16 results about "Olefinic bond" patented technology

The invention discloses a preparation method of a tackifying flame-retardant organic silicon pressure-sensitive adhesive, which comprises the following steps: carrying out hydrosilylation reaction between a vinyl trimethoxy silane coupling agent and methyl hydrogen-containing silicon resin to synthesize an organic silicon tackifier MQ-ETMS, and carrying out wet modification on aluminum diethylphosphinate by using an olefinic bond-containing silane coupling agent to prepare a flame retardant K-ADP. After the prepared organic silicon tackifier and the flame retardant are introduced into an organic silicon pressure-sensitive adhesive system, the high-performance organic silicon pressure-sensitive adhesive tape is prepared through blending, coating, solvent volatilization and heating crosslinking. The synthesized tackifier is rich in methoxyl functional groups, the functional groups enhance the interaction between the organic silicon pressure-sensitive adhesive and the surface of an adhered material, and meanwhile, the olefinic bond-containing silane coupling agent is utilized to perform surface modification on the aluminum diethylphosphinate, so that the problem of dispersion of a traditional flame retardant added into the organic silicon pressure-sensitive adhesive is solved; therefore, the adhesion performance and the flame retardant property of the organic silicon pressure-sensitive adhesive are both improved.

The application discloses a reverse demulsifier composition and relates to the technical field of oil and gas field development. The reverse demulsifier composition comprises 1-4 parts of castor oil and 3-8 parts of cationic polyether in terms of weight parts. The cationic polyether is prepared from a mass ratio of 1:20-80:10-40 of a starter, ethylene oxide and propylene oxide. The starter is prepared by addition reaction of a first monomer and a second monomer. The first monomer is one of polyethylene polyamine or aliphatic diamine. The second monomer is quaternary ammonium salt containing one olefinic bond or epoxy quaternary ammonium salt. The molar ratio of the first monomer to the second monomer is 1:0.2m-0.7m, and m is the number of active hydrogen in the first monomer. The reverse demulsifier composition has good demulsification effect and fast demulsification speed.

The invention belongs to the technical field of photoresist, and particularly relates to an anhydride-based branched structure negative photoresist composition for an organic insulating film, which comprises the following components in parts by mass: 20-100 parts of a polymer containing an anhydride-based branched structure derivative; 2-60 parts of an unsaturated compound containing an olefinic bond; 0.006 to 20 parts of a free radical polymerization initiator; 0.004 to 15 parts of a surfactant; 0.002 to 10 parts of an adhesion promoter; and 50 to 2000 parts of a solvent. The polybasic carboxylic acid structure is introduced, the R soft segment is the polybasic carboxylic acid structure with double bonds and is subjected to free radical polymerization reaction with (methyl) acrylic acid and ester monomers thereof, the stable performance requirements of long-term storage, transportation and the like of a product are met, the polybasic carboxylic acid structure is applied to a photoresist material, the transparency of the material is further improved, and the transparency of the material is improved. The aperture ratio and resolution of the insulating film material are improved, and the dielectric constant of the organic insulating film is reduced.

The invention belongs to the technical field of photoresist, and particularly relates to a triazinyl negative photoresist composition for an organic insulating film, which comprises the following components in parts by mass: 30-100 parts of a polymer containing a triazine structure; 5-65 parts of an unsaturated compound containing an olefinic bond; 0.005 to 10 parts of a surface active agent; 0.005 to 10 parts of an adhesion promoter; 0.005 to 30 parts of a free radical polymerization initiator; and 100 to 2000 parts of a solvent. According to the invention, a polyfunctional group triazine derivative participates in a free radical addition reaction, a poly (methyl) acrylate polymer containing a triazine structure is synthesized, and by regulating and controlling the type and number of functional groups of monomers participating in the reaction and the alkyl chain length and introducing aryl or naphthenic base, the polyfunctional group-containing poly (methyl) acrylate polymer is obtained. The hydrophilic-hydrophobic property, the temperature resistance and the chemical resistance of the polymer can be accurately adjusted.

Provided is a lubricating grease and a refrigeration cycle device using the same as a lubricant, which is capable of suppressing a decrease in the function as a lubricant even when the lubricating grease is used in an apparatus provided in a refrigerant circuit in which a refrigerant having a chlorine atom and an olefin bond in a molecule flows. The composition of the lubricating grease used in an apparatus provided in a refrigerant circuit (50) in which a refrigerant having a chlorine atom and an olefin bond in a molecule flows contains fluorine. In a cooling device, the lubricating grease is used as a lubricant in at least one of a first radial contact bearing (162) and a second radial contact bearing (164) of a compressor (100), a driving portion of an inlet guide vane (124) of the compressor (100), and a driving portion of an expansion valve.

