1355 results about "Hindered phenol" patented technology

A moisture curable polyolefin composition comprising:(a) a polyolefin, and for each 100 parts by weight of component (a),(b) 0.1 to 10 parts by weight of an unsaturated alkoxy silane;(c) 0.01 to 2 parts by weight of an organic peroxide;(d) 0.01 to 2 parts by weight of a silanol condensation catalyst;(e) 0.02 to 2 parts by weight of a hindered amine stabilizer;(f) 0.01 to 1 part by weight of a hindered phenol antioxidant; and(g) 0.01 to 1 part by weight of an arylamine antioxidant.

Compounds are synthesized that contain nitrogen and hindered phenol functionalities of an aromatic amine and hindered phenol for use as oxidative stabilizers for organic materials, paints, lubricants, elastomers, and in other applications. The disclosed methods can efficiently synthesize target monomers and polymers without the use of expensive catalysts. Further, the disclosed methods can scale up to industrially useful quantities. In general, the methods provide an improved, highly efficient and economical process for the synthesis of macromonomers having nitrogen containing moiety and sterically hindered phenols and their corresponding polymers.

The invention provides a low-smoke halogen-free inflaming-retarding cable material and preparation method thereof. The cable material comprises 5 to 15 parts (part by weight) of compatilizer that comprises maleic anhydride functional group grafted ethylene-vinyl acetate copolymer and maleic anhydride functional group grafted ethylene propylene terpolymer; 85 to 95 parts of base material formed by blending two or more than two of linear low-density polyethylene, ethylene-vinyl acetate copolymer and ethylene propylene terpolymer granular materials; 2 to 6 parts of composite antioxidant composed of the following antioxidants in terms of weight ratio: hindered phenol antioxidants : thiol ester antioxidants = 1 : (2 to 6); 20 to 40 parts of ammonium polyphosphate; 10 to 20 parts of pentaerythritol; 8 to 15 parts of melamine; 50 to 100 parts of composite inorganic fire retardant composed of the following fire retardants: magnesium hydroxide : zinc borate = (2 to 4) : 1; 2 to 6 parts of lubricant; 0 to 0.5 parts of metal passivator; 0 to 3 parts of crosslinking assistant agent; and 0 to 5 parts of halogen-free master batch. The invention has provided a harmless halogen-free inflaming-retarding cable material having high temperature tolerance, high tension, high elongation and high fire resistance.

A composition is disclosed that comprises a lubricant and at least a first antioxidant and a second antioxidant, the first antioxidant being a hindered phenolic and the second antioxidant being a thioether. Also disclosed is a method of increasing the oxidation stability of a lubricant comprising adding thereto at least a first antioxidant and a second antioxidant, the first antioxidant being a hindered phenolic and the second antioxidant being a thioether.

The invention discloses an antistatic blocking resistant smooth linear low-density polyethylene composition based on LLDPE as base, which comprises the following parts: 0.05-0.2% opening agent, 0.05-0.3% smooth agent, 0.05-0.3% antistatic agent, 0.05-0.2% anti-oxidant and 0.05-0.2% manufacturing and heat stabilizer, wherein the opening agent contains inorganic blocking resistant agent or organic opening agent; the smooth agent is amide, soap or organic silicane; the main auxiliary anti-oxidant is hindered phenol and phosphorus anti-oxidant; the antistatic agent adopts composite pattern of non-ionic typed antistatic agent and ion-typed antistatic agent. The making method compress the following steps: adopting LLDPE as base; adding blended auxiliary material into graining stage; or graining auxiliary agent into mother grain; adding mother grain; manufacturing specific material.

The invention discloses an anti-folding stress whitening resistant polypropylene (PP) material and a preparation method thereof. The material is prepared from the following raw materials in part by weight: 55 to 75 parts of co-polypropylene, 5 to 20 parts of POE Lc670, 10 to 30 parts of stress whitening resistant master batch, 0.05 to 0.15 part of white mineral oil, 0.1 to 0.3 part of hindered phenol antioxidant 1010, 0.1 to 0.3 part of phosphite ester antioxidant 1680 and 0.1 to 0.3 part of calcium stearate. The stress whitening resistant master batch comprises the following components in part by weight: 40 to 65 parts of EPDM or EPR or POE, 30 to 50 parts of nano active light CaCO3, and 0.5 to 2 parts of sodium polyethylene with low molecular weight. The polypropylene (PP) material is prepared by using a double-screw extruder with 9 temperature control areas according to the specific process conditions. The material has the advantages of good repeated bending resistance and stress whitening resistance, simple preparation process and low preparation cost.

A low-phosphorus lubricating composition has less than 600 ppm phosphorus, comprising at least 85 weight % of a lubricating base blend, and an additive comprising the following, as weight % of the total composition:

(1) an organomolybdenum compound at an amount which provides about 0.1-800 ppm Mo;

(2) a hindered phenol at about 0.1-2%; and

(3) a dithiocarbamate at about 0.1-2%; with a first proviso that where the dithiocarbamate does not comprise a metal dithiocarbamate, the additive additionally comprises:

(4) an alkylated diphenylamine at about 0.1-2%, and with a second proviso that where the organomolybdenum compound comprises molybdenum dithiocarbamate, it is considered a metal dithiocarbamate for purposes of the first proviso_[G1], but is considered an organomolybdenum compound for the purposes of calculation of the amount present in the total composition.

