20 results about "Dibasic ester" patented technology

A hard surface cleaning composition comprising: (a) 0.1 to 60 wt % of a surfactant system; (b) 0.1 to 40 wt % of a solvent, wherein the solvent is selected from the group consisting of a lower alkanol, a benzyl alcohol, a lower alkyl ether, a glycol, an aryl glycol ether, a lower alkyl glycol ether, a glycerol ketal, an ester, a hydrocarbon / ester blend, a dibasic ester, a linear alcohol ethoxylate, a branched alcohol, oxo alcohol ethoxylate, and combinations thereof; and (c) optionally 0.001 to 10 wt % of a lipase.

The application discloses an electronic skin-oriented conductive silver paste and a preparation method and application thereof, and relates to the technical field of flexible printed electronic materials.The raw materials of the electronic skin-oriented conductive silver paste include flaky silver powder, silver nanoparticles, thermoplastic polyurethane elastomer, acrylic elastomer, PEDOT:PSS microgel dispersion, (3-glycidylpropoxy)trimethoxysilane, polydiallyldimethylammonium chloride, hexanedial modified dopamine copolymer, (3-aminopropyl)triethoxysilane, methacryloyloxypropyltrimethoxysilane, cellulose acetate, modified polyurea thixotropic agent, hydrogenated castor oil, ethylene glycol ether acetate, dibasic acid ester, leveling agent and water.The electronic skin-oriented conductive silver paste has the advantages of good electrical performance, good mechanical-electrical stability, good anti-electromigration and sweat corrosion resistance, and can still maintain dendrite-free and low drift under long-term coupling of sweat and bias, and is suitable for electronic skin.

A ceramic scintillator array 1 according to an embodiment of the present invention is provided with a plurality of scintillator segments 2 and a reflective layer. The reflective layer contains a resin composition. The resin composition contains a transparent resin and an additive. Dibasic acid esters serve as the additive.

The invention belongs to the technical field of electronic paste, and particularly relates to silver-nickel paste for a radio frequency identification antenna and a preparation method of the silver-nickel paste. The silver-nickel paste comprises the following components in percentage by mass: 50-60% of conductive metal powder, 5-20% of polymer resin and a solvent, the conductive metal powder comprises first-stage powder, second-stage powder and third-stage powder, the particle size D50 of the first-stage powder, the particle size D50 of the second-stage powder and the particle size D50 of the third-stage powder are decreased step by step, the first-stage powder is nickel powder, and the second-stage powder and the third-stage powder are silver powder; the conductive metal powder comprises nickel powder and silver powder; the macromolecular resin comprises vinyl chloride-vinyl acetate resin and polyester resin; the solvent is dibasic acid ester. The silver-nickel paste capable of replacing pure silver conductive paste is firstly provided, on one hand, the material cost of the radio frequency identification antenna printing paste is reduced, and on the other hand, the particle size design and metal model selection are combined to optimize the conductive performance after nickel replacement.

The invention relates to a polyester material, a preparation method thereof and an antibacterial product. The polyester material comprises a polyester main chain and antibacterial peptide; the polyester main chain is prepared from the following raw materials: dibasic acid and / or dibasic ester and dihydric alcohol; the dibasic acid comprises terephthalic acid, and the dibasic ester comprises terephthalic acid ester; the antibacterial peptide is prepared through a ring-opening polymerization reaction of amino-acid ester-N-carboxy anhydride. According to the polyester material, the heat resistance and the optical performance are further improved while good antibacterial performance is achieved.

An EPDM composition that is a rubber composition in which ethylene-propylene-diene terpolymer rubber is compounded with carbon black, a plasticizer, and a crosslinking agent, wherein the plasticizer is a polyol ester, which is a reaction product of a neopentyl type polyol and a monocarboxylic acid, and the amount of the plasticizer in the composition is 5 to 22 wt. %. The EPDM composition has excellent effects that kneadability and processability are not impaired, and that in terms of hardness changes after a heat aging test, the resulting crosslinked product is equivalent to when the same amount of an α-olefin oligomer is compounded, and is significantly improved compared to when an aliphatic dibasic acid ester is compounded.

