.2 parts of acrylic acid, 0.09-0.1 part of azodiisobutyronitrile, 1.75-1.9 parts of polyvinylpyrrolidone, 2.5-3 parts of N,N-ethylidene bisricinoleamide, 17-19 parts of polypropylene, 1.5-2 parts of antioxidant 1010, 3-3.5 parts of thiodiglycol, 2-2.5 parts of lauric acid and 0.05-0.06 part of p-toluenesulfonic acid. The pigment can obviously reinforce the oxidation resistance of the products, can be uniformly dispersed in plastic materials and has high storage stability by preparing an antioxidant through reaction between thiodiglycol and lauric acid, mixing the antioxidant with the antioxidant 1010, then internally mixing the mixture with polypropylene and then adding the mixture to the products.