13 results about "Ethyleneglycol bis" patented technology

The present application relates to the technical field of pesticide preparation, in particular to a microemulsion containing fluroxypyr-isooctyl and aminoclopidol and a preparation method thereof, which is composed of the following components in percentage by mass: fluroxypyr-isooctyl 1-15%, aminoclopidol 1-15%, composite emulsifier 10-22%, co-emulsifier 5-11%, composite solvent 15-28%, antifreezing agent 2-6%, stabilizer 0.5-2.5%, and deionized water, with the total being 100%. The composite emulsifier is composed of dioctyl sodium sulfosuccinate and triphenyl ethenyl phenol polyoxyethylene ether phosphate triethanolamine salt, the composite solvent is composed of N,N-dimethyl decanamide and ethylene glycol diacetate, the stabilizer is composed of epoxidized soybean oil and citric acid, the co-emulsifier is dipropylene glycol methyl ether, and the antifreezing agent is glycerol. The microemulsion containing fluroxypyr-isooctyl and aminoclopidol and the preparation method thereof effectively solve a plurality of technical problems in the compounding process of the two active ingredients and have significant technical advantages.

This invention relates to a polyester resin for 50 / 50 blended powder coatings. This polyester resin is obtained by reacting raw materials including glycerin black lead, ethylene glycol, diethylene glycol, terephthalic acid, 4,4'-biphenyl dicarboxylic acid, succinic acid, and pyromellitic dianhydride. The resulting product exhibits good impact resistance, a gloss level generally above 92%, and other properties such as adhesion that basically meet the application requirements of 50 / 50 blended powder coatings. Due to the comprehensive utilization of the effective components of glycerin black lead, it has the advantages of low cost and outstanding environmental performance.

Disclosed herein are various embodiments pertaining to continuous processes for making ethylene glycol diacetate, also known as 1,2-diacetoxyethane, by esterification of monoethylene glycol to 2-hydroxyethyl acetate and the esterification of 2-hydroxyethyl acetate to ethylene glycol diacetate. Various embodiments herein use reactive distillation in processes promising enhanced economic viability in the production of high-quality ethylene glycol diacetate.

To provide an oil-in-water emulsion cosmetic with high moisturizing effect and viscosity stability. [Solution] An oil-in-water emulsion cosmetic comprising (A) a hydrophilic nonionic surfactant, (B) a higher aliphatic alcohol having 12 or more carbon atoms, (C) a polyethylene glycol difatty acid ester with a polymerization number of 20 or less of polyoxyethylene glycol, (D) an oil, and (E) water.

The application belongs to the technical field of oil field chemical additives, and provides a fluid loss additive for oil well cement and a preparation method thereof.The fluid loss additive for oil well cement comprises raw materials, i.e., a high molecular polymer, a composite hydration agent, an additive, deionized water and potassium persulfate; the high molecular polymer is formed by graft polymerization of sulfonated polyether sulfone, acrylonitrile, hydroxyethyl methacrylate and sodium allyl sulfonate monomers; and the composite hydration agent is formed by compounding and cross-linking of TPEG-2400, silica ash, metakaolin and polyethylene glycol diacrylate.The preparation method comprises the following steps: mixing the above raw materials, and obtaining the fluid loss additive after constant temperature stirring reaction.The fluid loss additive for oil well cement can utilize the synergistic effect among raw materials, improve the temperature resistance and salt resistance of the fluid loss additive, the fluid loss performance and the cement stone strength, and has the advantages of simple preparation process, easily obtained raw materials, controllable cost, suitability for industrialized scale-up production, adaptability to cementing operation in deep well, ultra-deep well and high salinity environment, etc.

The application discloses a synthesis method of polyethylene terephthalate, which utilizes terephthalic acid and ethylene glycol diacetate as polymerization raw materials, and obtains polyethylene terephthalate through de-acetate exchange polymerization under the action of a catalyst. In the method, the non-expected condensation mode (such as forming a diethylene glycol fragment) does not appear to affect the polymer performance; and because EG is not used, the tolerance to oxygen is stronger during the reaction process, and the produced PET will be more resistant to oxidation and yellowing. On the other hand, the boiling point of EGDA is lower than that of EG, so that EGDA is easier to separate from the system in theory, and the evaporated EGDA can be directly used for the next polymerization without other impurities.

