31 results about "Ethyl hydroperoxide" patented technology

The present application provides thiamine compounds shown in formula (I) and application thereof. The thiamine compounds of the present application can be used for preparing polyolefin antioxidants. The thiamine compounds of the present application introduce sulfide bonds in aryl secondary amine, so that the antioxidant contains naphthylamine groups of primary antioxidants and sulfide groups of auxiliary antioxidants, which not only can terminate free radicals by providing hydrogen protons, but also can react with hydroperoxides, so as to achieve the dual effects of primary and auxiliary antioxidants, and thus the antioxidant effect is significantly enhanced.

The invention relates to fluorocarbon chain modified cobalt nickel-aluminum hydrotalcite and a preparation method and application thereof, ions in the cobalt nickel-aluminum hydrotalcite are Co < 2 + >, Ni < 2 + > and Al < 3 + > respectively, and a fluorocarbon chain is prepared from at least one compound in formulas (I)-(III); comprising the following steps: S1, stirring and mixing a Co < 2 + > aqueous solution, a Ni < 2 + > aqueous solution, an Al < 3 + > aqueous solution and a urea aqueous solution in an inert gas atmosphere, then carrying out a hydrothermal reaction, and after the reaction is finished, carrying out post-treatment to obtain cobalt nickel-aluminum hydrotalcite; and S2, dispersing the cobalt nickel-aluminum hydrotalcite in anhydrous toluene, reacting the cobalt nickel-aluminum hydrotalcite with at least one compound in formulas (I)-(III) under the action of triethylamine in an inert gas atmosphere, and after the reaction is finished, performing post-treatment to obtain fluorocarbon chain modified cobalt nickel-aluminum hydrotalcite, the hydrotalcite is applied to preparation of naphthenic alcohol and naphthenic ketone by catalyzing partial oxidation of naphthenic hydrocarbon. The method has the advantages of high selectivity, high product yield, low content of naphthenic hydroperoxide in the reaction process, and high operation safety.

A titanium-containing silicon oxide capable of producing an epoxide in a high yield when used as a catalyst in a reaction for producing an epoxide from an olefin and a hydroperoxide, in which the titanium-containing silicon oxide satisfies all conditions 1 to 5: Condition 1: an average pore diameter is 10 or more; condition 2: 80% or more of the total pore volume has a pore diameter of 5-200; condition 3: the total pore volume is 0.2 cm3 / g or more; condition 4: the D50 of the titanium-containing silicon oxide is from 1.00 mm to 3.30 mm. And Condition 5: the (D90-D10) / D50 of the titanium-containing silicon oxide is 0.35-1.00.

A method for producing oxidized forms of waxes (polar waxes) or polyketones containing oxygen functional groups from polypropylene (PP), polystyrene (PS), and / or polyethylene (PE), which can be used as lubricants, adhesives, coating agents, etc. In one or more examples, hydroperoxides were used as oxidants to cleave C-C and C-H bonds at mild temperatures (e.g., 150°C). C-C bond cleavage reduces the number average molecular weight (M n ) is reduced to 500-5000 g / mol. This method has been successfully applied to the conversion of post-consumer polyolefin waste to produce polar waxes or polyketones.

The present application provides a catalyst for hydrogen peroxide acidolysis, a preparation method and application thereof, which comprises a solid catalyst modified by a strong acid and a salt aqueous solution; wherein the solid catalyst is at least one selected from natural white clay, activated white clay, bentonite or diatomite, and the salt aqueous solution contains at least one inorganic salt selected from sodium salt, potassium salt, magnesium salt and calcium salt. When the catalyst of the present application is used for hydrogen peroxide acidolysis, it has high hydrogen peroxide conversion rate and product selectivity.

