283 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.

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.

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.

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 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.

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.

The invention discloses a metallocene polypropylene composite material as well as a preparation method and application thereof. The metallocene polypropylene composite material is prepared from the following components in parts by mass: 84.63 to 96.50 parts of metallocene isotactic polypropylene, 0 to 6 parts of polypropylene random copolymer, 3 to 9 parts of allyl elastomer, 0 to 3 parts of polypropylene wax, 0.10 to 0.55 part of organic peroxide degradation agent, 0 to 1.8 parts of hindered hydroxylamine ester degradation agent and 0 to 0.15 part of phosphate ester antioxidant. The metallocene polypropylene composite material is suitable for a melt-blowing processing technology, and the melt-blowing non-woven fabric of the metallocene polypropylene composite material has lasting filtering performance.

A method for making a homogeneous mixture of polyolefin solids and an organic peroxide without melting the polyolefin solids during preparation. The method comprises applying acoustic energy at a frequency of 20 to 100 hertz to a heterogeneous mixture comprising the polyolefin solids and the organic peroxide for a period of time sufficient to substantially intermix the polyolefin solids and the organic peroxide while maintaining the temperature of the heterogeneous mixture below the melting temperature of the polyolefin solids, thereby making the mixture homogeneous without melting the polyolefin solids.

To provide an adhesive film which exhibits low temperature quick curability and good adhesive strength and connection reliability, can be narrowly and stably slit, and has good temporary stickiness.SOLUTION: An adhesive film has a base material film subjected to release treatment, and an insulation resin layer which is provided thereon and exhibits radical polymerizability and anion polymerizability, and has a film width of 1.0 mm or less, further 0.8 mm or less, and has a length of 5 m or more. The insulation resin layer contains: a radical polymerization initiator which contains a film-formation component containing two kinds of film components having different molecular weights, a radical polymerizable component containing a first acrylic compound, an anion polymerizable component containing an epoxy-based compound, and an organic peroxide having a one-min half-life temperature of 125°C or lower; and an anion polymerization curing agent which is solid at normal temperature and contains an organic acid hydrazide compound.SELECTED DRAWING: Figure 1A

The present disclosure relates to novel encapsulant film compositions that provide anti-PID properties while maintaining good cure, adhesion, volume resistivity properties. The composition comprises: a) a polyolefin polymer; b) an organic peroxide; c) a silane adhesion promoter; and d) a crosslinking aid; and e) an anti-PID agent.

A method of breaking a filtercake in a wellbore may include circulating a breaker fluid into the wellbore having a filtercake on the walls thereon, the filter cake including copolymer formed from at least one acrylamide monomer and at least one sulfonated anionic monomer, the breaker fluid comprising: a base fluid; a mixture of hydrolysable esters of dicarboxylic acids; and an organic peroxide oxidant.

The present invention relates to an organic peroxide emulsion comprising: at least one organic peroxide; at least one emulsifier comprising at least one non-ionic surfactant comprising at least one fatty chain and / or a protective colloid agent; a combination of two or more anti-gelling agents comprising not more than 9.5 wt% of a first anti-freezing agent, at least one second anti-freezing agent, relative to the total weight of the emulsion of ethanol; and water. The present invention also relates to a process for preparing such an emulsion, the use of such an emulsion for the polymerization or copolymerization of one or more ethylenically unsaturated monomers, and a halogenated vinyl polymer obtained by using such an emulsion.

The invention discloses an organic peroxide reaction endpoint rapid detection method and application thereof, and belongs to the technical field of organic chemistry. The invention aims to solve the technical problems that the reaction endpoint of an organic peroxide initiator is difficult to judge, the generated organic peroxide is easy to decompose due to too long reaction time, and the reaction is incomplete and raw materials are remained due to too short reaction time, and provides a rapid detection method for acyl chloride residues in the organic peroxide reaction process. Therefore, the reaction endpoint is determined. According to the technical scheme, the method for rapidly detecting the reaction endpoint of the organic peroxide is characterized in that in the reaction process of an organic peroxide initiator, acyl chloride is gradually consumed, the content is reduced, and the acyl chloride completely reacts when the reaction endpoint is reached. Through reaction of different acyl chloride concentrations and hydroxylamine hydrochloride, a standard curve or a color card is established, the residual amount of acyl chloride is judged, and the reaction endpoint is accurately judged.

