Abstract: Processes that use novel reagents for the removal of colored impurity during the preparation of Salcaprozic Acid and pharmaceutically acceptable salts thereof. The processes include hydrolysis of 8-(2,4-dioxo-1,3-benzoxazin-3-yl)octanoic acid ethyl ester in the presence of or by contacting it with benzotriazole, hydrazine and/or sodium borohydride.

Abstract: A method of removing trace levels of arsenic-containing impurities from raw triethylphosphate (TEPO) is disclosed. The method uses adsorption, or adsorption followed by a flash distillation. The method comprises contacting raw triethylphosphate (TEPO) with an adsorbent which selectively adsorbs the arsenic-containing impurities in the raw triethylphosphate (TEPO). The adsorbent is a base promoted alumina containing adsorbent represented by a formula: ZxWy; where x is the weight percentage of Z in the adsorbent ranging from 30% to 99.999%; y is the weight percentage of W in the adsorbent, and x+y=100%; Z is selected from the group consisting of alumina (Al2O3), magnesium-alumina based layered double hydroxide (MgO—Al2O3), alumina-zeolite, and mixtures thereof; and W is selected from the group consisting of at least one basic metal oxide, at least one basic metal carbonate, and mixtures thereof.

Abstract: A phosphorus-containing compound is treated with at least one metal compound prior to fractional distillation to collect a purified fraction containing about 20 ppb or less arsenic. The purified phosphorus-containing compounds are useful for preparing electronic materials for electronic semiconductor manufacturing. Suitable metal compounds include salts, oxides and/or sulfides of iron, copper, nickel, cobalt, or zinc.

Abstract: A method for decolorizing and stabilizing alkylphenyl esters of phosphoric acid which comprises contacting the esters with an effective amount of a benzofuranone (e.g., is 5,7-di-t-butyl-3-(3,4 di-methylphenyl)3H-benzofuran-2-one) for a sufficient length of time to decolorize and stabilize the esters against subsequent color formation.

Abstract: A novel process is described for preparing phosphonites or phosphinites by reacting a product of a Friedel-Crafts reaction with alcohols or phenols and separating off the byproducts formed. The novelty is the aftertreatment with a protic compound, or with an oxide, hydroxide, (hydrogen)carbonate resp. (hydrogen)phosphate of a metal or with a nitrogen containing compound (as defined in claim 1), or with any combination of one or more substances of the above mentioned compound classes. Products having a low halide and aluminum content are obtained which are distinguished by an improved clear solubility and an improved action as stabilizer for polymeric materials.

Abstract: Non-aqueous functional fluids are treated to avoid degradation or to recondition degraded fluids by a process which comprises contacting the fluid with an anionic ion-exchange resin and subsequently removing water by vacuum dehydration. The fluids can be restored and maintained at a water content of less than 0.1% w/w and an acid number of less than 0.2 mgKOH/gm. The fluid is preferably a triaryl phosphate based fluid. Treated fluids may exhibit improved properties especially increased resistivity.

Abstract: A process for the recovery by distillation of tributyl phosphate (TBPO) from spent hydraulic oils, which are employed particularly in aircraft used for civilian air traffic.

Abstract: A process for preparing pure L-alpha-Glycerylphosphoryl-D-Myoinositol and its salts consists of a) preparing the crude Na+ or K+ salt of L-.alpha.-Glycerylphosphoryl-D-Myoinositol, passing an aqueous solution of the salt through an acid resin in H form whereby ion exchange occurs and the acid L-.alpha.-Glycerylphosphoryl-D-Myoinositol is eluted by washing the resin with water. Then the aqueous solution is passed through a basic resin whereby the L-.alpha.-Glycerylphosphoryl-D-Myoinositol is adsorbed on the resin as the anion. The resin is eluted first with a dilute solution of formic, acetic or propionic acid and then eluted with a more concentrated solution of the same acid. The preparation of severals salts is also described.

Abstract: A process for recovering a trialkyl phosphate ester from a phosphate ester-based functional fluid by treating the fluid with an alkoxide salt, and thereafter, distilling the fluid to recover the trialkyl phosphate ester essentially free of aryl-containing phosphate esters and epoxide-containing hydrolysis inhibitors initially present in the fluid.

Abstract: Process for fractionating phosphatide mixtures into two or more fractions which are enriched in one or more of phosphatidyl choline (PC), phosphatidyl ethanolamine (PE), phosphatidyl inositol (PI) and phosphatidic acid (PA) by carrying out extraction steps using alcoholic solvent in which the solubilities of PC, PE and PA are controlled by suitably adjusting the acidity of the solvent, the pH being adjusted to above 8 for solubilizing PC and PE and to below 5 for solubilizing PA. PI is substantially insoluble in the solvent used in the process and thus is mainly recovered in the extraction residue. Further parameters influencing the solubility of the components of the phosphatide mixtures to be fractionated are water content of the alcoholic solvent, temperature and choice of bases and acids for adjusting the pH. For further separating fractions rich in PC and PE di- or trivalent metal salt solutions are used.

