523 results about "Organic peroxide" patented technology

A continuous process for preparing a multimodal polyolefin composition made from or containing one or more antioxidants, including the steps of: preparing a multimodal polyolefin in form of a polyolefin powder, having a mass-median-diameter D50 in the range from 300 μm to 2500 μm, in a series of polymerization reactors; mixing the polyolefin powder and an organic peroxide without melting the polyolefin powder; melting and homogenizing the mixture within an extruder device; adding one or more antioxidants to the molten polyolefin composition; homogenizing the combination of molten polyolefin composition and antioxidant, thereby forming an antioxidant equipped molten polyolefin composition; and pelletizing the antioxidant equipped molten polyolefin composition.

The purpose of the present invention is therefore to provide a thermally conductive composite tape which is in a form of sheet and, therefore, easy to handle, excellent in strength and electrical insulation, easily stick to an element or heat release-member, and shows strong adhesion to the heat-release member. The present invention provides a thermally conductive composite comprising a first thermally conductive adhesive layer, a reinforcing layer (A) layered on one surface of the first thermally conductive adhesive layer, and a second thermally conductive adhesive layer layered on a free surface of the reinforcing layer (A), wherein the first and second thermally conductive adhesive layers comprise, independently of each other, a silicone composition comprising the following components (a) to (e): 100 parts by mass of (a) linear or branched organopolysiloxane, 1,000 to 3,000 parts by mass of (b) thermally conductive filler, 100 to 500 parts by mass of (c) silicone resin, 1 to 10 parts by mass of (d) organohydrogenpolysiloxane, and 0.5 to 5 parts by mass of (e) organic peroxide.

A rubber composition having a nitrile and ethylene terpolymer, in particular a polymer blend of an acrylonitrile-butadiene copolymer (NBR) and an ethylene polymer. The composition has an NBR in an amount of from 30 to 50% by weight of the total composition. In some embodiments, the ethylene polymer is an EPDM rubber, an ethylene acrylic elastomer, or a chlorinated polyethylene. The composition may include an organic peroxide or other accelerator. The rubber composition can be used for synchronous belts having medium temperature to high temperature resistance, good fuel resistance, flexibility as low as-40 DEG C, and high structural integrity. In addition, the rubber composition allows the amount of a reinforcing material such as carbon black to be reduced.

To provide a resin composition which comprises a polyphenylene ether having excellent solvent solubility and has excellent electrical properties, copper foil peeling strength and solvent resistance.SOLUTION: There is provided a resin composition which comprises (A) a polyphenylene ether A containing a repeating unit derived from the following phenol and having a molecular weight distribution (Mw / Mn) determined by gel permeation chromatography (GPC) of 2.0 to 6.0 and a number of OH groups per molecule of 0.8 to 3.0 pieces / molecule, (B) a polyphenylene ether B containing a repeating unit derived from the following phenol and at least one partial structure of the following structures in the molecular skeleton (excluding those corresponding to the polyphenylene ether A), (C) a triallyl isocyanurate and / or a triallyl cyanurate and a crosslinking agent other than (C') a triallyl isocyanurate and a triallyl cyanurate as optional components and (D) an organic peroxide.SELECTED DRAWING: None

The present disclosure relates to the use of an aqueous emulsion of an organic peroxide comprising 0 to 0.17 wt% of at least one emulsifier for the preparation of polyvinyl chloride having an increased drying rate.

The invention relates to a method for curing a curable composition, comprising a step of curing at a temperature of 100° C. or more and in the absence of oxygen, said composition with an organic peroxide formulation comprising a drying oil. The present invention also pertains to articles obtainable by said method.

