13504 results about "Accelerant" patented technology

The invention discloses an epoxy resin composition, a metal-based copper-clad plate and a manufacturing method thereof. The epoxy resin composition comprises the following components by mass: 90-110 parts of epoxy resin, 10-50 parts of thermoplastic resin, 1-100 parts of a curing agent, 0.05-5 parts of a curing accelerant, 1-10 parts of an additive, 20-500 parts of heat conduction filler and 0-30 parts of an organic solvent. The metal-based copper-clad plate has the characteristic that 1, the heat conductivity is high; 2, the insulation property is high as the puncture-withstand voltage is higher than 6KV; 3, the anti-bending property is high, so that the metal-based copper-clad plate can be used for manufacturing a three-dimensional aluminum substrate; 4, the thickness of the insulation layer is uniform, the coating thickness tolerance can be controlled at + / - 2 microns, and the press-fit thickness tolerance can be controlled at + / - 5 microns, so that the performance of a product can be guaranteed; 5, the production efficiency is high; 6, the cost is low and is about 1 / 4-1 / 3 of the cost of an imported product.

The invention discloses an organic cultivation medium and an application method thereof. The organic cultivation medium is formed by fermenting a mixture comprising organic wastes (comprising straws, animal manures and organic garbage), sludge soil (urban sludge and substrate sludge of rivers and lakes) and composite soil microorganism preparations. The organic cultivation medium can be applied to plant and crop planting, and can be mixed with microelements, water-retaining agents and root-growth accelerants according to proportions in accordance with the nutrition requirement characteristics of plants and crops to form organic soil with common soil, and then the organic soil can be arranged in a manual anti-leakage cultivation slot or a specific container cultivation system to cultivate crops, vegetables and fruits, flowers or Chinese herbal medicine plants, etc.

The present invention relates to catalyst composition for oligomerizing ethylene and its application. The catalyst composition includes complex of acetylacetone chromium, tetrahydrofuran chromium chloride and / or chromium isooctanate; ligand containing P and N; activator of methyl aluminoxane, ethyl aluminoxane, propyl aluminoxane and / or butyl aluminoxane; and promoter of X1R6X2, where, each of X1 and X2 is F, Cl, Br, I or alkoxyl, and R6 is alkyl or aryl group; with the molar ratio of the complex, the ligand, the activator and the promoter being 1 to 0.5-10 to 50-3000 to 0.5-10. The catalyst composition is used in oligomerizing reaction of ethylene to prepare 1-octene, and has high catalytic activity and high 1-octene selectivity.

The present invention provides a binder composition comprising a low molecular weight polycarboxylic acid, such as maleic anhydride, and a low molecular weight poly alcohol, such as polyvinyl alcohol, that exhibits improved cure performance with reduced emissions without sacrificing the performance of the final product or complication the manufacturing process. The binder composition may also incorporate a cure catalyst or accelerant such as sodium hypophosphite.

A rubber mixture which exhibits reliable processability contains (A) a rubber or mixture of rubbers, (B) a filler, (C) at least one organosilane, (D) a thiuram accelerator, and (E) a nitrogen-containing co-activator. A weight ratio of thiuram accelerator (D) to nitrogen-containing co-activator (E) is equal to or greater than 1.

The invention belongs to the technical field of rubber, and particularly relates to polyethylene rubber and a processing method thereof. The polyethylene rubber comprises following raw materials by weight: 100 parts of hyper branched polyethylene, 50-80 parts of carbon black, 2-5 parts of a peroxide crosslinking agent, 0-6 parts of zinc oxide, 0-5 parts of a lubricant, 0.3-0.5 part of an accelerant, and 0-0.2 part of sulfur. Beneficial effects of the polyethylene rubber and the processing method thereof are that: the hyper branched polyethylene (HBPE) is sulfurized by utilization of a peroxide sulfurization system, has good mechanical performances through stress-strain performance tests, and has a characteristic of high elasticity of rubber. The processing method of the polyethylene rubber is totally different from preparation methods of chlorinated polyethylene rubber and chlorosulfonated polyethylene rubber at present. The polyethylene rubber and the processing method thereof break the limit that polyethylene can be only used for making plastic products, expand the application scope of the polyethylene, and largely increase the additional value of polyethylene homopolymers.

