1838 results about "Phosphite ester" patented technology

A lithium secondary battery comprising a positive electrode, a negative electrode, and a nonaqueous electrolyte, wherein the positive electrode or the negative electrode is an electrode obtained by depositing a thin film of active material capable of lithium storage and release on a current collector, the thin film is divided into columns by gaps formed therein in a manner to extend in its thickness direction and the columnar portions are adhered at their bottoms to the current collector, and the nonaqueous electrolyte contains at least one selected from phosphate ester, phosphite ester, borate ester and carboxylic ester having a fluoroalkyl group.

The present invention relates to catalyst system for propylene hydrogenation and formylation and process of catalytically synthesizing butyl aldehyde. The catalyst system is triaryl phosphine-Rh(I) catalyst system with proper additive, such as bisphosphite ester, in proper amount. Compared with similar available catalyst, the catalyst system has obviously higher catalytic acitivity, higher selectivity, higher stability and raised n-butyl aldehyde / isobutyl aldehyde ratio in the catalytically synthesized product.

A method of synthesizing a polynucleotide which can, for example, be used during fabrication of an array. A second nucleoside is coupled to a first nucleoside through a phosphite linkage, with the second nucleoside having a hydroxyl protecting group that is a non-carbonate protecting group. The product of the foregoing step is exposed to a composition which both oxidizes the formed phosphite to a phosphate and deprotects the protected hydroxyl of the coupled nucleoside. The method has particular application to fabricating an addressable array of polynucleotides on a substrate which carries substrate bound moieties each with a hydroxyl group.

The invention discloses a preparation method of phosphite ester. The method comprises the following steps: dissolving chlorinated phosphite ester in dichloromethane, dissolving phenol in triethylamine or a mixed solution of triethylamine and dichloromethane, mixing the solutions to react and obtain raw product, and purifying the raw product through post-treatment to obtain the desired product. The preparation method of phosphite ester of the invention uses dichloromethane as reaction solvent to synthesize phosphite ester; the preparation process does not have any link with high viscosity material, the product is easy to clean and filtrate, the chlorine ions in the product can be removed conveniently and effectively and the quality of the product can be increased.

The invention discloses a macromolecule heat conduction and dissipation blended composite material. The macromolecule heat conduction and dissipation blended composite material is prepared from, by mass, 35-75 parts of matrix resin, 0-10 parts of flexibilizer, 20-50 parts of heat conduction filler, 0.2-1.0 part of antioxidant 1010, 0.2-1.0 part of phosphite ester antioxidant 168, 0.5-1.5 parts of powder surface activation treating agents and 0.5-1.5 parts of lubricant. An automatic preparation method of the macromolecule heat conduction and dissipation blended composite material includes the steps of firstly, conducting surface treating on heat conduction filler for 20 min through powder surface activation treating agents in a high-speed stirring machine; secondly, making the heat conduction filler enter another high-speed stirring machine through an automatic conveying device to be evenly mixed with other materials; thirdly, automatically conveying the mixture obtained in the second step to an internal mixer to be mixed and kneaded for 15 min; fourthly, making the obtained mixture directly enter a double-screw extruder to be extruded and granulated. The prepared heat conduction and dissipation material has the high mechanical property and heat conduction performance, automatic and continuous production is achieved, a large amount of labor is saved, the production period is greatly shortened, the production cost is greatly reduced, and the macromolecule heat conduction and dissipation blended composite material can be widely applied to the fields of LED illumination, electronic electrical appliances, automobiles and the like where good heat conduction and dissipation performance is required.

The invention provides a preparation method of annular phosphonate or annular organic phosphate flame retardant. The steps are that (1) trimethylolpropane and trimethyl phosphate or triethyl phosphate are taken as the material, and react to synthesize into midbody under the condition of catalyzer; (2) phosphonate or organic phosphate is added into the midbody and is heated, and then the product of annular phosphonate or annular organic phosphate flame retardant can be obtained. The phosphite ester is selected from trimethyl phosphate and triethyl phosphate. The phosphonate is selected from dimethyl-phosphine and diethyl ethyl phosphine. The organic phosphate is selected from trimethyl phosphate, triethyl phosphate, phosphate propyl, tributyl phosphate and tricresyl aromatic ester. The invention overcomes the shortcomings of the prior art, the new preparation method of annular phosphonate or annular organic phosphate flame retardant is environment-friendly, solution is not needed, and the operation is simple. The termination product has excellent color and luster, low acid value and excellent viscosity; and does not need additional decoloration.

A composition comprising at least two different alkylaryl phosphites, wherein some alkyl groups have a different number of carbon atoms than other alkyl groups and wherein the composition is a liquid at ambient conditions.

