1824 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.

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.

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.

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.

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.

The present invention relates to a method of purifying organic diphosphite compounds.

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, wherein

is in the range from about 0.2 to about 10, wherein 3PN is 3-pentenenitriles and 4PN is 4-pentenenitrile; and

• • c) 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; and
  • wherein the multidentate phosphorus-containing ligand gives acceptable results according to at least one protocol of the 2-Pentenenitrile Hydrocyanation Test Method.