The present invention relates to processes for preparing propylene oxide, comprising reaction of propene with ethylbenzene hydroperoxide in the presence of a catalyst, as well as to catalysts employed in such processes and to methods for their manufacture. The catalysts of the invention are prepared in a process comprising sol-gel-synthesis of catalyst hydrogel-precursor, drying of catalyst hydrogel precursor, calcining of dried catalyst hydrogel-precursor, and optionally hydrophobizing the calcined catalyst hydrogel-precursor. The catalysts of the invention comprise amorphous titanium doped silica comprising pentahedrally coordinated titanium species.

The invention relates to the technical field of high polymer materials, and discloses an anti-aging PP board and a preparation method thereof.The anti-aging PP board is prepared from, by weight, 60-80 parts of PP, 15-30 parts of glass fiber, 8-12 parts of nano calcium carbonate, 0.5-1 part of silane coupling agent, 2-5 parts of compatilizer, 5-8 parts of inorganic flame-retardant material, 0.5-2 parts of lubricant and 1-5 parts of modified anti-aging agent. And 0.5-4 parts of a modified flame retardant. The preparation of the modified anti-aging agent can effectively inhibit the aging phenomena of cracking, impact strength reduction and the like of the plate after long-term use by capturing free radicals and decomposing hydroperoxide; according to the preparation of the modified flame retardant, the combustion process is inhibited by generating non-combustible gas and generating free radicals, the flame retardance of the system is improved, and the modified flame retardant has the advantages of environmental friendliness, good compatibility, lasting flame retardance and the like.

The invention provides a high-temperature low-attenuation polypropylene insulating material and a preparation method thereof, and belongs to the field of high-molecular polymers. The polypropylene composite material comprises polypropylene and concentrated master batch, the concentrated master batch contains polypropylene, an antioxidant, a nucleating agent and white mineral oil. The antioxidant comprises a semi-hindered phenol (capturing free radicals), sulfur (decomposing hydroperoxide) and copper damage prevention (inhibiting catalytic oxidation of copper ions) composite system, the three antioxidants form a synergistic effect, and the thermal oxidation resistance of the material can be remarkably improved. According to the invention, the high-temperature low-attenuation polypropylene insulation material with high temperature resistance grade, low attenuation at high temperature and good extrusion moldability is prepared through a composite antioxidant system, nucleating agent regulation and control and a step-by-step granulation process; the cable especially meets the requirements for new energy automobile cables at present.

The present invention relates to chemical and biological warfare agent decontaminating compositions and methods for using the same to decontaminate animal skin and wounds thereon exposed to the agents. The compositions may comprise a peracid, a hydroperoxide, and a peroxyacid.

The invention relates to a preparation method of a bio-based 1, 5-pentamethylene diisocyanate product with yellowing resistance and high stability. A synergistic composite stable system composed of an efficient main antioxidant, an auxiliary antioxidant and a plurality of ultraviolet absorbents / light stabilizers in a scientific proportion is constructed. Wherein the main antioxidant is mainly used for capturing free radicals and blocking an oxidation chain reaction; the auxiliary antioxidant decomposes hydroperoxide to inhibit the hydroperoxide from further initiating the degradation of the material; the ultraviolet stabilizer effectively delays the color change process caused by illumination by absorbing or quenching excited state energy. The preparation method disclosed by the invention has the advantages of high process compatibility, easiness in acquisition of auxiliaries, simple compounding and post-treatment steps and convenience in large-scale popularization; the environmental protection property is outstanding, the yellowing resistance and the storage stability of the product are greatly improved, the normal-temperature closed storage period is prolonged to 6 months or above, the NCO content retention rate is greater than or equal to 96%, and the storage and transportation cost is reduced; the influence of thermal oxidation and photodegradation is resisted, and a complex application environment is adapted.