The application discloses a preparation method of chenodeoxycholic acid. The method uses 22E-3alpha-acyloxy-7-ketone-cholest-5,22-diene-24-carboxylic acid methyl ester as raw material, and one-pot three-site hydrogenation reduction of an olefinic bond and a carbonyl group is simultaneously carried out under the reduction condition of a metal catalyst to obtain a 5beta-hydrogen-7alpha-hydroxyl intermediate with high selectivity, and then chenodeoxycholic acid is obtained through hydrolysis. The method for preparing chenodeoxycholic acid directly constructs two chiral centers (5beta and 7alpha) through one-step hydrogenation. The reaction has the characteristics of simplicity, high efficiency, safe operation, high stereoselectivity and convenient product purification, can effectively prepare chenodeoxycholic acid, and is suitable for industrialization. The application has wide application prospect.

The invention relates to the technical field of solder resist dry film preparation, in particular to film-forming resin for a solder resist dry film and application of the film-forming resin. The film-forming resin is formed by graft copolymerization of a film-forming resin intermediate and an ethylenic bond type unsaturated epoxy monomer; the film-forming resin intermediate is prepared by copolymerizing the following raw materials in parts by weight: 10-20 parts of an acrylate monomer, 3-8 parts of a carboxyl-containing vinyl monomer, 8-12 parts of a styrene monomer, 0.1-0.3 part of an initiator and 40-50 parts of a solvent; the olefinic bond type unsaturated epoxy monomer comprises glycidyl methacrylate or a glycidyl methacrylate analogue, and the dosage of the olefinic bond type unsaturated epoxy monomer is 15-35% of the weight of the film-forming resin intermediate. By optimizing the selection and cooperation of film-forming resin monomers, the provided film-forming resin has obviously improved mechanical strength, chemical stability and heat resistance, solves the problems of low hardness, poor chemical resistance, high thermal expansion coefficient and the like of the existing photosensitive solder resist dry film, and better meets the actual application requirements.

According to the stable anti-aromatic fused ring isoporphyrin and the preparation method thereof, on one hand, the number of meso-carbon atoms is increased by introducing an olefinic bond to obtain meso-expanded pentaporphyrin, and on the other hand, the stability of a macrocycle is improved and the oxidation potential of the macrocycle is reduced through meso-electron-withdrawing pentafluorophenyl, so that the stable anti-aromatic fused ring isoporphyrin is obtained. The expanded pentaporphyrin can be subjected to multiple intramolecular oxidation parallel connection, so that stable anti-aromatic fused ring isoporphyrin is obtained; furthermore, through selective reduction and dipolar cycloaddition, the regulation and control on properties such as the structure, the anti-aromaticity and the spectrum of the anti-aromaticity condensed ring isoporphyrin are realized.

The invention discloses a novel photolytic cross-linking agent as well as a preparation method and application thereof, and belongs to the technical field of optical functional materials. The preparation method of the cross-linking agent comprises the following steps: adding ethyl 4-chloroacetoacetate into methanesulfonic acid dissolved with 4-bromoresorcinol, stirring, cooling a reaction solution, standing, precipitating, carrying out suction filtration to obtain a solid, and washing and drying to obtain a compound 1; dissolving the compound 1, K2CO3 and acrylic acid in DMF (Dimethyl Formamide), heating to react, cooling to room temperature, extracting, drying, performing rotary evaporation and purifying to obtain a compound 2; under the nitrogen atmosphere, triethylamine and acryloyl chloride are sequentially added into the ultra-dry THF solution in which the compound 2 is dissolved, the solvent is spin-dried and purified after the reaction is finished, and a cross-linking agent is obtained; the cross-linking agent can be subjected to a free radical polymerization reaction with an olefinic bond-containing monomer to form a three-dimensional cross-linked network structure to prepare a gel material, and the gel material can be subjected to light degradation under the excitation of light of 250-350 nm; the method can be applied to the fields of photoetching, micro-fluidic chip manufacturing, medicine controllable release and the like.

Fluids containing polyalpha-olefins (PAOs) may afford a number of benefits and be multi-functional in nature. Methods for using such multi-functional fluids may comprise: providing a multi-functional fluid comprising about 3 wt % to about 99 wt % of a polyalpha-olefin (PAO), based on a total weight of the multi-functional fluid; and contacting the multi-functional fluid with at least a portion of an electric drive unit. The PAO comprises about 10 mol % or less olefinic bonds and has a kinematic viscosity at 100° C. (KV100), determined pursuant to ASTM D445, of about 3.0 to about 4.5 cSt, and a Noack volatility (NV), determined pursuant to ASTM D5800, of about 15% or less.