The present disclosure relates to an encapsulant film made from a curable composition comprising: (A) a polyolefin polymer; (B) an organic peroxide; (C) a silane coupling agent; and (D) a co-agent comprising a monocyclic organosiloxane of formula (I).

A resin composition containing an ethylenically unsaturated group-containing compound (A), an organometallic compound (B), and a mercapto group-containing compound (C), the ethylenically unsaturated group-containing compound (A) containing a (meth) acryloyl group-containing compound (A1), the content of the (meth) acryloyl group-containing compound (A1) is 40 parts by mass or more with respect to 100 parts by mass of the ethylenically unsaturated group-containing compound (A), and the organometallic compound (B) contains at least one selected from the group consisting of metals belonging to Group 7 elements, metals belonging to Group 8 elements, metals belonging to Group 9 elements, and metals belonging to Group 10 elements. The resin composition does not contain an organic peroxide.

Provided is a polymerizable composition including (a) a polymerizable component comprising a diol bis(allyl carbonate) and / or a pre-polymer thereof; and (b) a polymerization initiator component including: (i) a di(C6-C10 alkyl) peroxydicarbonate, and (ii) an organic peroxide having one peroxy, one peroxycarbonate, or one peroxybenzoate group and a 1,1-dimethylalkyl group bonded to a peroxy oxygen, where (ii) comprises a molecular weight ranging from 200 to 250 g / mole, the polymerization initiator (b) is free of diisopropyl peroxydicarbonate, (i) comprises an amount ranging from 4.87% to 7.90% by weight relative to the total solids of the polymerizable composition and (ii) comprises an amount within the range defined by the following formula: (4.406X2−0.592X+0.021)≤Y≤(0.726X2−0.121X+0.009) where X corresponds to the weight fraction of (i) and Y corresponds to the weight fraction of (ii). Also provided is a method of making an optical article from the polymerizable composition.

A synthetic fiber is disclosed, formed from a composition which is made of from about 1 to about 98 weight percent of at least one polyhydroxyalkanoate; from about 1 to about 10 weight percent of at least one nucleating agent selected from the group consisting of polyester waxes, behenamide, crodamide, stearamide, erucamide, pentaerythritol, dipentaerythritol, boron nitride, and mixtures thereof; and from about 0.1 to about 5 weight percent of at least one melt flow modifier selected from the group consisting of calcium stearate, zinc stearate, starch, diamide oligomers, organic peroxides, and mixtures thereof.

ELIMINATION OF IMPURITIES WITHIN AN ORGANIC PEROXIDE The present invention relates to the use of a zeolitic adsorbent material, to purify organic peroxides, and more particularly to eliminate the impurities present in these compositions of organic peroxides.

A liquid organic peroxide composition including: (a) di(tert-butylperoxy)diisopropylbenzene; and (b) at least one aliphatic organic peroxide selected from the group consisting of 2,5-dimethyl-2,5-di(tert-butylperoxy)hexane, di(tert-amyl) peroxide, di(tert-butyl)peroxide, and 2,5-dimethyl-2,5-di(t-butylperoxy)hexyne-3. The organic peroxide composition is a homogenous liquid at ambient temperature.

The invention discloses organic ketone peroxide neutralization reaction equipment which structurally comprises a reaction tank, a motor is fixedly installed at the middle end of the top of the reaction tank, the output end of the motor drives a stirring rod arranged at the middle end in the reaction tank to rotate, a lifting plate is installed on the upper middle portion of the stirring rod, the lower end of the lifting plate is connected with an exhaust hood, and the exhaust hood wraps the stirring rod. According to the present invention, according to the height of the liquid in the reaction tank during the neutralization reaction process, the floating ball is suspended on the liquid surface so as to drive the lifting plate to perform lifting adjustment, such that the defoaming plate is driven to be located at the upper layer of the liquid; the stirring rod rotates and drives the connecting outer ring and the eight defoaming plates to synchronously rotate at the same time, and the spring guide rods apply elastic guidance to the defoaming plates, so that the defoaming plates repeatedly and elastically swing on the spring guide rods, and the long needles arranged on the bottom surfaces of the defoaming plates puncture bubbles generated in the neutralization reaction process.