The invention relates to the technical field of rotational molding processing, and discloses an energy-saving rotational molding processing polyethylene blending composition and a preparation method thereof.The energy-saving rotational molding processing polyethylene blending composition is prepared from 100 parts of polyethylene, 0.02-0.1 part of a main antioxidant, 0.05-0.5 part of a methylene auxiliary and 0.06-1 part of an auxiliary antioxidant, and the auxiliary antioxidant is one or two of a phosphite antioxidant and a thioester antioxidant; the methylene auxiliary agent comprises one or more of allyl methylene and benzyl methylene; according to the composition, the methylene auxiliary agent and the auxiliary antibody are adopted, the methylene auxiliary agent can consume oxygen in a targeted mode to form hydroperoxide, the auxiliary antibody can rapidly decompose the hydroperoxide to form bound oxygen, after oxygen is consumed, the internal and external pressure difference of bubbles is increased, and the increased pressure difference can advantageously drive the bubbles to be discharged from high-viscosity polyethylene; bubble discharge is remarkably accelerated, insoluble impurities are not introduced, PIAT is remarkably reduced, and energy consumption of polyethylene rotational molding processing is remarkably reduced.

Crosslinked polymeric particles obtainable by copolymerization, in the presence of a chain transfer reagent, of at least one difunctional radically polymerizable monomer, optionally at least one monofunctional radically polymerizable monomer and at least one thiourea derivative according to the following Formula (I):in which R is an (n+1)-valent, aromatic, aliphatic, linear or branched C1-C50 hydrocarbon radical, which can be interrupted by one or more, preferably 1 to 8, particularly preferably 1 to 6, ether, thioether, ester, amide or urethane groups; PG is a radically polymerizable (meth)acrylate, (meth)acrylamide or vinyl group and n is 1 or 2. In combination with a hydroperoxide, the crosslinked polymeric particles are suitable as redox initiator system for the free-radical polymerization of compositions comprising at least one radically polymerizable monomer. These compositions are particularly suitable as dental materials.

The rate of rancidity development in oil-based sauces and dressings can be slowed by adding a mixture containing sequestering agents for dissolved oxygen and heavy metal ions, obtained from vinegar and fruit juices. The types and proportions of the mixture's components are chosen to promote a balanced flavor and neutral color, and to ensure adequate sequestration of both heavy metal ions and dissolved oxygen. The mixture is effective at delaying the development of rancidity from hydroperoxides and hexanal, similar to the commonly used chemical sequestering agent ethylenediaminetetraacetate (EDTA).

The present invention relates to a method for preparing 4-hydroxy-2-methylene-butanal, 4-hydroxy-2-methyl-but-2-enal and esters thereof of the formula (I.a) and (I.b) where R1 is as defined in the claims and the description, by subjecting isoprenol or an ester thereof to a photooxidation in the presence of a photosensitizer and an acylating agent. The invention relates moreover to certain hydroperoxides of the compounds (I.a) or (I.b), and to the use thereof as intermediates in the synthesis of compounds (I.a) and (I.b) or in the synthesis of retinol, stereoisomers and derivatives thereof.

The invention relates to an anti-wear lubricating oil composition and a preparation method thereof, and belongs to the technical field of high polymer materials. The anti-wear lubricating oil composition is prepared from the following components in parts by weight: 50 to 90 parts of poly-alpha-olefin base oil, 20 to 40 parts of pentaerythritol fatty acid ester, 0.05 to 0.5 part of silicone oil, 0.1 to 5 parts of a modified anti-wear agent, 0.1 to 3 parts of a modified antioxidant and 4 to 10 parts of a viscosity regulator, oxygen atoms of ester groups in the modified anti-wear agent compound are high in polarity and are adsorbed on the metal surface to form a lubricating layer, propylene glycol monomethyl ether solubilizes the base oil, transition chemical bonds are formed through intermolecular acting force, and a lubricating protective film is generated to improve the tribological performance; phosphorus atoms in the modified antioxidant stabilize phenoxy free radicals, the phosphorus group steric hindrance effect slows down self-degradation, phosphite ester decomposes hydroperoxide, and the stability of the lubricating oil is improved. The anti-wear lubricating oil composition prepared by the invention not only has a good anti-wear effect, but also has an excellent anti-oxidation effect.