Disclosed are a propylene polymer having a high crystallinity of a boiled heptane-insoluble component contained therein, a high stereoregularity and an extremely long mesochain (continuous propylene units wherein directions of alpha-methyl carbons are the same as each other), and a process for preparing said polymer. Also disclosed are a propylene block copolymer containing a crystalline polypropylene portion having a high crystallinity of a boiled heptane-insoluble component contained therein, a high stereoregularity and an extremely long mesochain, and a process for preparing said copolymer. Further disclosed is a propylene polymer composition comprising the above propylene polymer or propylene block copolymer and at least one stabilizer selected from a phenol type stabilizer, an organophosphite type stabilizer, a thioether type stabilizer, a hindered amine type stabilizer and a metallic salt of higher aliphatic acid. The propylene polymer of the invention is excellent in rigidity, heat resistance and moisture resistance, and can be favorably used for sheet, film, filament, injection molded product, blow molded product, etc. The propylene block polymer of the invention is well-balanced between rigidity, heat resistance and moisture resistance, and can be favorably used for sheet, filament, injection molded product, blow molded product, etc. The propylene polymer composition of the invention has excellent properties of the propylene polymer or the propylene block copolymer, and moreover is excellent in heat stability during the molding stage, long-term heat stability and weathering resistance. The propylene polymer composition can be favorably used for sheet, film, filament, injection molded product, blow molded product, etc.

A method and compositions for sulfurizing at least one phosphite or thiophosphite linkage in an oligonucleotide. The methods employ a phenylacetyl disulfide reagent (known as PADS), phenylthioacetic acid (PTAA) in the presence or absence or N-alkyl imidazole in industrially preferred solvents or solvents that are derived from renewable resources. The use of PTAA eliminates the need to “age” the PADS solution prior to its use in sulfurization reactions.

Disclosed are a propylene block copolymer containing a crystalline polypropylene portion having a high crystallinity of a boiled heptane-insoluble component contained therein, a high stereoregularity and an extremely long mesochain, and a process for preparing said copolymer. Further disclosed is a propylene polymer composition comprising the above propylene block copolymer and at least one stabilizer selected from a phenol type stabilizer, an organophosphite type stabilizer, a thioether type stabilizer, a hindered amine type stabilizer and a metallic salt of higher aliphatic acid. The propylene block polymer of the invention is well-balanced between rigidity, heat resistance and moisture resistance, and can be favorably used for sheet, filament, injection molded product, blow molded product, etc. The propylene polymer composition of the invention has excellent properties of the propylene polymer or the propylene block copolymer, and moreover is excellent in heat stability during the molding stage, long-term heat stability and weathering resistance.

Multidentate phosphite ligands are disclosed for use in reactions such as hydrocyanation and isomerization. The catalyst compositions made therefrom and the various catalytic processes which employ such multidentate phosphite ligands are also disclosed. In particular, the ligands have heteroatom-containing substituents on the carbon attached to the ortho position of the terminal phenol group.

A thermoplastic composition featuring an improved resistance to hydrolysis is disclosed. The composition comprises (i) thermoplastic polycarbonate resin (ii) about 0.01 to 3 percent of a compound selected from the group consisting of phosphite and phosphonite and (iii) an additive amount of an oligomer or polymer the structure of which features at least one pendant cyclic iminoether group per molecular chain. The additive amount is that which is sufficient to improve the resistance of the polycarbonate resin to hydrolysis.

The invention discloses a composition containing HFC-161 and a stabilizer, wherein the stabilizer is selected from one or more of epoxy compound, nitro-compound, hindered amines, hindered phenols, secondary arylamines, beta-diketones, phosphite esters, salicylic acid esters, cinnamic acid esters, hydroxybenzophenones, hydroxybenzoic acids, hydroxylphenyl benzotriazoles, hydroxylphenyl triazines, oxanilides, formamidines, polyhydric alcohols, ortho-formates, organosulfur compounds, olefins, ethanol amines and fatty amines. The composition provided by the invention is capable of keeping a stable state in a long time under the coexistence of air or oxygen, and capable of being used as a heat transfer composition in the form of a liquid or a gas, a refrigerant, an aerosol propellant and the like.

A composition is disclosed that comprises a blend of at least two different phosphites of the structurewherein R1, R2, and R3 are independently selected alkylated aryl groups and wherein said blend is a liquid at ambient conditions. The compositions are useful for stabilizing thermoplastic resins and elastomers.