An organic-inorganic hybrid surface adhesion promoter having the general formula, A-B, wherein A is hydrolyzed and polycondensed from a trioxysilane R-Si(OR')3 or its mixture with one or two more silanes, where R' is methyl, ethyl or propyl, and where R is an organic group of methacrylate, epoxy, amine, isolyante, hydroxide or non-halogens or halogens containing alkyl, alkenyl, aryl, alkylary or arylalky, and wherein B is hydrolyzed and polycondensed from an alkoxy silane, chloride silane, or alkoxy or chloride metal compound, whereby B reacts with a substrate to form a uniting group which is selected from the group consisting of Si-O-Si, M-O-M, M-O-S and Si-O-M, M being a metal atom.

A catalyst for the selective oxidation of hydrogen has been developed. It comprises an inert core such as cordierite and an outer layer comprising a lithium aluminate support. The support has dispersed thereon a platinum group metal and a promoter metal, e.g. platinum and tin respectively. This catalyst is particularly effective in the selective oxidation of hydrogen in a dehydrogenation process.

The present invention relates to compositions and methods of treating a disease, such as diabetes, by implanting encapsulated biological material into a patient in need of treatment. This invention provides for the placement of biocompatible coating materials around biological materials using photopolymerization while maintaining the pre-encapsulation status of the biological materials. Several methods are presented to accomplish coating several different types of biological materials. The coatings can be placed directly onto the surface of the biological materials or onto the surface of other coating materials that hold the biological materials. The components of the polymerization reactions that produce the coatings can include natural and synthetic polymers, macromers, accelerants, cocatalysts, photoinitiators, and radiation. This invention also provides methods of utilizing these encapsulated biological materials to treat different human and animal diseases or disorders by implanting them into several areas in the body including the subcutaneous site. The coating materials can be manipulated to provide different degrees of biocompatibility, protein diffusivity characteristics, strength, and biodegradability to optimize the delivery of biological materials from the encapsulated implant to the host recipient while protecting the encapsulated biological materials from destruction by the host inflammatory and immune protective mechanisms without requiring long-term anti-inflammatory or anti-immune treatment of the host.

The invention discloses a preparation method and an application of an anti-pollution hydrophilic separating membrane. The preparation method is characterized in that a pyrocatechol derivative is used as an accelerant and a curing agent between a separating membrane material and a hydrophilic material, when blending casting film liquid of the separating membrane is prepared, the pyrocatechol derivative is added to blending liquid of the separating membrane material and the hydrophilic material, and the pyrocatechol derivative is subjected to polymerization cross-linking in a phase conversion process of the membrane preparation, so that the effect of fixing the hydrophilic material is achieved. The preparation method of the anti-pollution hydrophilic separating membrane has strong universality and is suitable for the blending of multiple hydrophilic materials and multiple membrane materials. The preparation method is simple, easy to operate, mild in conditions, economic, high-efficiency, environmentally-friendly, easy for industrialization and suitable for the preparation of multi-functional hydrophilic micro-filtration membranes, ultra-filtration membranes, nano-filtration membranes, reverse-osmosis membranes, positive-osmosis membranes, pressure-delay osmosis membranes, pervaporation membranes and the like which are used for liquid and gas separation and membrane reactors.

The invention provides an oxidized grapheme / carbon black rubber nanocomposite and preparation method thereof, which belongs to the field of rubber nanocomposite technology. The nanocomposite comprises the following basic compositions by mass: 100 parts of diene series rubber matrix, 0.5-5 parts of oxidized grapheme, 30-70 parts of hard carbon black of average particle size 11-30nm, 1-10 parts of plasticizer, 6-10 parts of activator, 0.5-4 parts of anti-aging agent, 1-4 parts of sulfuration promoter and 1-6 parts of insoluble sulphur; oxidized grapheme modifier. The oxidized grapheme powder is dispersed in deionized water for ultrasound, and a natural rubber emulsion is added, and masterbatch after flocculation, washing and drying is mixed uniformly with other additives, after sulfuration, the product is obtained. The oxidized grapheme / carbon black rubber nanocomposite has the advantages of excellent processing performance and obviously reduced dynamic themogenesis, thereby improving the usage life of tyre.