The present disclosure relates to a method for preparing a tertiary alkyl organic peroxide, comprising: a) reacting a component containing at least one tertiary alcohol group with a compound containing at least one tertiary hydroperoxide functional group in the presence of a catalyst and an optional co-catalyst in a first condensation step to form a mixture comprising an organic phase containing a tertiary alkyl organic peroxide and an aqueous phase; b) separating the aqueous phase from the organic phase in a dehydration step; and c) continuing to react the component containing at least one tertiary alcohol group with the compound containing at least one tertiary hydroperoxide group in the presence of a catalyst and an optional co-catalyst in a second condensation step, wherein the molar ratio between the compound containing at least one tertiary hydroperoxide functional group and the component containing at least one tertiary alcohol group in the first condensation step is at least 3:1, and no dehydration occurs during the first condensation step.

The present invention relates to a cold emulsion radical polymerization process for a monomer mixture of 1,3-butadiene and a (meth)acrylate containing 1,3-butadiene and an alkyl methacrylate, wherein the polymerization reaction is initiated by a redox system comprising an organic hydroperoxide and an iron(II) salt in the presence of a mercaptan as a transfer agent. The relative amounts of initiator, transfer agent, and monomers lead to a macrostructure characterized by a novel compromise between the number-average molar mass, Mn, and the dispersity, Δ. This compromise further improves the rolling resistance performance of a tire comprising a rubber composition including an elastomer prepared according to the process of the invention.

The invention discloses environment-friendly conductive plastic and a preparation method thereof, and relates to the technical field of plastic. According to the invention, through an esterification reaction of 3, 5-di-tert-butyl-4-hydroxyphenylacetic acid and 1, 18-octadecane glycol, a long-chain alcoholic hydroxyl group is introduced to enhance the compatibility with polyethylene plastic, so that the product stably exists in the plastic and plays a role. The terminal hydroxyl group reacts with thiodipropionic acid to generate a novel antioxidant with a synergistic anti-oxidation effect, the phenolic hydroxyl group captures free radicals, and the thioester group consumes hydroperoxide, so that polyethylene oxidation is jointly prevented. In addition, the peel residues are added into the plastic, and after melt extrusion, the peel residues are semi-carbonized to form a microporous or layered carbon structure, so that the interface bonding force with the plastic is enhanced, and the strength is improved. Metal salts in the fruit peels are remained in a carbon layer, so that the formation of a continuous and compact carbon layer is promoted, and the flame-retardant effect is improved.

The present invention relates to methods of producing antimicrobial coatings on biomaterial substrates. The methods comprise: a) applying an inert plasma directly to a biomaterial substrate for about 1-5 minutes at a discharge power of about 60-100 watts, thereby producing an activated biomaterial, b) exposing the activated biomaterial to air for about 50 to about 100 minutes to generate hydroperoxide, hydroxyl, and / or peroxide reactive centers on the activated biomaterial, and c) placing the air-exposed activated biomaterial into an ammonium monomer solution with a concentration of about 20-50% (w / v) to induce graft polymerization, thereby initiating a free-radical surface grafting at reactive centers.

The invention relates to the technical field of edible oil, in particular to antioxidant edible oil as well as a preparation method and application thereof. The antioxidant edible oil is prepared from the following components: grease, an enzymatic xanthan gum-tea polyphenol compound, ascorbyl palmitate, vitamin E, astaxanthin, a phospholipid-selenium nanoparticle compound and a pigment. An enzyme catalysis xanthan gum-tea polyphenol compound is introduced to construct a stable interface isolation layer on the surface of edible oil, a physical film greatly delays diffusion and invasion of oxygen, and tea polyphenol molecules exposed at an interface can directly and efficiently remove interface free radicals; meanwhile, a phospholipid-selenium nanoparticle compound is introduced to construct an efficient catalytic regeneration system in an oil phase, the selenium nanoparticles catalyze and decompose hydroperoxide to block generation of new free radicals, and the selenium nanoparticles are matched with ascorbyl palmitate to realize reduction regeneration, so that an internal antioxidant system of the edible oil is formed; therefore, the oxidation resistance of the feed edible oil is enhanced.