The invention discloses a method for green and safe synthesis of epsilon-caprolactone from cyclohexanone, and belongs to the technical field of heterocyclic compound and organic chemical raw material manufacturing, and the method comprises the following steps: oxidizing and converting cyclohexanone into a mixture aqueous solution of epsilon-caprolactone, 6-hydroxyhexanoic acid and 6-hydroxyhexanoic acid linear oligomers / oligomers, removing peroxides in the mixture aqueous solution, and obtaining the epsilon-caprolactone. The method comprises the following steps: carrying out polycondensation on a mixture of epsilon-caprolactone, 6-hydroxycaproic acid and a 6-hydroxycaproic acid linear oligomer / oligomer so as to convert the mixture into the 6-hydroxycaproic acid linear oligomer / oligomer, and depolymerizing the 6-hydroxycaproic acid linear oligomer / oligomer so as to convert the 6-hydroxycaproic acid linear oligomer / oligomer into epsilon-caprolactone or / and epsilon-caprolactone cyclic dimer. According to the method, cyclohexanone and hydrogen peroxide are used as reaction raw materials, the organic peroxide is prepared in a non-centralized manner in the whole route, and an organic solvent is not used, so that the combustion and explosion risks caused by the use of a large amount of organic peroxide and organic solvent are greatly reduced, and the yield of epsilon-caprolactone is improved through a polycondensation-depolymerization scheme.

To provide an acrylic adhesive composition containing a polytetramethylene glycol-based urethane (meth)acrylate compound as an essential component, which has low viscosity and excellent workability, and exhibits high peeling strength and shear strength.SOLUTION: An acrylic adhesive composition contains: (A) a polytetramethylene glycol-based urethane (meth)acrylate compound having a (meth)acrylate group at a terminal, which is obtained by reacting (a) a polyol compound and (b) a polyisocyanate compound in a molar ratio of the component (b) to the component (a) of 0 to 0.5 with (c) a terminated (meth)acrylating agent; (B) a polymerizable vinyl monomer; (c) an organic peroxide; and (D) a reducing agent, as essential components.SELECTED DRAWING: None

To provide an anisotropic conductive film which exhibits low temperature quick curability, and good adhesive strength and connection reliability, and can be stably slit in a narrow width.SOLUTION: An anisotropic conductive film has such a structure that a radical-polymerizable conductive particle-containing resin layer is laminated on a radical-polymerizable / anionic polymerizable insulating resin layer. The insulating resin layer contains: a radical polymerization initiator containing a film-formation component containing two kinds of phenoxy resins having different molecular weights, a radical-polymerizable component containing a first acrylic compound, an anionic polymerizable component containing an epoxy-based compound and an organic peroxide having a one-minute half-life temperature of 125°C or lower; and an anionic polymerization curing agent containing an organic acid hydrazide compound having a melting point of 160°C or lower. The conductive particle-containing resin layer contains a radical polymerization initiator containing a film-formation component containing a third phenoxy resin, a radical-polymerizable component containing a second acrylic compound, conductive particles and an organic peroxide having a one-minute half-life temperature of 125°C or lower.SELECTED DRAWING: Figure 1

The invention discloses a low-temperature stable organic peroxide emulsion and a safe preparation method thereof, and the emulsion comprises diisobutyryl peroxide, a hydroperoxide stabilizer, an organic solvent containing 2, 2, 4-trimethyl-1, 3-pentanediol diisobutyrate, and an emulsifying / dispersing agent. Through a low-temperature high-shear dispersion coupling cyclic emulsification method and in combination with real-time combustible gas / oxygen / smoke monitoring, the problem of freezing of the emulsion under an extremely cold condition (-40 DEG C) and the decomposition risk in the preparation process are solved. The obtained emulsion has significantly improved storage stability (greater than or equal to 85 days), low viscosity and excellent fluidity, and is suitable for industrial production.

An ultrahigh temperature, low scorch method of rapidly making a crosslinkable compound composition comprising a homogeneous mixture of a thermoplastic polyolefin, antioxidant, and curative additives comprising one or more organic peroxides and one or more multialkenyl crosslinking coagents. The method avoids soaking towers and lengthy soaking times, and yet makes a fully crosslinkable, homogeneous compound composition with minimal or no premature crosslinking of the thermoplastic polyolefin(s).

The invention provides high-weather-resistance and anti-aging silicone rubber and a preparation method and application thereof.The high-weather-resistance and anti-aging silicone rubber is prepared from, by mass, 100 parts of methyl vinyl silicone rubber, 30-60 parts of white carbon black, 6-8 parts of an alkyl silane coupling agent, 0.5-2 parts of a hindered amine silane coupling agent, 0.5-2 parts of a vinyl silane coupling agent and 3-5 parts of vinyl MQ silicone resin. 1-1.5 parts of vinyl hydroxyl silicone oil; 1-3 parts of organic peroxide; wherein the hindered amine silane coupling agent is obtained by reacting hindered amine with an isocyanate silane coupling agent. Through the formula design, the excellent toughness of the silicone rubber can be maintained, and meanwhile, the long-term weather resistance and the mechanical property retention rate of the material under ultraviolet radiation and humid and hot conditions can be remarkably improved.