A lubricant composition suitable for fuel injected two-stroke cycle engines includes an oil of lubricating viscosity, an amount, sufficient to reduce or prevent piston scuffing, of a mixture of (A) at least one phenol selected from (A-1) an aminophenol and (A-2) a reaction product of a nitrophenol and an amino compound, and (B) at least one Mannich dispersant, amine dispersant, nitrogen-containing carboxylic dispersant, or ester dispersant. The composition further includes an amount, sufficient to reduce degradation of the lubricant composition upon exposure to oxygen or oxides of nitrogen, of a nitrogen-containing inhibitor, a hindered phenol inhibitor, or a sulfur-containing organic inhibitor.

The invention provides a polyphenylene oxide composition used for a photovoltaic junction box. The composition comprises the following components by weight: 55-95 parts of polyphenylene oxide, 45-5 parts of styrene resin, 2-10 parts of a flexibilizer, 5-20 parts of a phosphate fire retardant, 0.5-2.5 parts of an acid absorbent, 0.2-0.6 part of a hindered phenol main antioxidant, 0.2-0.6 part of a phosphite auxiliary antioxidant, 0.3-1.5 parts of an ultraviolet absorbent, 0.3-1.5 parts of a hindered amine light stabilizer, 0.1-0.5 part of a lubricating agent, and 0.1-1.0 part of toner. With the characteristics of good flame resistance, thermo-oxidative aging resistance, UV (ultraviolet) resistance, excellent electrical performances, the composition of the invention has flame retardancy up to grade UL945VA, RTI (relative temperature index)=110DEG C, CTI (comparative tracking index) PLC ( programmable logic controller)=2, and GWIT (glow wire ignition temperature)=750DEG C, thus satisfying the requirements in ROHS (restriction of hazardous substances) standard. Thus, the composition provided in the invention can be used for electronic and electrical component production of solar photovoltaic junction boxes, etc.

Disclosed is a process for manufacturing a polarizing plate protecting film comprising the steps of providing a film formation composition containing cellulose resin having a total acyl substitution degree of from 2.5 to 2.9, a plasticizer and a hindered amine or hindered phenol compound, heat-melting the film formation composition to obtain a melt, extruding the melt to be in the form of sheet, and cooling the extruded sheet to form a film, wherein the cellulose resin contains an alkaline earth metal in an amount of from 1 to 50 ppm and a residual sulfuric acid (in terms of sulfur content) in an amount of from 0.1 to 45 ppm, based on the weight of cellulose resin.

A method for manufacturing a cellulose ester film comprising the steps of 1) mixing a cellulose ester exhibiting a water content of not greater than 3.0 weight %, at least one plasticizer selected from the groups A and B in an amount of one to thirty weight % of the cellulose ester, and at least one additive selected from the groups of C and D in an amount of 0.01 to 5 weight % of the cellulose ester to obtain a mixture, group A: ester plasticizers formed from a polyhydric alcohol and a monohydric carboxylic acid; group B: ester plasicizers formed from a polyhydlic carboxylic acid and a monohydric alcohol; group C: hindered phenol anti-oxidants; group D: hindered amine light stabilizers, 2) heating to melt the mixture at a temperature (Tm) of between 150 and 300° C., and 3) forming a cellulose ester film with a melt casting method employing the melted mixture.

A lubricating oil composition having a total base number of at least about 8, comprising a major amount of oil of lubricating viscosity; an amount of one or more dihydrocarbyl dithiophosphate metal salt introducing into the lubricating oil composition no more than 0.06 wt. % of phosphorus; at least 1.2 wt. % of hindered phenol antioxidant; and boron, and/or a boron-containing compound or compounds in an amount providing the lubricating oil composition with at least 200 ppm by weight of boron, all weight percentages being based on the total weight of the lubricating oil composition.

The invention discloses a wide-temperature range and high-performance water-based damping paint. By the compounding of core-shell structure water-based polyacrylic emulsion and interpenetrated network structure water-based epoxy/polyurethane emulsion, the paint is combined with the advantages of three resins including acrylic resin, epoxy resin and polyurethane resin, based on different viscoelastic state temperature scopes of acrylic resin and epoxy/polyurethane resin, the temperature range after compounding is expanded, the wide temperature range scope from -20 to 60 DEG C is realized, and the paint is excellent in mechanical property; meanwhile, functional fillers including hindered phenol, lamellar mica powder and flake graphite are added, by the friction between viscoelastic state macromolecular chain segments, the hydrogen-bond interaction between the small molecular hindered phenol, the friction between the lamellar filler mica powder and the flake graphite, and the friction between the fillers and the macromolecular chain segment, the damping performance of the material is improved; with the additional flame retardant, the flame retardant property of the material is improved, so that the paint is environment-friendly and safe, and the oxygen index of the paint is more than 30; the technology is simple, special equipment is not needed, and the price is low.