A formulation, method and system for the topical, transdermal or transmucosal administration of a therapeutically effective active agent. Particularly, the invention provides a formulation, system and method for enhancing the permeation or penetration of active agents across the dermal or mucosal surfaces of a mammalian subject. The formulation includes a plant extract of the genus Curcuma of the family Zingiberaceae, a germacrone, or a natural or synthetic constituent thereof, which has been found to increase penetration of the active agent across the dermal or mucosal surface. If desired, a secondary permeation enhancer of a polyalcohol, a monoalkyl ether of diethylene glycol, a tetraglycol, or a mixture thereof can be used for certain active agents for optimal permeation enhancement.

The invention generally provides gypsum-containing slurries including stucco, a hydroxyethylated starch, naphthalenesulfonate dispersant, and sodium trimetaphosphate. The naphthalenesulfonate dispersant is present in an amount of about 0.1%-3.0% by weight based on the weight of dry stucco. The hydroxyethylated starch is present in an amount of from about 0.5% by weight to about 10% by weight based on the weight of dry stucco in the formulation. The sodium trimetaphosphate is present in an amount of about 0.1%-0.4% by weight based on the weight of dry stucco. Other slurry additives can include accelerators, binders, paper fiber, glass fiber, and other known ingredients. The invention also comprises the gypsum-containing products made with such slurries, for example, lightweight gypsum wallboard, and a method of making lightweight gypsum wallboard.

The invention relates to a rubber composite, comprising nitrile rubber, polyvinyl chloride, carbon soot, activator, vulcanizator, age inhibitor, antiscorcher, accelerant and plasticizer, wherein, the plasticizer is ethylhexyl sebacate and adipate. The rubber composite of the invention obviously improves the anti-low temperature performance of the rubber composite while ensuring the anti-oil performance, anti-ozone performance, tensile strength and elongation at break.

Novel sorbent systems for the desulfurization of cracked-gasoline and diesel fuels are provided which are comprised of a bimetallic promotor on a particulate support such as that formed of zinc oxide and an inorganic or organic carrier. Such bimetallic promotors are formed of at least two metals of the group consisting of nickel, cobalt, iron, manganese, copper, zinc, molybdenum, tungsten, silver, tin, antimony and vanadium with the valence of same being reduced, preferably to zero. Processes for the production of such sorbents are provided wherein the sorbent is prepared from impregnated particulate supports or admixed to the support composite prior to particulation, drying, and calcination. Further disclosed is the use of such novel sorbents in the desulfurization of cracked-gasoline and diesel fuels whereby there is achieved not only removal of sulfur but also an increase in the olefin retention in the desulfurized product. Such sorbents can also be utilized for the treatment of other sulfur-containing streams such as diesel fuels.

The invention discloses a refined organic fertilizer and preparing method of sludge, which comprises the following steps: compounding piled raw materials; piling; turning the pile; ripening; drying in the hot cavity; sieving to obtain the product. The refined organic fertilizer contains composite sludge, organic amendment, inorganic amendment, matured accelerant, microbe grafting agent and adsorbant, which are blended completely according to certain proportion, wherein these materials are fermented for the second time, which are prepared into refined organic fertilizer.

The invention relates to compound epoxy flooring coating adopting the mixture of epoxide resin and modified resin as a base material and further comprising organic solvent, dispersant, wetting agent, antifoaming agent, flatting agent, scratch resistance agent, pigment and stuffing as well as reactive diluent selected according to requirements. When in use, the coating is mixed and solidified withthe components of firming agent, accelerant, etc. By regulating the content of the components, the compound epoxy flooring coating of the invention can be used for manufacturing a solvent or solvent-free autolevelling epoxy floor. The compound epoxy flooring coating of the invention has favorable over-all properties, and not only has the characteristics of high mechanical strength, favorable anti-corrosion property, high adhesive force and good wear resistance property of the epoxide resin but also has the characteristics of good weather resistance, high decorative property and hardness and shock resistance of the modified resin; and the preparation method thereof is simple and practicable, is low-cost, and is suitable for mass preparation.