The application discloses an environmentally-friendly low-odor stretchable conductive silver paste and a preparation method and application thereof, and relates to the technical field of flexible printed electronic materials.The raw materials of the environmentally-friendly low-odor stretchable conductive silver paste include flaky silver powder, silver nanoparticles, a bio-based polyurethane, an acrylic elastomer, PEDOT:PSS microgel, a sulfobetaine-silane copolymer, polyquaternium-10, 1,2,4-triazole or a derivative thereof, cellulose ester, fumed silica, ethylene glycol ethyl ether acetate, dibasic acid ester, a leveling agent and water.The environmentally-friendly low-odor stretchable conductive silver paste has the advantages of low VOC emission, low odor, good skin compatibility and good chemical stability, and can still maintain dendrite-free and low drift under long-term coupling of sweat and bias voltage;the paste can be densified at a low resistance at 130 DEG C for 30 min, is friendly to printing and is suitable for roll-to-roll large-area manufacturing.

The invention discloses a modified montmorillonite-based lubricant and a preparation method thereof, and belongs to the technical field of lubricants, oleic acid and diethylenetriamine are cyclized and quaternized to prepare an oleic acid-based imidazoline quaternary ammonium salt corrosion inhibitor, the oleic acid-based imidazoline quaternary ammonium salt corrosion inhibitor is used for organic modification of nano montmorillonite, a silane coupling agent is further adopted for silanization treatment, and the modified montmorillonite-based lubricant is prepared. The preparation method comprises the following steps: preparing silane modified corrosion-inhibition montmorillonite, carrying out in-situ polymerization coating by taking a urea-formaldehyde prepolymer as a wall material to form montmorillonite modified corrosion-inhibition microcapsules, and carrying out copolymerization on acrylic acid, N, N-bis (2-hydroxyethyl) aminomethylene diethyl phosphonate and trifluoromethacrylate to obtain the modified polyacrylate dispersant with heat-resistant and dispersion-stable functions. The microcapsule, a dispersing agent, dibasic acid ester oil, PAO base oil and an antioxidant are compounded in proportion to form the modified montmorillonite-based lubricant.

The invention discloses conductive silver paste for electronic skin as well as a preparation method and application of the conductive silver paste, and relates to the technical field of flexible printing electronic materials. The conductive silver paste for the electronic skin comprises the following raw materials: flake silver powder, silver nanoparticles, a thermoplastic polyurethane elastomer, an acrylic elastomer, a PEDOT: PSS microgel dispersion, (3-glycidyl propoxy) trimethoxysilane, poly (diallyldimethylammonium chloride), an adipic dialdehyde modified dopamine copolymer, (3-aminopropyl) triethoxysilane, a crosslinking agent, a coupling agent and a solvent. The coating is prepared from methyl acryloyloxy propyl trimethoxy silane, cellulose acetate, a modified polyurea thixotropic agent, hydrogenated castor oil, ethylene glycol monoethyl ether acetate, dibasic acid ester, a flatting agent and water. The conductive silver paste for the electronic skin has the advantages of being good in electrical property, mechanical-electrical stability, electromigration resistance and sweat corrosion resistance, can still keep no dendrite and low drift under long-term coupling of sweat and bias voltage, and is suitable for the electronic skin.

The present application belongs to the technical field of polyester copolymerization modification, and relates to a preparation method of block polyester-polycarbonate. Dimethyl carbonate and dihydric alcohol are used as raw materials, and dihydric alcohol and dimethyl dicarboxylate or dicarboxylic acid are used as raw materials. Under the action of a catalyst, esterification and pre-polycondensation reactions are sequentially performed to obtain carbonate esterification products with methoxy end groups and dicarboxylic acid esterification products with hydroxyl end groups, respectively. The carbonate esterification products with methoxy end groups and the hydroxyl-terminated dicarboxylic acid esterification products are mixed and subjected to final polycondensation reaction under negative pressure to obtain block polyester-polycarbonate. The number average molecular weight of the carbonate esterification products with methoxy end groups is 430-4000 g / mol. The number average molecular weight of the carbonate segment in the block polyester-polycarbonate and the number average molecular weight of the carbonate esterification products with methoxy end groups differ by less than 5%. The preparation method is simple and easy to implement, and the obtained block polyester-polycarbonate has excellent thermal and mechanical properties.