A resin composition which comprises polylactic acid, does not release an isocyanate group at the time of production and has excellent hydrolysis resistance and a low environmental burden.

The resin composition comprises:

• • (A) 100 parts by weight of a resin component (component A) containing polylactic acid (component A-α);
  • (B) 0.001 to 10 parts by weight of a compound (component B) having one carbodiimide group and a cyclic structure in which first nitrogen and second nitrogen are bonded to each other via a bonding group, the cyclic structure consisting of 8 to 50 atoms; and
  • (C) 0.001 to 2 parts by weight of at least one antioxidant (component C) selected from the group consisting of a hindered phenol-based compound, a phosphite-based compound, a phosphonite-based compound and a thioether-based compound.

The invention relates to a powdered composite calcium zinc stabilizing agent and a preparation method thereof and belongs to the preparation of a stabilizing agent for plastic processing. The stabilizing agent consists of the following components in percentage by weight: 14 to 38 percent of poly-fatty acid resin calcium zinc, 20 to 45 percent of epoxy fatty acid calcium zinc soap, 10 to 15 percent of phosphite ester, 10 to 15 percent of beta-diketone compound, 11 to 23 percent of hindered phenol antioxidant and 10 to 15 percent of lubricant. The preparation method comprises the following steps of: throwing a poly-fatty acid resin, a hydroxide of an alkali-earth metal, an oxide of zinc, high alcohol and oleic acid according to proportion into a reactor to perform salifying reaction to obtain the poly-fatty acid resin calcium zinc; performing epoxidation of the oleic acid, hydrogen peroxide and glacial acetic acid serving as raw materials in the presence of concentrated sulfuric acid serving as a catalyst according to the proportion to generate epoxy fatty acid, directly reacting the epoxy fatty acid with calcium hydroxide to obtain the high-purity epoxy fatty acid calcium soap; and compounding the poly-fatty acid resin calcium zinc with the epoxy fatty acid calcium soap reasonably and then adding other auxiliary agents to obtain the stabilizing agent. The powdered composite calcium zinc stabilizing agent and the preparation method thereof can effectively solve the problems of low compatibility and low dyeing property at an initial stage of the conventional polyvinyl chloride (PVC) calcium zinc stabilizing agent.

The invention discloses a 1E-grade K1 type halogen-free flame retardant material for nuclear power plants. The material comprises the following substances: 100 parts of vinyl polymers, 1-20 parts by weight of polymer compatilizer, 0.5-10 parts by weight of organosilicon polymers, 1-10 parts by weight of complex antioxidant, 0.1-10 parts by weight of light stabilizer and 0.1-100 parts by weight of high molecular weight ammonium polyphosphate and/or 0.1-50 parts by weight of phosphate flame retardants and/or 0.1-50 parts by weight of melamine cyanurate and/or 0.1-50 parts by weight of melamine pyrophosphate, wherein the complex antioxidant is a complexing agent formed by blending hindered phenol main antioxidants, thioether auxiliary antioxidants, hindered amine auxiliary antioxidants and an anti-copper agent in a weight ratio of 1:(1-4):(1-2):(0.5-1). The material can serve as the insulating material of 1E-grade K1 type halogen-free flame retardant heat shrink tubes, wires and cables and cable accessories for nuclear power plants.

The invention relates to a functional nano titanium dioxide grafted with antioxidant molecules on the surface. The surface of the nano-titanium dioxide is coated with silica; an aminosilane coupling agent reacts with the silica and is grafted with an antioxidant. Meanwhile, the invention also relates to a preparation method of the functional nano-titanium dioxide grafted with the antioxidant molecules on the surface. According to the preparation method disclosed by the invention, the surface of the nano-titanium dioxide is coated with a layer of the silica and then the aminosilane coupling agent is used for bridging, and a hindered phenol antioxidant is chemically grafted onto functional nano-titanium dioxide particles. According to the functional nano-titanium dioxide grafted with the antioxidant on the surface, disclosed by the invention, light weathering property and thermal aging resistance of a polymer can be simultaneously improved; in addition, an additive has the advantages ofno toxicity, low possibility of seeping and high stability.

A slush molded layer comprised of a copolyether ester elastomer as a major component, a hindered phenol antioxidant, a thioether antioxidant, and a hindered amine light stabilizer is provided. The slush molded layer may further include a polysiloxane.

A thermoplastic resin molding composition comprising an alkylene aryl polyester, a core-shell impact modifier for enhancing heat resistance having a shell derived from an alkylacrylate and a rubbery acrylate core derived from an acrylate having 4 to 12 carbon atoms, an effective amount of a difunctional epoxy compound for enhancing hydrolysis resistance of the resin, and a combination of color enhancing stabilizers comprising a thioester stabilizer, a phosphite or phosphonite stabilizer and a hindered phenol stabilizer.