Process for producing a salt comprising NaCl and / or KCl from the aqueous effluents from one or more organic peroxide production processes, said process comprising the following steps (a) ensuring the pH of the aqueous effluents to be in the range from about 1-5, (b) separating the effluents in a liquid organic layer and an aqueous layer, (c) removing the organic layer, (d) raising the pH of the aqueous layer to a value in the range from about 6-14, and (e) crystallizing the salt from the aqueous layer having a pH in the range from about 6-14.

Provided are: a thermosetting silicone resin composition that has excellent adhesion to a cyclic olefin resin substrate (I) and is capable of imparting properties such as scratch resistance thereto; a laminate in which the substrate (I), a cured coating layer (II) formed from the composition, and an inorganic substance layer (III) are sequentially laminated; and a production method therefor.　In said laminate, the cured coating layer (II) contains a reactive silicone resin (A), a polyfunctional (meth)acrylate monomer (B), and an organic peroxide (C), and contains 34-80 parts by weight of (A), 19-65 parts by weight of (B), and 0.5-10 parts by weight of (C) with respect to 100 parts by weight of the total of (A), (B), and (C). The number of (meth)acrylic moles in (B) per 100 g of the composition is 0.20-0.60. (A) is obtained by hydrolyzing and condensing an alkoxysilane of formula (i) and a compound containing an alkyl silicate of formula (ii) or a partial hydrolysate thereof. The laminate is such that [moles of Si derived from (ii)-component-containing compound / moles of Si derived from (i) component] with respect to 100 moles of the total Si content satisfies the range of 0.2-4.0.

The utility model provides a production line for treating organic peroxide sewage, which relates to the field of sewage treatment and sequentially comprises an adjusting tank, a coagulative precipitation tank, a hydrolysis acidification tank, an A / O tank, an MBBR (moving bed biofilm reactor) tank, an MBR (membrane bioreactor) tank, a COD (chemical oxygen demand) separation device and an adsorption device. A water outlet of the regulating tank is communicated with a water inlet of the coagulative precipitation tank, and a water outlet of the coagulative precipitation tank is communicated with a water inlet of the hydrolysis acidification tank; a water outlet of the hydrolysis acidification pool is communicated with a water inlet of the anoxic pool, a water outlet of the anoxic pool is communicated with a water inlet of the aerobic pool, a water outlet of the aerobic pool is communicated with a water inlet of the MBBR pool, a water outlet of the MBBR pool is communicated with a water inlet of the MBR pool, a water outlet of the MBR pool is communicated with a water inlet of the water producing pool, and a water outlet of the water producing pool is communicated with a water inlet of the COD separation device through a water outlet pipe; a water outlet of the COD separation device is communicated with a water inlet of the adsorption device, and a concentrated water port is communicated with the ozone catalysis device. The device has the beneficial effect of effectively treating the organic peroxide sewage.

The invention belongs to the technical field of organic peroxides, and particularly relates to a preparation method of peroxide (2-ethylhexyl) tert-amyl carbonate. The preparation method comprises the following steps: (1) carrying out temperature control reaction on a tert-amyl hydroperoxide crude product and a salt-forming agent under the action of a phase transfer agent to obtain an intermediate; (2) compounding a phase transfer catalyst system, blending the phase transfer catalyst system with chloroformic acid-2-ethylhexyl ester, adding the mixture and the intermediate into a reaction kettle for substitution reaction, and after the substitution reaction is finished, standing and collecting an upper organic phase to obtain a TAEC crude product; and (3) adding a detergent into the TAEC crude product, stirring, standing, collecting an upper oil phase, and washing until the oil phase is neutral to obtain TAEC. By compounding the phase transfer catalyst system, the problems of more dicarbonate byproducts, lower TAEC yield and difficulty in catalyst recovery in the existing TAEC synthesis method are solved.

