766 results about "Phenolic antioxidant" patented technology

Disclosed herein is a lubricating oil for bearings comprising

(a) a diester represented by General Formula (1)

wherein R¹ and R² are the same or different, and each represents a C₃-C₁₇ linear alkyl group; A represents a C₂-C₁₀ linear alkylene group or A represents a branched alkylene group consisting of a linear alkylene group, the linear alkylene group being the principal chain, and one or more alkyl groups (branches) bonded to the linear alkylene group, wherein the total number of carbon atoms of the linear alkylene group and the one or more alkyl groups is 3 to 10; with the proviso that when A is a branched alkylene group and has two or more alkyl groups, the two or more alkyl groups are not bonded to the same carbon atom; or a mixture of the diester with an additional base oil and

(b) at least one member selected from the group consisting of phenol-based antioxidants and amine-based antioxidants, and optionally containing (c) at least one member selected from the group consisting of phosphorus-based compounds and aliphatic linear monocarboxylic acids, and further optionally containing (d) at least one member selected from the group consisting of benzotriazole-based compounds and gallic acid-based compounds.

The instant invention relates to a lubricant composition stabilized against the deleterious effects of heat and oxygen. The composition comprises a hydrotreated or hydrodewaxed oil and an effective antioxidant stabilizing amount of a mixture of a phenolic antioxidant; an N,N-disubstituted aminomethyl-1,2,4-triazole; an aromatic amine antioxidant; an alkyl phenoxy alkanoic acid; and an N-acyl sarcosine derivative. Optionally, further additives are added to the subject lubricant compositions.

A composition for the treatment, prevention or management of a condition in primates, especially humans comprising a phenolic antioxidant-chromium complex.

The invention discloses a hot melt adhesive which comprises the following components in parts by mass: 5-10 parts of EVA (ethylene-co-vinyl acetate), 2-6 parts of tackifier, 5-10 parts of diluent, 0.5-1.5 parts of antioxidant and 0.5-1.5 parts of plasticizer. The tackifier is one of rosin resin, petroleum resin, terpene resin, phenolic resin and epoxy resin; the diluent includes one or both of wax and low-molecular polyolefin; the antioxidant is phenolic antioxidant; and the plasticizer is DCHP (Dicyclohexyl phthalate). The EVA contains 20-30% of vinyl acetate monomer; and the wax is microcrystalline wax with molecular weight of 3,000-4,000 and melting point of 65-85 DEG C.

A polymer composite comprising a thermoplastic polymer compounded with a phenolic antioxidant, an organo-disulfide antioxidant, and a silver-based antimicrobial agent. The specified combination of antioxidant stabilizers is superior in inhibiting undesirable discoloration of thermoplastic polymers in the presence of compounded silver-based antimicrobial agents. A process of preparing such a composite, comprising compounding the phenolic antioxidant and organo-disulfide antioxidant with the thermoplastic polymer prior to compounding the silver-based antimicrobial agent with the thermoplastic polymer.

The present invention provides a manufacturing method of copolyester for low acetaldehyde content of PET bottles. The polyethylene terephthalate (PET) polymer is added with an appropriate modifier in order to decrease the production of acetaldehyde caused by pyrolysis side reaction during the blow molding process of PET bottles. The modifier comprises stabilizer and primary antioxidant, wherein the stabilizer is an inorganic phosphorous compound with an addition quantity of 0.003~0.5 weight % based on the weight of the total copolyester copolymer and the primary antioxidant is a hindered phenolic antioxidant containing Ca+2 with an addition quantity of 0.005~5.0 weight % based on the weight of the total copolyester copolymer. The present invention owns an improving effect of decreasing the production of side product-acetaldehyde at least 30% than those without the addition of said modifier.

A resveratrol-containing composition capable of providing a therapeutic benefit to a subject such as modulation of a biological activity, improving cell transplantation therapy, or improving macular degeneration or dystrophy treatments. The compositions comprise trans-resveratrol, a metal chelator, and one or more additional antioxidants such as phenolic antioxidants or vitamin D.