The present invention relates to a tire having a rubber tread of a lug and groove configuration and of a co-extruded cap / base construction; wherein the tread cap is of a rubber composition which contains carbon black and is thereby of a black color; wherein a visible surface of at least one groove is of a rubber composition exclusive of carbon black and is of a non-black color and wherein said visible non-black colored rubber composition is a rubber layer which underlies said tread cap. Said visible non-black colored rubber is exclusive of any appreciable portion of, and preferably exclusive of, the surface of said tread lugs intended to be ground-contacting. In one aspect of the invention, said non-black colored rubber composition contains an amorphous precipitated silica reinforcement, preferably a pre-hydrophobated precipitated silica. In another aspect of the invention, said non-black colored rubber composition, and alternately, carbon black containing black colored rubber compositions adjoining said non-black colored rubber composition, is comprised a blend of at least one diene based elastomer and a brominated copolymer of isobutylene and p-methylstyrene together with an organo phosphite.

The invention provides a hydrocyanation process for the production of adiponitrile and other dinitriles having six carbon atoms, the process comprising:a) forming a reaction mixture in the presence of at least one Lewis acid, said reaction mixture comprising ethylenically unsaturated nitrites having five carbon atoms, hydrogen cyanide, and a catalyst precursor composition, by continuously feeding ethylenically unsaturated nitrites, hydrogen cyanide, and a catalyst precursor composition;b) controlling X and Z, wherein X is the overall feed molar ratio of 2-pentenenitriles to all unsaturated nitriles and Z is the overall feed molar ratio of hydrogen cyanide to all unsaturated nitrites, by selecting a value for X in the range from about 0.001 to about 0.5, and a value for Z in the range from about 0.5 / 1 to about 0.99 / 1, such that the value of quotient Q, whereinQ=X[(moles3PN+4PNinthefeed)(molesallunsaturatednitrilesinthefeed)]-Zis in the range from about 0.2 to about 10, wherein 3PN is 3-pentenenitriles and 4PN is 4-pentenenitrile; andc) withdrawing a reaction product mixture comprising adiponitrile;wherein the ratio of the concentration of 2-pentenenitriles to the concentration of 3-pentenenitriles in the reaction mixture is from about 0.2 / 1 to about 10 / 1;wherein the catalyst precursor composition comprises a zero-valent nickel and at least one bidentate phosphite ligand; andwherein the bidentate phosphite ligand is selected from a member of the group represented by Formulas I and 11 as described herein.

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.

This invention relates generally to cyclic polypeptides comprising a thioether linkage and methods for their preparation. More particularly, this invention relates to halogenated polypeptides having at least one haloalanine-like amino acid, and methods for their preparation which involve converting the hydroxyl group (i.e., -OH) of a serine-like amino acid to a halo group (i.e., -X where X is Cl, Br, or I) with the aid of a phosphorus-based halogenation reagent such as a triphenylphosphine dihalide (i.e., (C6H5)3PX2, wherein X is Cl, Br, or I), a triphenylphosphite dihalide (i.e., (C6H5O)3PX2, wherein X is Cl, Br, or I), or a mixture of triphenylphosphine or triphenylphosphite with a halohydrocarbon (i.e., "halo-conversion"). This invention also relates to cyclic polypeptides having at least one polypeptide loop comprising a thioether linkage, and methods for their preparation which employ halogenated polypeptides and which involve intramolecular alkylation of the thiol group of a cysteine-like amino acid by the halo group of a haloalanine-like amino acid under suitable basic conditions to form a thioether linkage (i.e., "cyclization").

The invention relates to a modified cured rubber compound which comprises (i) the rubber components of natural rubber or synthetic rubber, (ii) methano donator, (iii) aralkyl substituted phenol resin as the methano acceptor, wherein the aralkyl substituted phenol (resorcin) methano donator resin can be prepared by reacting the substituted or non-substituted phenol compound, vinyl aromatic compound and aldehyde and / or ketone in the presence of organic metal phosphate or phosphite ester catalyst. The inventive methano acceptor has lower smoke degree than R-80 (resorcin-80). And in the tension strength and dynamic mechanical property test, the aralkyl substituted resorcin phenol resin has better performance than R-80 and resorcin-formaldehyde (RF) resin.

