251 results about "Olefinic bond" patented technology

The invention relates to a novel medical adhesive which can be subjected to crosslinking copolymerization and which has good biodegradability. A polymer substrate of the adhesive comprises both single alpha-cyanoacrylate and double alpha-diol cyanoacrylate monomer molecules. Olefinic bonds in single alpha-cyanoacrylate structure can be subjected to polymerization under a trace-amount anionic condition. The double alpha-diol cyanoacrylate in the polymer substrate can serve as a crosslinking agent, such that crosslinking copolymerization of the system can be carried out. Chain growth occurs with a three-dimensional multi-point polymerization manner. A gelling speed is fast, and linear polymerization degree of double-bond polymerization is low. A meshed main chain of the solid 3D-body high polymer obtained by polymerization has degradation sites. Degradation product path is clear, and the degradation product can be absorbed. The medical adhesive can be used in wound bonding, bleeding stopping at massive trauma, visceral and soft tissue wound closure, and the like. In addition, the medical adhesive has a potential purpose to be developed into a tissue engineering material.

The invention provides hetero-functional compound compounds useful in a variety of adhesive applications. More particularly, the invention provides compounds bearing at least one electron rich olefinic bond and at least one electron poor olefinic bond, wherein the two olefinic bonds are separated by a C3 to about C500 aliphatic, cycloaliphatic, or aromatic spacer.

The invention discloses a polyacrylamide composite flocculant and a preparation method thereof. The polyacrylamide composite flocculant is synthesized in situ by the following steps: carrying out inorganic high polymer flocculant surface treatment on acrylamide, an inorganic high polymer flocculant, an initiator, acryloyloxyethyldimethyl long-chain alkyl ammonium bromide and an olefinic-bond-containing silane coupling agent, preparing the polyacrylamide in-situ composite flocculant, and the like. The acrylamide molecule is introduced to the cationic flexible long branched chain structure, so that the physical entanglement network structure can better display the bridge mesh function. By compounding the inorganic high polymer flocculant with the cationic polyacrylamide, the reactive coupling agent is adopted to modify the inorganic high polymer flocculant surface, and the coupling agent molecule participates in the acrylamide polymerization reaction to graft the inorganic high polymer flocculant molecule onto the polyacrylamide molecule, thereby enhancing the interface action between the inorganic high polymer flocculant and polyacrylamide molecule and the adsorption, neutralization, sweep mesh actions on pollutants in sewage.

This invention is directed to a new low molecular weight branched alkenyl succinic acid derivative that may be prepared by reacting a low molecular weight polyisobutene (PIB) having from about 8 to about 32 carbon atoms, and wherein at least about 50% of the olefinic bonds of the polyisobutene comprises methylvinylidene isomer plus tri-substituted isomer, with an unsaturated acidic reagent and method of making same, resulting in alkenyl succinic acid derivative isomers; and a low molecular weight branched alkenyl succinimide and method of making same.

The invention relates to a besmirch resistant water-containing coating composition, which comprises the following components in percentage: (i) a water-containing copolymer emulsion, wherein the copolymer is prepared from a mixture comprising the following monomers in percentage by weight in form of the dry weight of the copolymer: a) 89 to 99.95 percent of an olefinic bond type unsaturated non-ionic monomer, and b) 0.05 to 5 percent of phosphorous olefinic bond type unsaturated monomers or salts thereof; (ii) a pigment, which renders the PVC range of the coating composition between 5 and 65 percent; (iii) a paraffin wax emulsion of which the dry weight is 0.5 to 20 percent of that of the copolymer (i); (iv) a sulphur-containing surfactant of which the weight is 0.01 to 3 percent of the dry weight of the copolymer (i); and (v) a coating auxiliary agent. The invention also relates to a method for obtaining a besmirch resistant surface as well as a base material with the surface coated with the water-containing coating composition.