The present invention provides: a thermosetting silicone resin composition which has excellent adhesion to a cyclic olefin resin base material and is capable of imparting excellent pencil hardness; and a laminate which uses the thermosetting silicone resin composition.　The present invention specifically provides a thermosetting silicone resin composition which is used as a cured coating layer of a cyclic olefin resin base material, and which is characterized by containing: a reactive silicone resin (A) which contains, as a main component, a polyorganosilsesquioxane that is represented by general formula (1) [RSiO3 / 2]n (wherein R is an organic functional group that has a (meth)acryloyl group, and n is 8, 10 or 12) and has a cage structure in a structural unit; a polyfunctional (meth)acrylate monomer (B) that contains at least three (meth)acryloyl groups in each molecule; and an organic peroxide (C). The thermosetting silicone resin composition is also characterized in that: 24-80 parts by weight of the component (A), 19-75 parts by weight of the component (B), and 0.5-10 parts by weight of the component (C) are contained relative to a total of 100 parts by weight of the components (A), (B), and (C); and the total number of (meth)acrylic moles of the polyfunctional (meth)acrylate monomer (B) that contains at least three (meth)acryloyl groups in each molecule contained in 100 g of the composition is 0.20-0.75.

Disclosed is a preparation method for modified polypropylene, comprising the following steps: dissolving polypropylene in a solvent; and adding a Lewis acid and an initiator into the solution in which the polypropylene is dissolved, and then performing a grafting reaction, to obtain the modified polypropylene; wherein the Lewis acid is selected from at least one of boron trifluoride diethyl etherate, boron trifluoride methyl ether, boron trifluoride acetic acid and boron trifluoride propionic acid; and the initiator is an organic peroxide initiator. Further disclosed are modified polypropylene prepared by the described method, a separator and a preparation method therefor, and a lithium-sulfur battery. Lewis acid monomers are grafted onto molecules of the modified polypropylene provided in the present disclosure, and therefore the modified polypropylene is suitable for being prepared into a separator of a lithium-sulfur battery, and can improve the electrochemical performance of the lithium-sulfur battery.

The invention discloses a halogen-free flame-retardant thermoplastic vulcanized elastomer and a preparation method thereof, and belongs to the technical field of thermoplastic vulcanized elastomer materials. The preparation method comprises the following steps: epoxidizing ethylene propylene diene monomer by using an oxygen source to obtain epoxy ethylene propylene diene monomer, and carrying out blending vulcanization reaction on the epoxy ethylene propylene diene monomer, polypropylene, paraffin oil, a modified intumescent flame retardant synergist, a charring agent, organic peroxide, an assistant crosslinker, a flame retardant, a dispersing agent and an antioxidant in a reaction type double-screw extruder, the halogen-free flame-retardant thermoplastic vulcanized elastomer disclosed by the invention is good in flame retardant property, and the mechanical property and the aging property of the halogen-free flame-retardant thermoplastic vulcanized elastomer are remarkably improved.

The invention belongs to the field of photovoltaic technology, and provides a photovoltaic packaging adhesive film, a preparation method and application thereof, and a recovery method of a photovoltaic module. The photovoltaic packaging adhesive film comprises the following raw materials in specific amounts: matrix resin, a low-temperature cross-linking agent, a low-temperature catalyst, a silane coupling agent, an ultraviolet light stabilizer, an organic peroxide initiator, an assistant cross-linking agent and an alcohol compound serving as a reversible dynamic transesterification reaction group, the matrix resin is EVA (ethylene vinyl acetate), POE (polyolefin elastomer) and / or ethylene-butylene copolymer; the low-temperature cross-linking agent is a carboxylic ester type cross-linking agent, a bisoxazoline type cross-linking agent and / or a metal-organic ligand cross-linking agent with the reaction temperature of 150 DEG C or below; the low-temperature catalyst is a polynuclear metal catalyst, a solid acid resin catalyst, a solid base catalyst and / or a bimetallic MOF derivative catalyst with the reaction temperature of 150 DEG C or below. The adhesive film can realize recycling of the adhesive film and a photovoltaic module in a more efficient and energy-saving manner, is wide in adaptability, and has high crosslinking degree, peel strength and PID resistance.