The invention relates to an isothermal graded quenching oil composition and uses thereof, mainly aims at further improvement of cooling performances, thermal oxidation stability and brightness of isothermal graded quenching oil in the prior art, and solves the problem that the isothermal graded quenching oil has no corrosion resistant performance on workpieces after quenching. The isothermal graded quenching oil composition comprises the following components: by weight, a) 0.3 to 8 parts of a cooling accelerant; b) 0.1 to 3 parts of an antioxidant; c) 0.001 to 1 part of a brightener; d) 0.03 to 5 parts of an anti rust agent; and e ) 78 to 98 parts of base oil; in the technical scheme, the antioxidant is selected from a phenolic antioxidant or a mixture of amine antioxidants, the technical scheme can well solve the problem, and the isothermal graded quenching oil composition can be used for quenching of wearable steel balls, saw blade, auto gearbox gears, gear rings, gear sleeves, shafts and other precision parts.

Provided is a curable silicone resin composition including (A) a siloxane-based compound containing at least 2 addition reactive carbon-carbon double bonds within each molecule, (B) a siloxane-based compound containing at least 2 hydrogen atoms bonded to silicon atoms within each molecule, (C) a hydrosilylation reaction catalyst, (D) a phenol-based antioxidant, and (E) a hindered amine compound. Also provided are an optical semiconductor sealing material including such a composition, and an optical semiconductor device that has been sealed with such a composition. The curable silicone composition generates a cured product with high hardness and strength, excellent transparency, and excellent light transmittance and photostability particularly in the short wavelength region.

The present invention relates to an engine oil lubricant composition for use in internal combustion engines comprising one or more molybdenum containing compounds that deliver 1-1000 ppm molybdenum to the finished oil, one or more phosphorus containing compounds that deliver 25-650 ppm phosphorus to the finished oil, and one or more poly(meth)acrylate viscosity index improvers (VI improvers) that may or may not be functionalized, for improved fuel economy and turbocharger related deposits. In addition, the composition comprises an antioxidant system which is carefully balanced to provide improved fuel economy, comprising an aminic antioxidant, a phenolic antioxidant and an ashless dithiocarbamate. Additionally, the formulated oil may contain a dispersant poly(meth)acrylate, in addition to the PAMA VI improver, to reduce the amount of traditional succinimide dispersants.

The invention discloses an anti-crocking rubber sole and relates to a rubber sole. The invention provides the anti-crocking rubber sole with low production cost, long service life, ageing resistance and no crocking and a method for manufacturing the same. Raw materials comprise A and B; the raw material A comprises 72.9 percent of cis-1,4-polybutadiene rubber, 20.2 percent of caoutchouc, 6.9 percent of styrene-butadiene rubber, 44.5 percent of precipitated hydrated silicon dioxide, 0.8 percent of bi-(3- propyl triethoxysilane)- tetrasulfide, 5.3 percent of zinc oxide, 3.5 to 4.5 percent of polyethylene glycol, 1.0 to 2.0 percent of stearic acid, 1.1 percent of rubber viscosity increaser, 0.8 percent of activating agent, 0.3 to 0.6 percent of phenolic antioxidant, 0.4 percent of tackifying resin and 1.0 percent of antifogging agent; the raw material B comprises insoluble sulfur, tetramethylthiuram monosulfide and an accelerant; and the ratio of the A to the insoluble sulfur to the tetramethylthiuram monosulfide to the accelerant is 500 : 1.0-2.5 :1.0 : 0.7. The anti-crocking rubber sole is prepared by banburying, mill opening, sulfur treatment, measurement of a vulcanizing curve, oil pressure molding and a crocking test.

The present invention includes a polyolefin composition having reduced coloration with aging. The polyolefin composition comprises at least one polyolefin, an effective amount of a primary phenolic antioxidant to promote long term thermal stability of the polymer composition, and an effective amount of a phosphite processing stabilizer to promote thermal stability of the polymer composition during melt processing. The polymer composition further comprises an effective amount of a sacrificial phosphite antioxidant to reduce the yellowness index of the polymer composition. The sacrificial phosphite antioxidant and the phosphite processing stabilizer are not the same compound.

A method of making a hindered phenolic antioxidant is disclosed wherein the method comprises:

reacting an ester of the formula:

wherein

• • R¹, R², and R³ are independently selected alkyl groups and n is 0, 1, or 2, with an aliphatic polyhydroxyl alcohol of the general formula R(OH)_n wherein R is an aliphatic group of from 2 to about 12 carbon atoms and n is an integer of from 2 to 7, provided that one hydroxyl is primary and the others are secondary or tertiary, in the presence of a strong acid catalyst; then, neutralizing the strong acid catalyst with an overbased detergent; and isolating the hindered phenolic antioxidant after the neutralization step.