The invention relates to the technical field of shampoo, in particular to anti-hair-loss and hair-care shampoo and a preparation method thereof. Comprising sodium laureth sulfate, cocamidopropyl betaine, polysorbate 80, adenosine, sulfydryl polyethylene glycol modified beta-cyclodextrin, selenized maleimide modified polyvinyl alcohol, propyl gallate, sodium chloride, phenoxyethanol, citric acid and essence. According to the anti-hair loss shampoo disclosed by the invention, the problem that adenosine is continuously damaged by hydroperoxide generated by automatic oxidation of polysorbate 80 in an existing anti-hair loss shampoo formula is effectively solved through three components, namely the sulfydryl polyethylene glycol modified beta-cyclodextrin, the selenized maleimide modified polyvinyl alcohol and the propyl gallate.

The present invention is a composition comprising a) an aqueous dispersion of polymer particles optionally functionalized with structural units of a phosphorus acid monomer and having a z-average particle size as measured using dynamic light scattering in the range of from 50 nm to 500 nm; b) a C4-C10-alkyl hydroperoxide; c) a C8-C10-alkyl phosphate or sulfate; with the proviso that when the polymer particles are not functionalized with structural units of the phosphorus acid monomer, the composition further comprises d) a hydrotrope. The composition of the present invention provides a biocide-free latex with relatively low concentrations of a hydroperoxide.

The invention relates to a curable silane-modified polymer composition comprising: (a) at least one silane modified polymer; (b) at least one secondary aromatic amine; (c) at least one sterically hindered phenol; (d) at least one hindered amine light stabilizer; (e) at least one ester of an unsubstituted or substituted benzoic acid; (f) optionally at least one C1-C8-alkyl hydroperoxide; and (g) optionally at least one C5 to C20-alkane. The invention also relates to an adhesive, sealant, or coating material comprising the curable silane-modified polymer composition and to the use of the curable silane-modified polymer composition in an adhesive, sealant or coating material.

Antioxidant blends comprising a phenolic antioxidant, a phosphite antioxidant, and a lactone-based antioxidant and for use in polymeric materials. The phenolic antioxidant may be configured to scavenge oxygen-centered free radicals in the polymeric materials. The phosphite antioxidant may be configured to scavenge unstable compounds, such as hydroperoxides, in the polymeric materials. The lactone-based antioxidant may be configured to scavenge carbon-centered free radicals in the polymeric materials. The antioxidant blends may be added to polymers to reduce the oxidation and degradation of the polymers to increase the service life of the polymers. Polymers comprising the antioxidant blends may have increased long-term durability and may be utilized at high temperatures and in humid conditions, such as pasteurization conditions.

The invention belongs to the technical field of polyvinyl butyral, and discloses efficient polyvinyl butyral and a preparation method thereof, a three-stage gradient acid water reuse pickling process is designed, a composite builder alkali washing and pre-neutralization step is matched, and the use amount of fresh water and the discharge amount of wastewater are greatly reduced through acid water graded storage and regular impurity removal, so that the production cost is reduced, and the production efficiency is improved. The water resource consumption and the wastewater treatment cost are reduced; meanwhile, residual polyvinyl alcohol and salt impurities in a filter cake are efficiently removed, and the influence of the impurities on the light transmission performance is avoided, so that the product can meet high-end scenes such as an automobile front windshield and a photovoltaic module which have strict requirements on the light transmission performance, and environment-friendly production and product quality are both considered; the composite antioxidant system is formed by compounding an antioxidant 1076, an antioxidant 168 and an ultraviolet absorbent UV-327 according to a specific proportion, the antioxidant 1076 captures thermo-oxidative aging free radicals, the antioxidant 168 decomposes hydroperoxide, and the ultraviolet absorbent UV-327 shields ultraviolet light.