The invention discloses an ethylene vinyl acetate (EVA) glue film for encapsulating a solar battery. The EVA glue film comprises the following components in part by mass: 100 parts of ethylene-vinyl acetate copolymer, 0.7 to 1.1 parts of crosslinking curing agent, 0.4 to 0.8 part of crosslinking aid, 0.4 to 0.8 part of coupling agent, 0.1 to 0.5 part of antioxidant and 0.1 to 0.5 part of fluorescence complex, wherein the mass percentage of the ethylene-vinyl acetate copolymer is 20 to 40 percent; the crosslinking curing agent is tert-butyl peroxide 2-ethyl hexyl carbonic ester; the crosslinking aid is triene propyl isocyanate trimer; and the coupling agent is gamma-(methyl propylene acyloxy)propyl trimethoxy silane. After the battery pack is heated and encapsulated, the olefinic bond of the fluorescence complex and the EVA perform copolymerization, so that the fluorescence complex is firmly fixed in the crosslinking cured EVA glue film through the chemical bond, loss of the fluorescence complex is effectively avoided, the service life of the battery pack is guaranteed, and ultraviolet light is effectively utilized.

The invention discloses modified silica sol, and a preparation method and application thereof. The preparation method for the modified silica sol comprises the following steps: preparing olefinic-bond-grafted silica sol; preparing sulfonic-group-grafted silica sol; and subjecting the olefinic-bond-grafted silica sol and the sulfonic-group-grafted silica sol to mixing, stirring and aging so as to obtain silica sol simultaneously grafted with an olefinic bond and a sulfonic group, wherein a mass ratio of the olefinic-bond-grafted silica sol to the sulfonic-group-grafted silica sol is 0.2-1: 1. The modified silica sol prepared by using the method in the invention has excellent hydrophilic property and good compatibility with an organic polymer monomer, and can be used as an important raw material of a super hydrophilic and antifogging coating.

The invention relates to a special material for polyvinyl chloride (PVC) protection railing of a highway and a preparation method thereof. The preparation method is characterized in that glass fiber is adopted to be compounded with substrate resin PVC, the surface of the glass fiber is processed with coupling agent, the glass fiber is chopped into segments of 2 to 4mm, the subsrate resin PVC is modified through a modifier, a coupling agent olefinic bond which is connected onto the glass fiber is grafted and cross-linked with the substrate resin PVC to be mixed into a composite material, and then the composite material is granulated to produce the special material for the protection railing of the highway.

The present invention provides one kind of antidrip agent for thermoplastic resin, its preparation process and thermoplastic resin composition containing the antidrip agent. The antidrip agent is particle of average size 0.075-1 micron and comprising one core part and one shell part in the weight ratio of 30 / 70-80 / 20. The core part contains fibrillation tetrafluoroethylene-base polymer, and the shell part is copolymer of vinyl monomer and alpha-, beta-olefinic bond unsaturated carboxylic acid. The antidrip agent has high dispersivity, and the thermoplastic resin composition containing the antidrip agent has no surface defect, good appearance and high transparency.

The invention relates to a functional segmented copolymer based on living polymerization. The functional segmented copolymer has a structural formula as shown in the specification, wherein a segment A is prepared by polymerizing at least two olefinic bond unsaturated monomer segments; A1 is a polar olefinic bond unsaturated monomer with an amino functional group, an acid functional group or methacrylic acid glycidyl ester; A2 is a copolymerization prompting monomer; a segment B is prepared by polymerizing at least one or more than one olefinic bond unsaturated monomers; x, y and z are the polymerization degrees; z ranges from 0 to 400; the number-average molecular weight of the segment A is 500-50000; the number-average molecular weight of the segment B is 1000-20000. By introducing the copolymerization prompting monomer A2, the defects in preparing the conventional segmented active copolymer are avoided, not only can the functional segmented copolymer prepared in an ordinary solvent, but also the compatibility of a dispersing agent and a substrate of the functional segmented copolymer is greatly improved, and the functional segmented copolymer is good in dispersion effect for carbon black, organic dye and the like, low in color paste velocity, good in paint film color showing, and particularly high in blackness of the carbon black.