Abstract: Organophosphorus compounds are stabilized against decomposition during and after recovery from their synthesis reaction mixtures by the addition to the synthesis reaction mixture of at least 0.5% by weight of an acid scavenger, based on the weight of the organophosphorus compound, before allowing the organophosphorus compound to crystallize. The invention is of particular value in the stabilization of 2,2'-alkylidenebis(dialkylphenyl)fluorophosphonites, such as 2,2'-ethylidenebis(4,6-di-t-butylphenyl)fluorophosphite, which is rendered more suitable for use as a stabilizer for organic polymers, e.g., polycarbonates, by the practice of the invention.

Abstract: An alkali metal monoalkylphosphate having a saturated or unsaturated straight-chain or branched hydrocarbon group having from 8 to 32 carbon atoms is described; also described is a process for preparing particles of said alkali metal zinc monoalkylphosphate and cosmetics containing said particles.

Abstract: Cations and anions contained as impurities in a spent organic solvent can be removed by an alkaline aqueous solution passing through inside of hydrophobic porous membrane such as hollow fibers for capturing anions and by an acidic aqueous solution passing through inside of hydrophobic porous membrane such as hollow fibers for capturing cations at the same time so as to regenerate the organic solvent. An apparatus suitable for removing cations and anions simultaneously from the spent organic solvent is also provided.

Abstract: A process is provided for making halogen-substituted triaryl phosphate esters which are normally solid under ambient conditions. The process comprises reacting a halogenated phenol with phosphorus oxychloride in the presence of a magnesium chloride catalyst above the melting point of the desired product. After the reaction is complete the product is recovered by adding an alcohol, such as, pentanol, 2-ethyl hexanol or hexanol and cooling the resulting mixture below the melting point of the product.

Abstract: In the production of monoalkylphosphoric acid esters, at least one fatty alcohol or mixtures of fatty alcohols containing from 8 to 18 carbon atoms and preferably from 12 to 14 carbon atoms in a straight chain is/are reacted with a 0.2 to 2 molar excess of polyphosphoric acid at a temperature of 60.degree. to 130.degree. C.; following an after-reaction time of 120 to 300 minutes at a temperature of 95.degree. to 105.degree. C., the product of this reaction is slowly hydrolyzed at 90.degree. to 100.degree. C. with 0.5 to 1.0 mole water, based on the quantity of phosphorus atoms in the reaction mixture, the hydrolysis product is neutralized to a level of from 40 to 65% and preferably to a level of from 50 to 60%, based onthe acid number, with dilute alkali metal hydroxide, and the two phases formed are separated from one another after a residence time of 30 to 180 minutes at a temperature in the range of from 50.degree. to 95.degree. C.

Abstract: Process for the purification of phosphoric acid partial ester mixtures in which, after the addition of a basic, non-volatile inorganic or organic compound, the unreacted fatty alcohol is directly removed from the partial ester mixture by distillation.

Abstract: A process for purifying tertiary organophosphites by removing secondary organophosphites therefrom.

Abstract: A method for reducing the acidity and moisture content of used organophosphate functional fluids. The used functional fluid is contacted with a solid composite adsorbent and then separated from the adsorbent. The composite adsorbent is preferably a powder having an average particle size of about 20-500 microns and total pore volume of at least about 0.40 cm.sup.3 /g and it comprises about 40-90 wt % alumina and about 10-60 wt % Y zeolite wherein the molar ratio of SiO.sub.2 to Al.sub.2 O.sub.3 is about 4.5-6.0. The adsorbent is produced by agglomerating particles of activated alumina and Y zeolite into a composite agglomerate, aging the agglomerate, activating at an elevated temperature, and then comminuting to form a powder.

Abstract: A method for removing acidic contaminants from neutral mono and bifunctional organophosphorous extractants by contacting the extractant with a macroporous cation exchange resin in the H.sup.+ state followed by contact with a macroporous anion exchange resin in the OH.sup.- state, whereupon the resins take up the acidic contaminants from the extractant, purifying the extractant and improving its extraction capability.

Abstract: A phosphoric ester salt of high purity is produced by converting a phosphoric ester in a mixture containing the phosphoric ester and one or more nonionic compounds into a phosphoric ester salt by using a basic compound, and extracting nonionic compounds from the above mixture by using a mixed solvent of aliphatic hydrocarbons or cycloaliphatic hydrocarbons, a lower alcohol and water.The above method is applicable to a non-crystalline phosphoric ester from which nonionic compounds cannot be removed by recystallization.The above obtained phosphoric ester salt of high purity can be used as it is or after condensation.