The present disclosure relates to a recombinant microorganism in which the activity of an alkyl hydroperoxide reductase is modulated, and a method for producing O-phosphoserine, cysteine, and cysteine derivatives using the microorganism.

The application discloses a thioether polyphenol acrylic ester intramolecular composite antioxidant, a preparation method thereof and an ABS resin material, and has a structure shown in formula (1), formula (2) or formula (3). The antioxidant contains phenolic hydroxyl groups in a hindered phenol antioxidant which play a role in inactivating peroxide radicals, thioether groups in a thio antioxidant which play a role in decomposing hydrogen peroxide, and mono-acrylic esters which have a carbon radical capturing agent function, so that three effects can be realized in one molecule.

Method for producing a sealant material composition that forms a sealant layer of a pneumatic tire which is provided with the sealant layer on an inner tire surface, comprising the method: Addition of 0.1 to 20 parts by mass of a crosslinking agent, Addition of 0.1 to 40 parts by mass of an organic peroxide and Addition of 10 to 400 parts by mass of a liquid polymer per 100 parts by mass of a rubber component, and Addition of an amount of 0.1 to 20 parts by mass of carbon black per 100 parts by mass of the rubber component, wherein the rubber component is any natural rubber, butyl rubber or styrene-butadiene rubber, wherein, after mixing part of the rubber component and the carbon black, the crosslinking agent is mixed, and then the remaining amount of the rubber component is mixed with the organic peroxide and the liquid polymer, wherein the liquid polymer is selected from the group consisting of: liquid butyl rubber, liquid isoprene rubber, liquid butadiene rubber, liquid styrene-butadiene rubber, wherein the organic peroxide is selected from the group consisting of: dicumyl peroxide, t-butylcumyl peroxide, benzoyl peroxide, dibenzoyl peroxide, butyl hydroperoxide, p-chlorobenzoyl peroxide, 1,1,3,3-tetramethylbutyl hydroperoxide, and where the crosslinking agent is not the organic peroxide.

The application relates to the technical field of anti-aging agents, and discloses a preparation method of an anti-aging agent and application of the anti-aging agent in plastics, wherein the anti-aging agent contains a styrene group, can be well melt-grafted with polyolefins such as polypropylene under the action of an initiator such as dibenzoyl peroxide or dicumyl peroxide, has little influence on the mechanical strength of the polyolefin plastics, and can avoid the problem that physical blending has a great influence on the mechanical strength and use performance of the plastics. Meanwhile, the anti-aging agent contains a phenol group triazine structure, has unique ultraviolet absorption effect, and contains a hindered amine structure, can inhibit the photo-oxidation degradation reaction of the polyolefin plastics through various ways such as capturing free radicals and decomposing hydrogen peroxide, the plastics keep high tensile strength through xenon lamp irradiation accelerated aging experiment, and excellent thermal-oxidative aging resistance and ultraviolet irradiation aging resistance are shown.

A two part adhesive composition includes a first part and a second part. The first part comprises methyl methacrylate; a block copolymer of methyl methacrylate and a block copolymer of at least one of a C4-C9 alkyl acrylate or a C4-C9 alkyl methacrylate or a C2-4 hydroxyalkyl acrylate or a C2-4 hydroxyalkyl methacrylate; a free radical initiator including at least one of a peroxide initiator or a hydroperoxide initiator; and a radical inhibitor. The second part comprises methyl methacrylate; a crosslinking agent having two or more acrylate groups, methacrylate groups, or a combination thereof; an acrylic monomer including at least one of a phosphate group and a phosphonate group; and vanadyl acetylacetonate. A method of making a bonded article using the two part adhesive composition is also described.