The invention provides a hydrocyanation process for the production of adiponitrile and other dinitriles having six carbon atoms, the process comprising:a) forming a reaction mixture in the presence of at least one Lewis acid, said reaction mixture comprising ethylenically unsaturated nitriles having five carbon atoms, hydrogen cyanide, and a catalyst precursor composition, by continuously feeding ethylenically unsaturated nitriles, hydrogen cyanide, and a catalyst precursor composition;b) controlling X and Z, wherein X is the overall feed molar ratio of 2-pentenenitriles to all unsaturated nitriles and Z is the overall feed molar ratio of hydrogen cyanide to all unsaturated nitriles, by selecting a value for X in the range from about 0.001 to about 0.5, and a value for Z in the range from about 0.5 / 1 to about 0.99 / 1, such that the value of quotient Q, whereinQ=X[(moles3PN+4PNinthefeed) / (molesallunsaturatednitrilesinthefeed)]-Zis in the range from about 0.2 to about 10, wherein 3PN is 3-pentenenitriles and 4PN is 4-pentenenitrile; andc) withdrawing a reaction product mixture comprising adiponitrile;wherein the ratio of the concentration of 2-pentenenitriles to the concentration of 3-pentenenitriles in the reaction mixture is from about 0.2 / 1 to about 10 / 1;wherein the catalyst precursor composition comprises a zero-valent nickel and at least one multidentate phosphorus-containing ligand;wherein the multidentate phosphorus-containing ligand is selected from the group consisting of a phosphite, a phosphonite, a phosphinite, a phosphine, and a mixed phosphorus-containing ligand or a combination of such members; andwherein the multidentate phosphorus-containing ligand gives acceptable results according to at least one protocol of the 2-Pentenenitrile Hydrocyanation Test Method.

A composition comprising polylactic acid and having excellent heat stability, especially moist heat stability, and a molded article thereof.The composition comprises 100 parts by weight of a resin component (component A) which is composed of 5 to 100 wt % of polylactic acid (component A-α) and 95 to 0 wt % of a thermoplastic resin (component A-β), 0.001 to 5 parts by weight of a phosphono-fatty acid ester (component B), 0.01 to 5 parts by weight of a phosphate metal salt (component C), 0.001 to 2 parts by weight of at least one antioxidant (component D) selected from the group consisting of a phosphite-based compound, a phosphonite-based compound, a hindered phenol-based compound and a thioether-based compound, and 0.001 to 10 parts by weight of an end-sealing agent (component E).

A lithium secondary battery comprising a positive electrode, a negative electrode, and a nonaqueous electrolyte, wherein the positive electrode or the negative electrode is an electrode obtained by depositing a thin film of active material capable of lithium storage and release on a current collector, the thin film is divided into columns by gaps formed therein in a manner to extend in its thickness direction and the columnar portions are adhered at their bottoms to the current collector, and the nonaqueous electrolyte contains at least one selected from phosphate ester, phosphite ester, borate ester and carboxylic ester having a fluoroalkyl group.

A polymeric composition, a process for producing the composition, and a process for using the composition in, for example, hydrocyanation or isomerization are disclosed. The composition comprises repeat units derived from (1) a carbonyl compound, a monomer, and phosphorochloridite; (2) phosphorus trichloride, a polyhydric alcohol, and an aromatic diol; or (3) combinations of (1) and (2) in which the monomer can be a polyhydric alcohol, an amine, combinations thereof. The composition can further comprise a Group VIII metal and optionally a Lewis acid. The composition can be produced by (1) contacting a carbonyl compound with the monomer to produce an intermediate and contacting the intermediate with phosphorochloridite; (2) contacting phosphorus trichloride with a second polyhydric alcohol under a condition sufficient to produce a phosphorus-containing polymer and contacting the phosphorus-containing polymer with an aromatic diol; or (3) contacting an N,N-dialkyl dichlorophosphoramidite with a second polyhydric alcohol to produce a polymer phosphoramidite, contacting the polymer phosphoramidite with an acid such as HCl to produce the phospphorus-containing polymer, which is then contacted with an aromatic diol. The composition can be used as catalyst, for example, for converting an unsaturated organic compound to a nitrile and isomerizing a nitrile.

The invention discloses a 3D printing weather-resistant nylon powder composite material and a preparation method thereof. The 3D printing weather-resistant nylon powder composite material is characterized by being prepared from the following components in percentage by mass: 97-99.4wt% of nylon, 0.1-0.5wt% of a hindered amine light stabilizer, 0.1-0.5wt% of an ultraviolet light absorber, 0.1-0.5wt% of a hindered phenol antioxidant, 0.2-1.0wt% of a phosphite ester antioxidant and 0.1-0.5wt% of other additives, wherein the other additives comprise one or combination of multiple components of a dispersing agent, a nucleating agent and a lubricant. With the combination of the hindered amine light stabilizer, the ultraviolet light absorber, the hindered phenol antioxidant and the phosphite ester antioxidant, the 3D printing weather-resistant nylon powder composite material prepared through spray-drying is excellent in weather resistance and small in mechanical property change before and after being modified, can be recycled and reused for multiple times, is narrow in spherical granule distribution, good in flowing property, free of layering or powder dropping, and moreover is high in preparation efficiency, small in energy consumption and simple and easy to process.

The whiteness and stability after processing of a polyolefin have been found to be improved upon the addition of a combination of at least one high activity phosphite and at least one hydrolytically stable phosphite.