The invention provides a pour point depression and viscosity reduction agent. The pour point depression and viscosity reduction agent is characterized in that the pour point depression and viscosity reduction agent is a copolymer formed by a first monomer and a second monomer, wherein the first monomer is R1-CH=CH-COOR2, R1 is H, alkyls of C1-6 or COOH, R2 is alkyls of C12-24, and the second monomer is an olefinic bond-containing monomer with surface activity.

The invention discloses a high-temperature-resistant modified nano silicon dioxide blocking agent and an oil-based drilling fluid, and belongs to the technical field of oil and gas field drilling. The high-temperature-resistant modified nano silicon dioxide blocking agent is synthesized by modifying silicon dioxide with an enamine compound, a diallyl compound, an olefinic bond-containing long-chain alkyl ester compound, an amino-containing silane coupling agent and a cross-linking agent divinyl benzene through a step-by-step synthesis method. The particle size of the blocking agent prepared from the high-temperature-resistant modified nano silicon dioxide is 78-300 nm, the blocking performance is remarkably improved compared with that of similar blocking agents, and the blocking agent is resistant to high temperature and can be applied to deep wells and ultra-deep wells. The blocking agent also has the advantages of easily available raw materials, low price and the like, and the provided synthesis method is stable, reliable, simple, rapid and suitable for industrial production.

The invention discloses a dacron fabric fluorine-free waterproof finishing method. According to the method, firstly, MPTS (3-mercaptopropyltriethoxysilane) is used for performing hydrosulphonyl modification treatment on the surface of a dacron fabric, so that the dacron fabric obtains hydrosulphonyl with higher activity; then, through chemical reaction, hydrosulphonyl silane (or alkyl sulfhydryl)and the vinyl POSS with the olefinic bond structures take an ultraviolet light polymerization reaction with the dacron fabric subjected to modification treatment, and are combined onto the dacron fabric molecules by a chemical bonding method; a treated product has a waterproof function. The operation is simple; the efficiency is high; under the fluorine-free condition of a finishing agent, the waterproof effect is obvious; the water washing-resistant firmness is high; the water-proof performance durability of the dacron fabric is improved.

The invention belongs to the field of chemical engineering and relates to water-based coating, in particular to water-based coating for interior and exterior walls of buildings. The water-based coating comprises emulsion copolymer polymerized by at least one type of olefinic bond type unsaturated anion monomer and at least one type of other olefinic unsaturated monomers, wherein the copolymer is prepared by at least one type of phosphate-ester-containing surfactant including at least one phosphate group or salt thereof and is optionally cross-linked. Preferably, the water-based coating for the interior and exterior walls of the buildings further comprises thickener which is an acrylic acid addition polymer with an amine or acid function. The water-based coating for the interior and exterior walls of the buildings is excellent in mechanical property, high in binding power and good in ductility, still has excellent scrubbable performance particularly when high non-transparency is obtained, is high in stability, long in quality guarantee period and high in glossiness and free of bubbles after coating curing, thereby being novel coating which is attractive, practical, safe and environment-friendly.

The invention relates to the technical field of ultraviolet (UV) optical radiation free radical polymerization new materials, in particular to an acyl phosphine oxygen compound containing a sulfydryl substituent group with a structural general formula (I) as follows. The acyl phosphine oxygen compound containing the sulfydryl substituent group serves as an unsaturated compound containing olefinic bonds system to carry out the functions of a UV free radical photopolymerization curing photoinitiator. The invention further relates to a UV free radical photopolymerization curing material system containing the compound. At least one of a R1 substituent group, a R2 substituent group and a R3 substituent group of the general formula (I) compound is necessary to contain at least one sulfydryl.