To provide a millable type fluorosilicone rubber composition which gives a cured product excellent in amine resistance and heat resistance.SOLUTION: A millable type fuluorosilicone rubber composition includes: (A) 100 pts.mass of a crude rubber-like organopolysiloxane expressed by the following formula (1) (where in the formula, R1 is independently a group selected from the group consisting of a 1-10C alkyl group, a 6-10C aryl group, and a 7-10C aralkyl group, R2 is a 2-8C alkenyl group, a and b are respectively integers of 1 or greater, c is an integer of 0 or greater, a+b+c=2,000 to 6,000, a / (a+b+c)=0.3 to 0.8, and siloxane unit bonds in a, b, and c brackets may be brock or random); (B) 10-100 pts.mass of a reinforcing silica having a specific surface area by a BET method of 50 m2 / g or more; and (C) a catalytic amount of an organic peroxide.SELECTED DRAWING: None

The invention discloses an elastic stress pipe and a preparation method thereof, and relates to the technical field of cable accessories. The elastic stress tube is prepared from the following raw materials in parts by weight: 70 to 100 parts of silicon rubber, 5 to 15 parts of carbon black, 20 to 40 parts of active high dielectric filler, 5 to 10 parts of active magnesium oxide, 30 to 60 parts of fumed silica, 3 to 6 parts of diphenyl silanediol, 0.5 to 1 part of antioxidant, 1 to 5 parts of lubricant, 0.5 to 1 part of sensitization cross-linking agent and 1 to 5 parts of organic peroxide. The elastic stress pipe with high and low temperature resistance (-50 DEG C to + 200 DEG C), high elasticity and high tear resistance can be obtained, and the elastic stress pipe can tightly wrap a cable, does not generate permanent deformation, is waterproof, avoids partial discharge, is long in service life, maximally evacuates electric field stress, and homogenizes an electric field near a cable shielding layer. The preparation method is simple, high in practicability and beneficial to industrial large-scale production.

Curable resin compositions having extended open times at ambient temperatures and short cure times at high temperatures are prepared using a curable resin curable by one or more liquid organic peroxides or blends thereof and an accelerator / activator accelerator comprising a metal salt and a thiol-functionalized organic compound.

Provided is a sealing member which is capable of suppressing the occurrence of cracks or the like during mold release in a mold molding step and which has excellent copper contamination resistance. A sealing member comprising a crosslinked body of a rubber composition containing the following components (A) to (E), the ethylene content of the component (A) being 50 mass% or more, the content of the component (B) being 30-90 parts by mass, the content of the component (D) being 0.5-10 parts by mass, and the content of the component (E) being 3-10 parts by mass per 100 parts by mass of the component (A). (A) at least one of an ethylene-propylene-diene rubber and an ethylene-butylene-diene rubber, (B) silica, (C) an organic peroxide, (D) a benzimidazole-based anti-aging agent, and (E) zinc oxide.

To provide a manufacturing method that suppresses yarn breakage, improves spinnability, and allows for the production of spunbond nonwoven fabric at a high production rate and with high uniformity. [Solution] A method for manufacturing spunbond nonwoven fabric, comprising the steps of: supplying raw material resin to an extruder, melting and kneading it with a screw in the extruder, melting and extruding the melted and kneaded raw material resin from the discharge hole of a die, pulling and stretching the spun raw material resin to form fibers; depositing the fibers to form a fiber web composed of the fibers; and forming the fiber web into a sheet, wherein the raw material resin is a mixture of resin pellets A, which are obtained by kneading a polypropylene resin and an organic peroxide and pelletizing them so that the pellet size is within a specific range, and resin pellets B, which are obtained by pelletizing the polypropylene resin as is, and the ratio of the pellet size of resin pellets A to the pellet size of resin pellets B is within a specific range.