The invention discloses a modified nano zinc oxide plugging agent and an oil-based drilling fluid, belonging to the field of oil and gas field drilling technology, wherein the modified nano zinc oxide plugging agent is a nano-scale material prepared by using nano zinc oxide of 20 40 nm levels, a silane coupling agent containing amino groups, a polycarboxyl compound, a primary alcohol compound containing an olefinic bond, an olefin compound containing a benzene ring, an initiator and a cross-linking agent as raw materials. The particle size distribution of the modified nano zinc oxide of the present invention is between 60 320 nm, which can effectively plug the nano-scale cracks in the mud shale formation, stabilize the well wall, and prevent the occurrence of well collapse accidents. And the oil-based drilling fluid used in the present invention has good performance in terms of rheology, stability and plugging under mud shale formation conditions.

Disclosed is a reactive organosilicon thixotropic agent, an organosilicon encapsulation adhesive containing the reactive organosilicon thixotropic agent, and an LED element encapsulated by using the organosilicon encapsulation adhesive. In the present disclosure, the reactive organosilicon thixotropic agent is prepared by a hydrosilylation reaction of cyclic hydrogen-containing polysiloxane or branched hydrogen-containing polysiloxane that contains phenyl with unsaturated polyether under the condition that the ratio of the total quantity of SiH bonds in the cyclic hydrogen-containing polysiloxane or the branched hydrogen-containing polysiloxane to the total quantity of olefinic bonds in the unsaturated polyether is greater than 1, can provides the organosilicon encapsulation adhesive with stable thixotropic property, high transparency, and excellent mechanical property and adhesion property at the same time, and thus an LED element having great encapsulation property is manufactured.

Fluids containing polyalpha-olefins (PAOs) may afford a number of benefits and be multi-functional in nature. Methods for using such multi-functional fluids may comprise: providing a multi-functional fluid comprising about 3 wt% to about 99 wt% of a polyalpha-olefin (PAO), based on a total weight of the multi-functional fluid; and contacting the multi-functional fluid with at least a portion of an electric drive unit. The PAO comprises about 10 mol % or less olefinic bonds and has a kinematic viscosity at 100°C (KV100), determined pursuant to ASTM D445, of about 3.0 to about 4.5 cSt, and a Noack volatility (NV), determined pursuant to ASTM D5800, of about 15% or less.

The invention discloses a microgel enhanced acrylate emulsion and a preparation method of the microgel enhanced acrylate emulsion, and relates to the technical field of high polymer materials. Comprising the following raw materials: 1-7 parts of a macromolecular RAFT emulsifier, 4-10 parts of a reactive emulsifier, 2-12.5 parts of an asymmetric divinyl monomer, 50-90 parts of a monofunctional group olefinic bond-containing monomer, 3-15 parts of a polyfunctional group olefinic bond-containing monomer and 0.5-4 parts of an initiator. The macromolecular RAFT emulsifying agent is a low molecular polymer with a polyacrylic acid-b-polystyrene-RAFT structure; the asymmetric divinyl monomer is selected as a microgel cross-linking agent, and two vinyl groups of the asymmetric divinyl monomer have differential reaction activity, so that staged cross-linking can be realized, premature gelation is avoided, and the conversion rate is remarkably improved; the RAFT reagent is used for controlling polymerization reaction, and the unique monomer migration mechanism of emulsion polymerization is combined, so that active controllable polymerization is realized, and uniform distribution of a cross-linked network is ensured.

Methods for transferring heat from an electric heat source may comprise: providing a heat transfer fluid comprising about 3 wt % to about 99.99 wt % of a polyalpha-olefin (PAO), based on a total weight of the heat transfer fluid; contacting the heat transfer fluid with at least a portion of an electric heat source; and removing heat from the electric heat source with the heat transfer fluid. The PAO comprises about 10 mol % or less olefinic bonds and is a C22-C32 trimer of one of more C4-C12 linear alpha-olefins having a kinematic viscosity at 100° C. (Kv100), determined pursuant to ASTM D445, of about 1.8 cSt to about 4.5 cSt.

The invention belongs to the technical field of biological medicines, and particularly relates to an organic selenium composition for inhibiting tumor cells and a preparation method thereof. The organic selenium composition is prepared from the following components in parts by weight: 7 to 12 parts of selenobenzonitrile-glycyrrhetinamide, 2 to 5 parts of qiangstilbene glycoside and 0.5 to 1 part of selenized carrageenan. According to the preparation method, carbonyl alpha, beta-unsaturated olefinic bonds in methylated glycyrrhetinic acid react with 4-mercaptobenzonitrile, a benzonitrile structure is introduced on the basis that the core active structure of methylated glycyrrhetinic acid is reserved so as to enhance the targeting property, and meanwhile, selenium compounds are introduced to carboxyl of methylated glycyrrhetinic acid, so that the targeting property of the methylated glycyrrhetinic acid is improved. Thus, selenobenzonitrile-glycyrrhetinamide is prepared. Selenobenzonitrile-glycyrrhetinamide is used in cooperation with Quangqi glycoside and selenized carrageenan, and the prepared organic selenium composition has an obvious proliferation inhibition effect on various tumor cells and does not have obvious toxicity on human normal hepatocytes L02.