The invention provides a coloring light-sensitive resin composition, which has high line width stability relative to development and can form pattern with high resolution, as well as a method for forming patterns using ultraviolet ray laser exposure, and a method for producing an optical filter using the pattern-forming method, a color filter and a display device. The invention especially provides a coloring light-sensitive resin composition which is suitable for forming coloring pixel of color filter or the like, as well as a method for forming patterns using ultraviolet ray laser exposure. The coloring light-sensitive resin composition provided by the invention contains: (A) olefinic bond type unsaturated compound, (B) adhesive resin, (C) colorant, as well as (D) light polymerization initiator shown in the general formula (I). In the general formula (I), R and X respectively and independently represent a monovalent substituent, as well as Y respectively and independently represent adivalent organic group, and Ar represents an aromatic group. N is an integer from 0-5.

The invention relates to hybrid organic silicon resin with a framework structure containing Zr or containing Zr and Ti simultaneously and a preparation method of the organic silicon resin. The structure of the resin contains Si-O-Si, Si-O-Zr and Zr-O-Zr structural units, or is likely to contain Si-O-Ti, Ti-O-Ti and Ti-O-Zr structural units simultaneously. According to the preparation method of the resin, the hydrolytic condensation process of organic Zr or combined hydrolytic condensation of organic Zr and titanate is realized in an organic silicon resin solution with the low molecular weight, and the resin is prepared. The synthetic method is simple and easy to implement, and industrial production is facilitated. Zr is introduced, or Ti links are introduced simultaneously, so that the refraction index and the high-temperature resistance of the hybrid resin can be significantly improved. The organic silicon resin with the low molecular weight in raw materials is converted, and olefinic bonds or -Si-H active groups are easily introduced into the hybrid resin structure, so that the hybrid organic silicon resin can have the addition curing reaction.

The invention provides a magnetic iron oxide-immobilized ionic liquid solid acid material catalyst and a preparation method thereof. The preparation method comprises the steps: carrying out a reaction of an olefinic bond-containing imidazole, pyridine and tertiary amine compound with propane sultone or butane sultone, to obtain olefinic bond-containing ylide; then acidifying with an acid, to obtain sulfonyl functionalized ionic liquid monomers with anions as acid radicals; followed by, synthesizing magnetic iron oxide through coprecipitation, adding mercaptoalkyl trialkoxysilane, carrying out hydrolytic condensation, and thus forming a magnetic iron oxide core having the surface with sulfydryl; and finally, carrying out mixed copolymerization of the ionic liquid monomers with the magnetic iron oxide core having the surface sulfydryl, and thus forming the magnetic iron oxide-immobilized ionic liquid solid acid material catalyst. The catalyst material has the advantages of high thermal stability, stability to water, easy contact with acidic centers, high acid value, good catalytic effect, and simple and convenient recycling, and can be recycled by magnetic absorption.

The invention discloses a shale intercalation inhibitor prepared from a hyperbranched quaternary ammonium salt and belongs to the technical field of oil and gas field well drilling. The shale intercalation inhibitor prepared from the hyperbranched quaternary ammonium salt is prepared from the hyperbranched quaternary ammonium salt and water, wherein the mass ratio of the hyperbranched quaternary ammonium salt in the shale intercalation inhibitor is 0.5-4%; the hyperbranched quaternary ammonium salt is synthesized from a polyamine compound and an olefinic bond containing sulfone compound as rawmaterials and one of trimethyl vinyl ammonium, triethyl-vinyl ammonium and trimethyl-1-pentenyl ammonium as an end sealing reagent by the following steps: synthesizing end amino hyperbranched polyamine, and modifying the end amino hyperbranched polyamine. The shale intercalation inhibitor prepared from the hyperbranched quaternary ammonium salt, disclosed by the invention, is safe and nontoxic, and is easily combined with a clay layer with negative electricity, the inhibition performance of the inhibitor is remarkably improved when being compared with that of a similar product, the raw materials are easy to obtain and low in price, and the synthesis method is simple, stable and reliable and applicable to industrial production.