The invention relates to the field of packaging adhesive films, and discloses a high-barrier adhesive film for a perovskite battery as well as a preparation method and application of the high-barrier adhesive film for the perovskite battery, the high-barrier adhesive film comprises the following raw materials: 80-95 parts of POE resin, 5-20 parts of high-barrier master batch and 0-2 parts of auxiliaries; the high-barrier master batch is prepared from the following raw materials in parts by weight: 100 parts of POE resin, 1 to 10 parts of oxygen barrier additive, 1 to 10 parts of UVB ultraviolet absorbent and 0.01 to 0.2 part of organic peroxide. According to the invention, the high-barrier master batch is added into the POE resin, and the master batch simultaneously contains the water-blocking POE resin, the oxygen-blocking olefine acid glyceride oxygen barrier additive and the ultraviolet absorbent for blocking UVB, so that the long-term aging stability of the perovskite battery can be maintained while the power generation efficiency of the perovskite battery is ensured.

A curable silicone gel composition including: (A) 100 parts by mass of a branched-chain organosiloxane that has a specific structure; (B) 0.1-50 parts by mass of a diorganopolysiloxane in which both molecular chain terminals are blocked with a diorganohydrogensiloxy group; (C) a platinum-based catalyst; (D) a phosphorous acid triester compound in an amount that is 3-15 molecules per one platinum atom in the (C) component, said phosphorous acid triester compound having a structure in which a chain alkyl group is bonded to an oxygen atom of phosphorous acid; (E) an organic peroxide for which the 10-hour half-life temperature is 120°C or greater, in an amount that is 5-50 times the amount of the (D) component; and (F) an oxidation inhibitor. This curable silicone gel composition demonstrates superior high-temperature storability and deep section curability.

The invention provides a rosin supplement / cationic rosin sizing agent, which is composed of rosin, a rosin supplement, a cationic polymer emulsifier and a dispersant, the use amount of the rosin supplement is 5-20wt% of the total use amount of the rosin and the rosin supplement, and the rosin supplement is formed by graft copolymerization of polyethylene wax, maleic anhydride and styrene. According to the rosin supplement / cationic rosin sizing agent, maleic anhydride and styrene are added into polyethylene wax to serve as grafting monomers, grafting modification is initiated by organic peroxide to obtain grafted modified polyethylene wax, then the grafted modified polyethylene wax and rosin are mixed and melted according to a certain proportion, a cationic polymer emulsifier and a dispersing agent are added, and water-in-oil emulsion is obtained; and finally adding hot water for phase inversion. The modified polyethylene wax is used as a rosin supplement to partially replace rosin to prepare the cationic rosin sizing agent, so that the stability and the sizing effect of the product can be greatly improved, the dosage of the rosin can be greatly reduced, and the production cost is reduced.

The application discloses a kind of bifunctional thick oil catalytic viscosity reduction system and viscosity reduction method, bifunctional thick oil catalytic viscosity reduction system is adjusted to be the catalytic-emulsion composite viscosity reduction system of mixed catalyst, oxidizing agent after using surfactant, wherein, catalyst is amphiphilic TM / C-NH2 Nanoparticle, the oxidizing agent is organic peroxide.Catalytic-emulsion composite viscosity reduction system is mixed with thick oil and heated to reservoir environmental temperature reaction after, reaction is completed after finishing to thick oil viscosity reduction.The application is configured into the catalytic-emulsion composite viscosity reduction system of water-in-oil by organic peroxide oxidizing agent compound emulsifier, in reservoir environment (50~180 DEG C), using the catalytic oxidation performance of catalyst viscosity reduction system and catalyst and oxidized oil oxygen-containing group adsorption self-assembly function, realize thick oil macromolecule depolymerization and wettability reverse, further improve the viscosity reduction efficiency.

To achieve an anaerobic adhesive composition capable of suppressing occurrence of coating failure during coating. The anaerobic adhesive composition of the present invention includes a (meth)acrylic monomer, an organic peroxide, a curing accelerator, and an isoparaffin wax.

To provide a toothed belt which suppresses permanent elongation and has improved flexibility. [Solution] A toothed belt (1) comprises a rubber layer (4) having a toothed rubber portion (42) on at least one surface side, a plurality of core wires (5) embedded in the rubber layer (4), an adhesive layer (31) adhered to the surface side of the rubber layer (4) on which the toothed rubber portion (42) is provided, and an impregnation layer (32) formed on the surface of the adhesive layer (31) and formed by impregnating a raw canvas with rubber, and a tooth cloth (3) adhered to the surface of the rubber layer (4) having the toothed rubber portion (42) and to the surface of the toothed rubber portion (42). The adhesive layer (31) contains an organic peroxide, the core wires (5) contain a latex component inside, and the adhesion area between the core wires (5) and the adhesive layer (31) is 40% or more and 50% or less of the surface area of ​​the core wires (5).