Rasticizer compositions comprising epoxidized fatty acid mono-esters and epoxy-esters are provided. The plasticizer compositions are free of compatibilizer and may contain metal perchlorates and/or phenolic antioxidants and/or conventional plasticizers. The compositions are useful for reduced extraction and lower volatility of halogenated polymers containing the compositions. The plasticizer compositions give reduced extraction of at least 15%. A process for making the plasticizer compositions is also provided. A method of reduced plasticizer extraction from halogenated polymers, such as polyvinyl chloride, is further provided. The plasticizer compositions may be added to PVC resins in effective amounts ranging from 1 and 200 phr.

The invention provides a compressor oil compound which comprises the following materials on the basis that the weight of base oil is 100 percent: (1) a main amount of hydrogenization mineral oil base oil; (2) 1 to 15 weight percent of ashless dispersant; (3) 0.01 to 1 weight percent of the combination of half-hindered phenolic antioxidant or amine antioxidant and half-hindered phenolic antioxidant; (4) 0.05 to 2 weight percent of antiwear additive; (5) 0.01 to 0.5 weight percent of friction modifier; (6) 0.01 to 0.2 weight percent of metal passivator; and (7) 0 to 1000ppm of antifoamer. The compressor oil has the advantages of high viscosity index, excellent lubricating property and good oxidative stability.

The invention relates to a chain lubricating oil composite agent and a preparation method thereof. The chain lubricating oil composite agent is characterized in that it comprises the following components by mass percentage: 40-60 mass% of softening oil; 10-20 mass% of an amine antioxidant; 8-20 mass% of a phenolic antioxidant; 8-20 mass% of an antiwear agent; 1-10 mass% of a friction improver; and 1-10 mass% of an ashless antirust agent. The high temperature chain lubricating oil prepared from the composite agent provided by the invention has superstrong oxidation resistance, wear resistance and corrosion resistance, so that the high temperature chain can acquire lower friction coefficient in work, safer and more reliable machine operation is ensured, the comprehensive performance is more excellent, and the antirust capability of the chain metal is further enhanced.

Compositions containing phenolic antioxidant solutions are provided. The invention further provides methods of making and using such compositions as well as compositions that contain both biodiesel and at least one antioxidant concentrate solutions and blended fuel compositions containing biodiesel blended with other fuels.

A lubricant composition is suitable for use in diesel engines and is resistant to degradation by oxidative by-products of biodiesel fuel. The composition includes (A) a base oil, (B) at least one diphenylamine antioxidant, and (C) at least one antioxidant. The antioxidant (C) is selected from the group consisting of a sulfur containing phenolic antioxidant, a phenyl-alpha-naphthylamine antioxidant, and combinations thereof. The lubricant composition is formed using a method. In the method, the (A) base oil has an initial oxidation value measured according to ASTM D 6186. In addition in the method, the lubricant composition includes up to about 6 wt % of the biodiesel fuel and has a final oxidation value measured according to ASTM D 6186 that is equal to or greater than the initial oxidation value of the (A) base oil.

The invention discloses an aluminum rolling oil additive composition, the present invention is characterized in that the composition comprises the following components by mass percentage: (1) oiliness agent: 30 to 48%; (2) antiwear agent containing phosphorus: 3 to 15%; (3) oleamide: 26 to 35%; (4) de-emulsifier: 0.5 to 2.8%; (5) phenolic antioxidants: 0.1 to 0.5%; (6) hydrogenated base oil: the balance. The oiliness agent is monoolein and/or oleic acid; the antiwear agent containing phosphorus is one or more selected from amine sulfuric-phosphoric diester, phosphorothioate and its amine salt, phosphate ester and its amine salt; the de-emulsifier is a combination of two types non-ionic high-molecular surfactants. According to the invention, an antiabrasive agent oleamide and the phosphatide antiwear agent are combinated with aliphatic acid and fatty acid ester, which achieves the goal of reducing the friction coefficient and improving the annealing performance; and the application amount of the additive and the cost of aluminum rolling oil can be reduced.

Procedures for deriving antioxidant phenolics from fruits and/or vegetables reliant upon milling to an aqueous slurry, subjection in the resultant aqueous phase to temperatures in the range of from 125° C. to 220° C. so as to derive in solution phenolics from the fruit and/or vegetable material, and thereafter some procedure of harvesting of the antioxidant phenolic composition. Such products in a powder, liquid concentrate or solution form are capable of being ingested for the purposes of ameloriating the health damaging effects of free radicals in the body, or being incorporated into food stuffs or cosmetics to act as antioxidants to prevent oxidative deteriation in the products such as the formation of off-flavours.