The invention aims at overcoming everolimus crystallization difficulties caused by unstable structures such as olefinic bond and ester bond in the everolimus structure, and provides an everolimus crystallization purification method. According to the invention, a synthesized everolimus raw material is treated through normal-phase column chromatography, such that an everolimus crude product is obtained; the everolimus crude product is dissolved by using a water-containing organic solvent under low temperature, and sufficient stirring is carried out; an alkane organic is added to the everolimus solution, and stirring is continued; when a small amount of crystals appear, crystallization is changed into ultrasonic crystallization; and filtering is carried out, such that the everolimus finished product is obtained. With the method provided by the invention, everolimus crystal conversion to isomer is blocked, and the conversion from isomer to everolimus crystal is realized. Also, significant effect is provided on removing or reducing other impurities. The method also has the advantages of good crystallization effect, high yield, low cost, and low requirement on equipment.

The invention relates to a synthesis method of acrylic ester copolymer with ultra-high molecular weight (more than 6 million). The technical problem to be solved by the invention is to provide a method with multistage reaction and higher efficiency. The method comprises the following steps: (1) preparation of a seed emulsion: adding a portion weight of water and two or more unsaturated monomers with olefinic bonds, wherein the weight ratio of water to the monomers is 1:0.6 to 1; adding an emulsifying agent and a pH buffer, and adding a portion weight of or the total weight of one or two oxidants and one or two reducers to carry out reaction completely, wherein the weight ratio of the oxidant to the reducer is 1:0.7 to 1.5; and (2) multistage polymerization reaction: adding unsaturated monomers with olefinic bonds in balancing amount in multiple stages after rising the temperature, keeping the temperature at 45 to 65 DEG C, adding the balancing amount of water in multiple stages, rising the temperature to 80 to 85 DEG C, and adding the balancing amount of the oxidant and the reducer.

The invention discloses a manufacturing method for a multiplayer superposed film, comprising the following steps: (a) providing a fluorine-containing polymer film; (b) providing a drawn polyester film; (c) providing an ethene polymer; and (d) at the temperature of 270 DEG C or above, adopting an extrusion coating method to form the multiplayer superposed film containing the fluorine-containing polymer, an ethene copolymer and the drawn polyester, wherein the ethene copolymer is selected from one or a mixture of an ethene / (methyl) acrylic copolymer, an ethene / (methyl) acrylic C1-6 carbalkoxy copolymer, and an ethene / olefinic bond unsaturated carboxylic acid [except for (methyl) acrylic acid] at any ratio; and the content of ethene in the ethene copolymer is 60-90wt%, 60-85wt% preferable, and 70-80wt% more preferable. The invention also discloses a multilayer superposed film manufactured by the method in the invention and a solar battery panel provided with the multilayer superposed film.

The invention relates to a radical polymerizable polyurethane composition. The polyurethane composition comprises polyurethane containing active olefinic bond and a reactive diluent. The polyurethane containing active olefinic bond is prepared from a component comprising (methyl) acrylate. The polyurethane composition has good operable time, relatively high heat distortion temperature and relatively low exothermic peak.

The invention discloses a liquid crystal compound comprising a thieno[3,2-b] thiophene ring and a composition thereof. The structural general formula of the liquid crystal compound is as shown in a formula (1) in the description, wherein R represents alkyl, alkoxyl or alkenyl, the carbon number of which is 1-9; Z represents any one of a single bond, an olefinic bond, an acetylenic bond, an ester bond and a difluoromethyl ether bond; and (F)x represents fluorine atom substitution in any position on a benzene ring, x represents the substituting number of f fluorine atoms and the value of x is 0-4. The compound disclosed by the invention has relatively high birefringence and can be applied to the field of liquid crystal light modulators.

