159 results about "Antimony compounds" patented technology

This invention provides a novel polymerization catalyst other than antimony compounds, polyester produced by using the same and a process for producing polyester. The polycondensation catalyst of this invention is a polyester polymerization catalyst comprising an aluminum compound and a phosphorus compound having a specific structure. Further, this invention relates to polyester produced by using this polyester polymerization catalyst and a process for producing polyester. Further, this invention relates to fibers, films and hollow molded articles comprising the polyester.

Titanium oxide containing borosilicate glasses, which have been produced without the use of arsenic and antimony compounds, are provided. An environmentally friendly refining method for providing titanium oxide containing borosilicate glass is also provided. The method includes using oxygen containing selenium compounds as refining agents to provide glasses with good transmittance values in the infrared range and show no disturbing discolorations. The glasses of the present disclosure are particularly suitable for the production of IR light conductors, cover glasses for photo sensors, and UV filters.

An epoxy resin composition contains (A) an epoxy resin having an epoxy equivalent of at least 185 and possessing a skeleton having a structure in which two benzene rings are conjugable to each other directly or via an aliphatic unsaturated double bond, carbon atoms having an atomic orbital of SP2 type accounting for at least 50% of the carbon number, (B) a phenolic resin having a hydroxyl equivalent of at least 160, carbon atoms having an atomic orbital of Sp2 type accounting for at least 85% of the carbon number, (C) a polyimide resin in an amount of 1-20 parts by weight per 100 parts by weight of components (A) and (B) combined, and (D) 70-85% by volume of the entire composition of an inorganic filler. The composition cures into products having flame retardancy and high-temperature reliability even though it is free of bromine compounds and antimony compounds.

A flame-retardant metal-coated cloth having a high degree of flame retardancy and a soft feeling without the use of any halogen compound or antimony compound is provided. In the flame-retardant metal-coated cloth, a flame-retardant film comprising a mixture (E) of a phosphorus compound (A), a metal hydroxide (B), a phosphoric ester (C), and a thermoplastic resin (D), is formed on at least one surface of a metal-coated cloth, and the ratio of (A):(B):(C):(D) is 20 to 200:100 to 950:10 to 250:100 in terms of a weight ratio.

The present invention discloses a new type of organic antimony compound bearing a nitrogen-bridged ligand. The structural formula of the ligand is [PhCH2]N[R][CH2Ph], wherein R is a substituent on nitrogen atom; group X that directly links antimony is an anion with strong charge pulling ability; and in this antimony compound, Sb<3+> not only forms bonds with the two carbon atoms of the ligand but also forms a coordinate bond with the nitrogen atom of the ligand and an ionic bond with the corresponding anion. The present invention also provides the preparation method of this organic antimony compound, as well as its application in organic synthesis as a catalyst.

The invention discloses a preparation method and an application of an Sb-doped Cs2AInCl6 double perovskite material. In the Sb-doped Cs2AInCl6 double perovskite material, A is Na, K and Rb, a cesium-containing compound, an A-containing compound, an antimony-containing compound and an indium-containing compound are used as reaction reagents, concentrated HCl is used as a solvent, the Sb-doped Cs2AInCl6 double-perovskite material is prepared, and the influence of the reaction temperature on the luminous efficiency of the Cs2AInCl6 double-perovskite material is explored. The Sb-doped Cs2AInCl6 double-perovskite material prepared by adopting a solvothermal method is good in crystallinity, high in quality, and capable of being rapidly synthesized in quantity and simple in process; and doping ofdifferent concentrations can be effectively realized by adjusting the feeding ratio of Sb. The material provided by the invention has good stability and high quantum efficiency (PLQY), is suitable for industrial production, and has a wide application prospect in the fields of illumination, backlight batteries, display screens, solar cells and the like.

Substrates, which may be either flexible or rigid, are coated with a flame retardant composition containing an organic polymer, a filler and a zeolite. Good flame retardant properties are obtained even where the composition contains low levels of conventional flame retardant additives such as antimony compounds, brominated compounds and zinc compounds. The flame retardant composition may also be used to adhere different substrates together.

The invention belongs to the technical field of polymer modification, and provides a flame-retardant PBT/PET (polybutylece terephthalate/polyethylene terephthalate) alloy, a preparation method and application thereof. The flame-retardant PBT/PET alloy is prepared from the following components in parts by weight: 30 to 50% of PBT resin, 5 to 15% of PET resin, 15 to 20% of brominated flame retardant, 0.5 to 2% of antimony compound, 4 to 10% of kaolin, and 20 to 40% of reinforcing material, wherein the synergistic agent is a compound synergistic agent; the compound synergistic agent consists of the antinomy compound and the kaolin; the sum of the percentages of the components by weight is 100%. Compared with the traditional art, the preparation method of the flame-retardant PBT/PET alloy hasthe advantages that the V-0 flame-retardant grade of UL-94 and the IEC 60335 safety standard can be simultaneously reached, the loss of mechanical property is very small, the adding amount of the antinomy compound is very low, and the material cost is lower.

A method of manufacturing a glazing panel having a solar factor (FS) of less than 70% and being composed of a vitreous substrate and a tin/antimony oxide coating layer provided on the vitreous substrate and having a Sb/Sn molar ratio ranging from 0.01 to 0.5, preferable 0.03 to 0.5, the method including the steps of providing reactants in gaseous phase which comprise tin and antimony compounds, which are present in an amount effective to form the tin/antimony oxide coating layer; and forming the tin/antimony oxide coating layer pyrolytically on the vitreous substrate from the reactants in gaseous phase to provide the glazing panel having a solar factor (FS) of less than 70%.

The present invention relates to a process for preparation of polyester resin in the presence of a novel catalyst system comprising an antimony compound and inorganic tin compound. The present invention also relates to a catalyst system for the preparation of polyester comprising an antimony compound and inorganic tin compound which reduces the polymerization time at all stages of polyester synthesis and reduces the generation of degradation product. This invention further relates to polyester resin with improved L color having significant importance in end-use applications.

The present invention comprises a method for preparing a mixed oxide catalyst for use in producing acrylonitrile or methacrylonitrile from propane or isobutane by ammoxidation in a gaseous phase via methods of contacting any one of the antimony compound, the molybdenum compound, and the vanadium compound with hydrogen peroxide prior to combining with source compounds for the remaining elements in the catalyst.

A process for removing Ni from the used etching Ni-containing FeCl3 solution includes adding iron powder or fraky iron scales, reduction reaction, heating to 55-95 deg.C, adding iron powder and sulfur powder, precipitating 2-valence Ni, adding iron powder and sulfur or As compound or Sb compound for further precipitation, and filtering. Its advantages are high effect on recovering Ni and regenerating FeCl3 solution and low cost.

The object of the present invention is to provide an epoxy resin composition for semiconductor encapsulation which is excellent in flowability, adhesion to substrates, flame retardancy and solder crack resistance without using bromine-containing organic compounds and antimony compounds. According to the present invention, there is provided an epoxy resin composition for semiconductor encapsulation characterized by including, as essential components, a phenolic aralkyl type epoxy resin having a biphenyl structure, a phenolic aralkyl resin having a biphenyl structure, a curing accelerator, an inorganic filler, a specific silane coupling agent having a secondary amine, and a specific silane coupling agent having a mercapto group.