The primer composition comprises a polyacrylate dissolved or dispersed in water. The polyacrylate comprises at least 20% by weight of methyl methacrylate units, at least 15% by weight of monomer units comprising at least one of secondary amines, tertiary amines, or tertiary amides, at least 15% by weight of acrylic monomer units comprising an alkyl group having at least four carbon atoms, and 2.5% to 10% by weight of acrylic monomer units comprising a carboxylic acid group. The primer composition comprises a polymer dispersed in water and a solvent, wherein water accounts for 50% by weight or more of the primer composition, and the solvent comprises at least one of propylene carbonate, polyol, polyol ether, polyol ether ester, or dibasic acid ester. The adhesive system comprises the primer composition and an adhesive tape. Furthermore, a method for producing the bonded article is also described.

The application discloses a kind of transparent environmental protection intrinsic flame-retardant epoxy resin material and preparation method and application thereof.The intrinsic flame-retardant epoxy resin material is prepared by high-temperature melting method according to certain proportion by isocyanuric acid triglycidyl ester and dicarboxylic acid, acid anhydride or diacid ester reaction.The obtained intrinsic flame-retardant epoxy resin material flame-retardant function is mainly given by isocyanurate ring, with it as the main structure of material, can make material have excellent thermal stability, mechanical property and halogen-free flame-retardant performance;Flexible fatty chain introduced by curing agent and ester group produced by reaction, so that the material has excellent toughness and environmental protection degradable performance;The application combines bulk melting reaction and casting forming process, and can prepare highly transparent and arbitrary shape, with intrinsic halogen-free flame-retardant function, environmental protection degradable high-performance thermosetting resin, which can be used as environmental protection flame-retardant organic glass in building, transportation, aviation, home, electronic and other industries, and has wide application prospect.

The invention discloses environment-friendly low-odor stretchable conductive silver paste and a preparation method and application thereof, and relates to the technical field of flexible printing electronic materials. The environment-friendly low-odor stretchable conductive silver paste is prepared from the following raw materials: flake silver powder, silver nanoparticles, bio-based polyurethane, an acrylic elastomer, PEDOT: PSS microgel, a sulfobetaine-silane copolymer, polyquaternium-10, 1, 2, 4-triazole or a derivative thereof, cellulose ester, fumed silica, ethylene glycol monoethyl ether acetate, dibasic acid ester, a flatting agent and water. The environment-friendly low-odor stretchable conductive silver paste disclosed by the invention has the advantages of low VOC emission, low odor, good skin compatibility and good chemical stability, and can still keep no dendrite and low drift under long-term coupling of sweat and bias voltage; low-resistance densification can be achieved at 130 DEG C for 30 min, printing is friendly, and the method is suitable for roll-to-roll large-area manufacturing.

The present invention provides a ceramic scintillator array that can suppress the decrease in optical output after prolonged X-ray irradiation. [Solution] The ceramic scintillator array 1 of the embodiment comprises a plurality of scintillator segments 2 and a reflective layer. The reflective layer contains a resin composition. The resin composition contains a transparent resin and an additive. The additive is a dibasic acid ester.

The invention belongs to the technical field of polymers, and relates to high-molecular-weight 3-hydroxybutyric acid copolyester as well as a preparation method and application thereof. The invention discloses a preparation method of high-molecular-weight 3-hydroxybutyric acid copolyester, which comprises the following steps: (1) mixing 3-hydroxybutyric acid / ester and cyclic anhydride in a molar ratio of 1: (1-1.5), and reacting at a first reaction temperature of 20-140 DEG C for 1-10 hours to obtain a bifunctional monomer; and (2) under the action of a catalyst, mixing the bifunctional monomer, aromatic dibasic acid / ester, aliphatic dicarboxylic acid / ester and dihydric alcohol, carrying out esterification reaction at a second reaction temperature of 150-180 DEG C for 1-12 hours, heating to a third reaction temperature of 185-260 DEG C, and carrying out condensation polymerization for 1-24 hours to obtain the high-molecular-weight 3-hydroxybutyric acid copolyester with the structure as shown in the formula 1, the number-average molecular weight of the 3-hydroxybutyric acid copolyester with high molecular weight is greater than 20 kg / mol. The application potential of the high-molecular-weight 3-hydroxybutyric acid bio-based copolyester in the high-value fields of biomedical materials, degradable packaging and the like is expanded.