The invention provides a dry film photoresist for aqueous solution development. The components thereof include a macromolecule adhesive, a free radical photoinitiator, monomers capable of having addition polymerization, a plasticizer and a thermal polymerization inhibitor. The dry film photoresist is characterized in that the macromolecule adhesive is an adhesive containing a carboxylic group and capable of forming a film, and is formed by polymerizing a mixture including components as follows (a) a monomer having a molecular formula of H2C=CRCOO[(CnH2n)X(CpH2p)]R', wherein R refers to hydrogen or methyl, R' refers to saturated or unsaturated C5-C12 crosslink alkyl which also can be replaced by at least one C1-C4 alkyl or hydrogen, x refers to an oxygen or sulfur atom, n ranges from 2 to 4, p ranges from 0 to 4, and m ranges from 0 to 2; and (b) at least one C3-C15, alpha, beta-unsaturated monomer containing a carboxyl group and 3-15 carbon atoms. The plasticizer contains carboxy polyurethane, the molecular weight ranges from 10,000 to 100,000, a free carboxyl group is introduced onto a main chain, and at least one olefinic bond unsaturated terminal group is provided.

A medical adhesive with good biodegradable performance capable of undergoing crosslinking copolymerization, comprising a mono-alpha-cyanoacrylate and a bis-alpha-cyanoacrylic acid diol ester monomer molecule. The olefinic bonds in the mono-alpha-cyanoacrylate structure are polymerized in the presence of infinitesimal anions to form a solid 3D high polymer; the 3D high polymer is provided with degradation sites on the web-like backbone chain, with clear degradation path and absorbable degradation products. The medical adhesive can be used for wound adhesive, large area wound hemostasia, and visceral and soft tissue wound closure.

The invention discloses a low-viscosity low-threshold negative liquid crystal composition which comprises 1-50% of at least one compound shown as general formula I in percentage by mass, wherein R1 and R2 are one of C2-5 alkyl chain, C2-5 alkoxy and C2-5 alkenyl chain of which an olefinic bond is not directly connected with an oxygen atom or benzene ring. The liquid crystal composition has large and negative dielectric constant, low threshold voltage and viscosity, wide nematic phase temperature range, favorable compatibility, favorable ultraviolet resistance and high temperature resistance, and is applicable to VA (vertical alignment) mode liquid crystal displays having requirements for high response speed and low power consumption.

The invention discloses a preparation method of a porous covalent organic framework and application of the porous covalent organic framework in uranyl ion capture, belonging to the technical field of adsorption materials. The preparation method comprises the following step: carrying out an aldol condensation reaction on 2,5-dihydroxy-1,4-phthalaldehyde (DHBD) and 2,4,6-trimethyl-1,3,5-triazine (TMT) to prepare an olefinic bond porous covalent organic framework (DHBD-TMT). The DHBD-TMT prepared by the method disclosed by the invention has a large number of hydroxyl functional groups and a highly planar pi-conjugated structure, and can simultaneously realize multiple functions of selective adsorption, chemical reduction, photocatalytic reduction of uranium and the like, so the adsorption capacity of uranium is remarkably improved. Inductively coupled plasma mass spectrometry results show that DHBD-TMT has excellent adsorption performance on uranyl ions, and has the advantages of high adsorption capacity, good selectivity, excellent optical activity, high stability, good hydrophilicity and the like. Besides, the DHBD-TMT can reduce soluble uranium (VI) into insoluble uranium (IV) through chemical reduction and photocatalytic reduction under visible light irradiation, so uranium fixation is realized; and the DHBD-TMT is an efficient adsorbent for extracting uranyl ions.

A shale intercalation inhibitor prepared from branched tertiary amine type polyamine with ultralow molecular weight is provided. The inhibitor is prepared by mixing the branched tertiary amine type polyamine with ultralow molecular weight and water according to a ratio. The branched tertiary amine type polyamine is prepared from a polyamine compound and a tertiary amine compound containing an olefinic bond through a substep synthesis method or a one-pot synthesis method, wherein the polyamine compound is one of alkyl diamine, polyethylene polyamine and polyamine with a low molecular weight. The branched tertiary amine type polyamine is nontoxic and harmless, a synthetic method thereof is simple and high in yield, raw materials are simple and easily available, and the branched tertiary amine type polyamine is suitable for large-scale industrial production. The inhibitor prepared from the branched tertiary amine type polyamine has obviously improved inhibiting effects than products of the same type, can effectively reduce the probability of instable well walls due to shale hydration dispersion, and can completely meet drilling demands for various complex well conditions.