The application relates to the technical field of ceramic industry, and provides a debonding agent capable of improving the thixotropy of mud and a preparation method thereof. The debonding agent comprises the following raw materials in parts by weight: 5-12 parts of enzymatic hydrolysis lignin, 3-10 parts of amino acid, 3-10 parts of glyoxal, 6-15 parts of methylene phosphonate, 6-15 parts of polyoxyethylene ether, 5-10 parts of polyethylene glycol diacrylate, 5-10 parts of acrylic monomer, 1.5-5 parts of cyclotriphosphazene crosslinking agent, 1-5 parts of silicate and 0.5-3 parts of tannic acid; the amino acid modified lignin is obtained through crosslinking reaction of enzymatic hydrolysis lignin, amino acid and glyoxal; the enzymatic hydrolysis lignin, amino acid, glyoxal, polyethylene glycol diacrylate, acrylic monomer and cyclotriphosphazene crosslinking agent are polymerized to form a crosslinking network, and the tannic acid is doped in the crosslinking network structure. The debonding agent provided by the application is compounded by using a polymer crosslinking structure and various functional raw materials, has good fluidity and thixotropy, and has very excellent debonding effect.

Disclosed is a W / O / W emulsified composition exhibiting good stability. The W / O / W emulsified composition comprises an inner aqueous phase, an oil phase in which the aforementioned inner aqueous phase is dispersed, and an outer aqueous phase in which the aforementioned oil phase is dispersed, the aforementioned inner aqueous phase comprising an osmotic pressure adjusting agent, wherein the aforementioned osmotic pressure adjusting agent functions to generate an osmotic pressure between the aforementioned inner aqueous phase and the aforementioned outer aqueous phase, and comprises one or more selected from the group consisting of polyglycerin fatty acid esters having an average degree of polymerization of 2 to 9 of glycerin and polyethylene glycol dipolyhydroxystearate as a surfactant for emulsifying the aforementioned inner aqueous phase in the oil phase, and the aforementioned osmotic pressure adjusting agent comprises at least one selected from the group consisting of citric acid, citrate salts, and sulfate salts.

The application discloses a method for synthesizing ethylene glycol diacetate by using a solid superacid catalyst. 2‑ The application discloses a method for synthesizing ethylene glycol diacetate by using a solid superacid catalyst of SO4 2‑ / TiO2-SiO2 type. The catalyst is prepared by co-precipitation of a titanium source and a silicon source, impregnation with dilute sulfuric acid and calcination, and has high specific surface area and rich strong acid sites. The catalyst can be used to catalyze esterification of ethylene glycol and acetic anhydride (or acetic acid) at 140-150 DEG C to efficiently generate ethylene glycol diacetate, the yield of which can be more than 90%, and the by-product is very little. The catalyst can be easily separated from the reaction system and has good recycling performance. The application has the advantages of high catalytic activity, good selectivity, no corrosion, recyclable catalyst and the like, and can be used for industrial production of ethylene glycol diacetate.

Disclosed herein are various embodiments pertaining to continuous processes for making ethylene glycol diacetate, also known as 1,2-diacetoxyethane, by esterification of monoethylene glycol to 2-hydroxyethyl acetate and the esterification of 2-hydroxyethyl acetate to ethylene glycol diacetate. Various embodiments herein use reactive distilliation in processes promising enhanced economic viability in the production of high-quality ethylene glycol diacetate.

This invention discloses a modified maltase adjuvant and its preparation method. The preparation method includes: dissolving maltase in phosphate buffer, adding a bifunctional coupling agent (N-hydroxysuccinimide-polyethylene glycol-dibenzocyclooctylene) for activation; then covalently grafting the activated maltase with a hydrophilic modifier and a functional small molecule (1-carboxybutyl-3-methylimidazolium salt); finally, purifying by ultrafiltration to obtain the modified maltase adjuvant. This invention constructs a stable covalent structure on maltase containing both hydrophilic segments and functional ionic liquids through sequential functionalization modification mediated by a specific coupling agent. The resulting adjuvant possesses excellent enzyme stability enhancement and catalytic auxiliary functions, significantly improving the thermal stability, catalytic efficiency, and reusability of various industrial enzymes. It exhibits the characteristics of "multiple effects in one agent" and strong versatility, making it suitable for multiple fields such as biocatalysis, food processing, and bioenergy.

This invention relates to the field of interlayer technology in laminated glass, and particularly to a binary composite plasticized gradient structure PVB interlayer, its preparation method, and laminated glass. The interlayer has a three-layer gradient structure, consisting of a first surface layer, a middle sound-insulating layer, and a second surface layer from the outside in. Both the first and second surface layers contain a first PVB resin and a first composite plasticizer, which includes diethylene glycol dibenzoate and 3GO. The middle sound-insulating layer contains a second PVB resin and a second composite plasticizer, which includes a mixture of diethylene glycol dibenzoate and 3GH. This invention, through innovative material formulation and structural design, provides a PVB interlayer solution that balances high weather resistance, excellent sound insulation, strong adhesion, low plasticizer migration tendency, and additional heat insulation functions. It also includes a stable and efficient preparation method, effectively overcoming the limitations of existing technologies where performance cannot be synergistically improved.