Provided is a photosensitive resin composition that contains (A) a photopolymerizable compound that has an ethylenically unsaturated group and an acidic substituent, (B) at least one of a silane coupling agent that has a (meth)acryloyl group and an alkoxysilyl group and a component derived from a silane coupling agent that has a (meth)acryloyl group and an alkoxysilyl group, (C) a thermosetting resin, and (D) an organic peroxide, the (C) thermosetting resin containing at least one of a maleimide resin and an allyl resin. Also provided are a photosensitive resin film that uses the photosensitive resin composition, a printed wiring board and a production method for the printed wiring board, and a semiconductor package.

The present invention relates to a composition comprising at least one mixture of organic peroxides containing a first organic peroxide of formula (I) and a second organic peroxide, n-butyl-4,4-di(tert-butylperoxy)-valerate. The invention also relates to the use of said composition for crosslinking at least one crosslinkable polymer.

The invention is suitable for the technical field of conductive films, and provides an anti-tilting high-reliability anisotropic conductive film and a preparation method thereof. The anisotropic conductive film is prepared from the following raw materials in parts by weight: 30 to 60 parts of polyurethane acrylic resin, 5 to 20 parts of non-acrylic functional polyurethane, 3 to 12 parts of XNBR, 2 to 12 parts of IBOA, 3 to 12 parts of M215, 1 to 6 parts of M340, 0.5 to 5 parts of phosphate, 0.2 to 3 parts of TiO2, 0.7 to 5 parts of organic peroxide initiator, 0.2 to 5 parts of modified nano silicon dioxide A and 2 to 28 parts of modified nano silicon dioxide B. According to the invention, modification treatment is carried out on two different kinds of nano silicon dioxide, so that the problems of tilting and bubbles in a COF terminal gap region in a crimping process are solved, synergistic improvement of low contact resistance and high tension is also realized, and the reliability, process tolerance and long-term use stability of the conductive film are remarkably enhanced.

A process for the preparation of a compound of the sterically hindered alkoxyamine class is described, the process comprises the step of alkylating a sterically hindered hydroxylamine compound to a corresponding sterically hindered alkoxyamine by reacting said sterically hindered nitroxyl compound with a compound capable of producing a carbon-central alkyl radical, typically a territorial or secondary alkyl radical, the compounds capable of generating carbon-center alkyl radicals are selected from thermal radical initiators that form radical species in the temperature range of 40 DEG C to 200 DEG C, and from photoinitiators that undergo light excitation when irradiated with UV light or visible light in the range of 180 to 700 nm, in particular UV light in the range of 180 to 380 nm, the compounds capable of generating carbon center alkyl radicals are typically selected from the class of organic peroxides, azo compounds, benzoyl derivatives, benzophenone derivatives, thioxanthone derivatives, benzoin derivatives, benzoyl phosphine oxide derivatives, and the like. The invention relates to a peroxide, for example, selected from the group consisting of diacyl peroxides of formula (A), peracid esters of this formula (A), and oxalic acid peracid esters of formula (D) R-CO-O-O-Z-R (A), r-Z ''-X-CO-CO-O-O-Z''-R (D) wherein each R independently represents a primary or secondary alkyl or cycloalkyl group, preferably comprising from 1 to 15 carbon atoms, and X is oxygen-O-or peroxy-O-O-, Z represents CO or an alkylene group bonded to a quaternary carbon atom, the quaternary carbon atom being an alkylene group of formula (C) R '-C-R' (C), wherein each R'is selected from alkyl groups having 1 to 15 carbon atoms, and Z "represents the alkylene group bonded to a quaternary carbon atom having the formula (C). The described process produces the corresponding O-alkylated derivatives of the sterically hindered hydroxylamines, typically compounds of the class referred to as N-O-alkyl HALS, with very high selectivity and conversion and without the need for the use of catalysts, in particular metal catalysts.