The invention relates to a preparation method of recycled polyester chip microfilaments and a usage thereof, belonging to the field of plastic modification and category of composite material / alloy promoter. The polyester chip microfilament is an ideal promoter which has excellent performance, environment-friendliness, high added value, wide application range and broad market prospect and can change the mechanical property of the composite material / alloy. Recycled blow molding polyester (RPET / RPBT) is taken as main raw material, and the following formula and process are adopted for preparing the microfilament according to parts by weight: 100 parts of recycled polyester (RPET / RPBT), 5-30 parts of wire-drawing high-density polyethylene (HDPE) / polypropylene (PP) / linear low-density polyethylene (LLDPE), 0.1-4 parts of crosslinking agent / chain extender / anchoring agent, 0.1-0.8 part of antioxidant, 0.5-6 parts of nucleating agent, and 1-5 parts of nucleate accelerant, and other processing aids (such as lubricant and plasticizer) / functional aids (such as fire retardant and ultraviolet absorber) can be additionally and appropriately added. The microfilament is prepared through extrusion, cooling, drawing and granulating by the reaction under 90-260 DEG C under the action of mechanical shear. The recycled polyester (RPET / RPBT) microfilament prepared in the invention can endow the composite material / alloy with excellent mechanical property.

A reactor system for the epoxidation of ethylene, which reactor system comprises an elongated tube having an internal tube diameter of more than 40 mm, wherein contained is a catalyst bed of catalyst particles comprising silver and a promoter component deposited on a carrier, which promoter component comprises an element selected from rhenium, tungsten, molybdenum and chromium; a process for the epoxidation of ethylene comprising reacting ethylene with oxygen in the presence of the catalyst bed contained in the reactor system; and a method of preparing ethylene glycol, an ethylene glycol ether or an ethanol amine comprising obtaining ethylene oxide by the process for the epoxidation of ethylene, and converting the ethylene oxide into ethylene glycol, the ethylene glycol ether, or the ethanol amine. Preferably, the internal tube diameter is at least 45 mm.

The present invention is directed to a hydroprocessing catalyst containing at least one catalyst support, one or more metals, optionally one or more molecular sieves, optionally one or more promoters, wherein deposition of at least one of the metals is achieved in the presence of a modifying agent.

A method of strengthening a precipitated unsupported iron catalyst by: preparing a precipitated unsupported iron catalyst containing copper and potassium; adding a solution comprising a structural promoter to the previously prepared catalyst; drying the mixture; and calcining the dried catalyst.A method for preparing an iron catalyst, the method comprising: precipitating a catalyst precursor comprising iron phases selected from hydroxides, oxides, and carbonates; adding a promoter to the catalyst precursor to yield a promoted precursor; drying the promoted precursor to yield dried catalyst; and calcining the dried catalyst, wherein the catalyst further comprises copper and potassium.A method of preparing a strengthened precipitated iron catalyst comprising: co-precipitating iron, copper, magnesium, and aluminum; washing the precipitate; alkalizing the precipitate; and drying the precipitate to yield a dried catalyst precursor. The dried catalyst precursor may be calcined and treated with a gas comprising carbon monoxide.

The invention discloses a rape oil preparing biological radical polyatomic alcohol, which comprises the following steps: carrying on alcoholysis reaction with rape oil alcohol and accelerant; generating mixed unsaturated fatty acid monoesters; adding in epoxidation agent to proceed epoxidation reaction; getting mixed epoxy aliphatic acid monoesters-biological radical polyatomic alcohol. The invention has high reaction active, which is convenience to prepare high-functionality product.

The invention relates to a hydrolysis-resistant double-component polyurethane adhesive for structure adhesion. The hydrolysis-resistant double-component polyurethane adhesive for structure adhesion consists of a component A and a component B, wherein the component A comprises the following components in part by weight: 30 to 70 parts of polyisocyanate resin, 5 to 20 parts of plasticizing agent, 0.25 to 5 parts of thixotropic agent, 10 to 50 parts of incremental filler and 0.25 to 1 part of water-removing agent; and the component B comprises the following components in part by weight: 5 to 30 parts of polyester polyol, 5 to 30 parts of vegetable oil polyol, 5 to 30 parts of polyether polyol, 3 to 15 parts of water-absorbing filler, 1 to 10 parts of thixotropic agent, 3 to 15 parts of incremental filler, 0.1 to 10 parts of pigment, 0.1 to 5 parts of adhesion force accelerator, 0.1 to 2 parts of chain extender and 0.01 to 0.2 part of catalyst. An adhesion system improves adhesion property, solves the problem that a thermosetting composite material is subjected to surface roughening treatment before adhesion and improves the using efficiency. Aiming at the problem of poor hydrolysis resistance of a polyester type polyurethane adhesive system, the hydrolysis resistance is improved through molecule design of polyurethane soft and hard sections.