The invention discloses a solid form of ascorbic acid carbon chain dibasic acid ester and application thereof. Specifically, the X-ray powder diffraction pattern of the ascorbic acid carbon chain dibasic acid ester in the solid form has the following characteristic peaks expressed by angle 2 theta: 7.2 + / -0.2 degrees, 14.1 + / -0.2 degrees, 18.5 + / -0.2 degrees, 18.7 + / -0.2 degrees, 19.8 + / -0.2 degrees, 22.4 + / -0.2 degrees, 23.9 + / -0.2 degrees and 25.4 + / -0.2 degrees.

A continuous polymerization method for nylon. Polymerization starting materials comprise, in parts by mass, 5-60 parts of polymerization monomer dibasic acid and / or dibasic acid ester, 3-50 parts of diamine, and 10-90 parts of reactive dispersion medium polyamide. Polymerization steps comprise: continuously adding the polymerization starting materials into a material mixing device in proportion, so that the raw materials are mixed and reacted in the material mixing device to form a continuously conveyed melt, and reacting the evenly dispersed melt in a subsequent polymerization device until nylon is polymerized to reach a required molecular weight. The method is an efficient and environment-friendly polymerization method for nylon.

The invention belongs to the technical field of polymers, and relates to a degradable lactic acid copolyester elastomer as well as a preparation method and application thereof. The invention discloses a preparation method of a degradable lactic acid copolyester elastomer, which comprises the following steps: mixing aromatic dibasic acid / ester, aliphatic / alicyclic dihydric alcohol, micromolecular polyhydric alcohol and lactate with carboxyl terminal according to a molar ratio of (0.1-2): 1: (0-0.02): (0.1-2), adding a catalyst, heating for 1-10 hours at a first reaction temperature of 150-190 DEG C, and reacting for 1-2 hours at a second reaction temperature of 150-190 DEG C to obtain the degradable lactic acid copolyester elastomer. And then heating to a second reaction temperature of 200-250 DEG C, vacuumizing to 10-200 Pa, and reacting for 1-12 hours to obtain the degradable lactic acid copolyester elastomer, the molar content of the succinic acid lactate ester in the degradable lactic acid copolyester elastomer is 30-70%, and the crosslinking degree is 0.3-0.9%. The degradable lactic acid copolyester elastomer is applied to the polylactic acid composite material, so that the mechanical property of a polylactic acid base material can be effectively improved.

This invention belongs to the field of base oil preparation technology and provides a bio-based polyol base oil and its preparation method. Firstly, through Lewis acid catalysis, epoxidized soybean oil is used to modify polypropylene glycol to obtain an epoxidized soybean oil-modified polyether component. Simultaneously, bio-based azelaic acid and branched alcohol undergo a high-temperature esterification reaction under a catalyst to obtain a diester component with excellent low-temperature performance. Furthermore, using citric acid as the core framework, it first reacts with oleyl alcohol to form an oil-soluble matrix, then grafts benzoyl groups onto the central hydroxyl sites, and finally introduces anti-wear metal passivation functional groups containing sulfur-nitrogen heterocycles into the side chains through a thiol-ene reaction. The above-mentioned epoxidized soybean oil-modified polyether, diester, and multifunctional additives are compounded with polyalphaolefin base oil, and after homogenization and blending, the target product is obtained. The prepared base oil combines the advantages of bio-based sources and high-performance synthetic oils, exhibiting good lubricity and environmental friendliness.

A phase stable, concentrated antimicrobial solution having a pH less than 0.6, comprising:a. an effective amount of at least one sparingly soluble antimicrobial agent;b. an effective amount of at least one antimicrobial surfactant selected from the group consisting of anionic surfactants and amphoteric surfactants; andc. an effective amount of at least one solvent selected from the group consisting of esteramides, diamides, branched dibasic esters, and alkyl pyrrolidones;wherein, the weight ratio of the at least one antimicrobial surfactant to the at least one solvent is from about 1:3 to about 3:1, and wherein the solution, when diluted with an aqueous diluent at a ratio of from about 1:64 to about 1:1024 has a pH of from about 1 to about 6, and passes the Germicidal Spray Testing AOAC 961.02 test method, at room temperature, and at a contact time of no greater than 10 minutes against S. aureus. Effective ready-to-use (RTU) solutions, kits for use in making the concentrated and RTU solutions, methods of antimicrobial reduction using the solutions, and methods of making the solutions are also disclosed.