The invention relates to the use of Rifampin and its related compound as a method of producing long-lasting, effective skin tanning for human and animal. The invention relates to methods of accelerating and facilitating the tanning of the skin using Rifampin along with use of the other tanning facilitators and accelerants with or without UVR.

The invention relates to a sand-consolidating and water-blocking profile modifying agent for oil sludge sand. The profile modifying agent is prepared by mixing the following raw materials: oil sludge sand, 10 to 90 portions of consolidation agent or adding modifier, a consolidation accelerant or a consolidation retardant; the oil sludge sand is subjected to ball milling through a ball mill; part of large crude oil is separated off so as to reach the requirement of granularity of the profile control agent; therefore, the oil sludge sand with granularity of less than 200 meshes is less than 70 percent of the total mass of the oil sludge sand; and the consolidation agent is selected from one or a mixture of one or more of cement or cement clinker, steel slag, slag, pulverized coal ash, gypsum, lime and magnesia. In application, the profile control agent is prepared to a 1 to 20 percent suspension solution; and the suspension solution is injected into a deep part of stratum of an oilfield through profile modification equipment. The profile modifying agent fully utilizes mass oil sludge sand produced in the production process of various oilfields, realizes the aim of emission reduction; and the oil sludge sand is recycled and is used as the sand-consolidating and water-blocking profile modifying agent, thereby achieving the aim of consolidating sand, blocking water and improving extraction yield.

Thermosetting adhesive compositions for use in e.g., particleboard or fiberboard, wherein the compositions comprise a blend of a protein-based component and a polymeric quaternary amine cure accelerant, can provide the fast tack-building and curing, as well as ultimately good bonding characteristics normally associated with synthetic resin compositions. Preferably, the polymeric quaternary amine cure accelerant is the reaction product of a polyamidoamine and epichlorohydrin.

The invention discloses a cold-resistant wear-resistant nitrile rubber sealing material which comprises the following raw materials of: by weight, 100 parts of nitrile rubber, 3.5-8 parts of zinc oxide, 1 part of stearic acid, 1.5-3.5 parts of an antioxidant, 0.5-4.0 parts of an antifriction agent, 60-115 parts of carbon black, 2-10 parts of TP-95, 0.3-1.0 parts of a vulcanizing agent and 3.0-5.5 parts of an accelerant. A preparation method of the nitrile rubber sealing material comprises the steps of plasticating the nitrile rubber, adding the zinc oxide, the stearic acid, the antioxidant and the antifriction agent to carry out mixing, adding 1 / 2 of the carbon black to continue mixing after last mixing, then adding the residual carbon black and TP-95 to continue mixing, discharging glue stock and refining the glue stock with turning, obtaining a segment of rubber compound and placing the segment of the rubber compound, adding the rubber compound to a rubber covered roll of an open mill, adding the accelerant to carry out mixing, milling and packaging in a triangular bag, adjusting thickness and discharging material sheets. The nitrile rubber sealing material provided by the invention has better cold resistance and wear resistance.

The invention provides a process for producing a modified conjugated diene based polymer which attains favorable interaction between a rubber component and carbon black and / or silica, thereby improving dispersibility of the fillers, and which exhibits excellent properties such as heat-buildup-suppressing performance, fracture characteristics, and wear resistance; a modified conjugated diene based polymer produced through the process; a rubber composition containing the diene polymer; and a tire produced from the rubber composition and exhibiting the above properties. The process for producing a modified conjugated diene based polymer includes a step (a) of reacting a silicon compound with a conjugated diene based polymer having an active end so that the reaction takes place at the active end, the silicon compound having a protected primary amino group in the molecule thereof and a bi-functional silicon atom to which a hydrocarbyloxy group and a reactive group including a hydrocarbyloxy group are bonded, to thereby modify the active end, and a step (b) of performing condensation reaction which involves the compound having a bi-functional silicon atom, in the presence of a titanium compound serving as a titanium-based condensation-accelerating agent.