Hoechst Celanese Corporation

Clariant Finance (bvi) Limited

John C Saukaitis

Frank B Gupton

Werner H Mueller

Varadaraj Elango

John R Fritch

Michael P Bodman

Donald R Larkin

M Dalil Rahman

James H Rea

Mohammad Khadim

Robert E Potvin

A process for producing a deionizing resin, which comprises reacting an organic compound having at least one reactive hydroxy group and at least one active chelating site with an organic polymer matrix having at least one reactive --OH or --NH.sub.2 group, and thereby producing a chelated.sub.-- polymer complex, as shown in FIG. II or FIG. IV: ##STR1## Washing the polymer complex with water, followed by washing with a mineral acid solution and then again washing with water and thereby reducing the level of sodium, iron and chromium ions in the polymer complex to less than 100 ppb each.

Chelated polyhydroxstyrene for removing metal ions from aqueous and

7,8-difluoro-2,3-dihydro-3-methyl-4H-1,4-benzoxazine.

7,8-difluoro-2,3-dihydro-3-methyl-4H-1,4-benzoxazine

The present invention pertains to a method of preparing substituted and unsubstituted N-hydroxy-2-aminobutane diacid derivatives which can be dehydrated to 2-aminobut-2-ene dioic acid derivatives, which can be subsequently converted to pyridine and quinoline derivatives.

Process for preparing pyridine and quinoline derivatives

A method of preparing 7,8-difluoro-2,3-dihydro-3-methyl-4H-1,4 benzoxazine. The method includes the steps of reacting 2,3,4-trifluoroaniline or trifluoronitrobenzene with hydroxyacetone or a derivative thereof under reducing conditions to yield N-(3-hydroxy-2-propyl)-2,3,4 trifluoroaniline. The N-(3-hydroxy-2-propyl)-2,3,4-trifluoroaniline is treated with a base to yield the above-mentioned benzoxazine.

Method of preparing 7,8-difluoro-2,3-dihydro-3-methyl-4H-1, 4-benzoxazine

This invention relates to a compound of the formula: ##STR1##

8-sulfo-3-quinoline carboxylic acid compounds

This invention is a process for preparing 8-sulfo-7-chloro-6-fluoro-4-oxo-1,4-dihydro-3-quinolinic acid wherein the amino analinomethylenomalonate starting material of Formula 1 is unsubstituted at the R.sub.1 and R.sub.2 positions i.e. these moieties are hydrogen. In the ring closing process when R.sub.1 and R.sub.2 are hydrogen, not only does the ring close but the ring position at R.sub.2 is sulfonated.

8-sulfo-3-quinoline carboxylic acids and process therefore

A method of preparing substituted and unsubstituted 1,4-dihydro-4-oxo-2 and -3 quinolinic carboxylic acids which comprises heating an ester selected from the group consisting of substituted and unsubstituted anilinomethylenemalonates, anilinofumurates, anilinomaleates and mixutres thereof in the presence of chlorosulfonic acid, oleum and mixtures thereof.

Method for preparing quinoline carboxylic acids and derivatives thereof

The present invention pertains to a method of preparing substituted and unsubstituted N-hydroxy-2-aminobutane diacid derivatives. The invention also pertains to the use of N-hydroxy-2-aminoethane derivatives (including the N-hydroxy-2-aminobutane diacid derivatives) in the preparation of pyridine derivatives.

Process for preparing pyridinecarboxylic acid derivatives

In one embodiment this invention provides a process for converting a pyridine-2,3-dicarboxylic acid diester to the corresponding cyclic anhydride directly, without any recovery and purification of the pyridine-2,3-dicarboxylic acid intermediate. An important aspect of the invention process is the utility of pure pyridine-2,3-dicarboxylic acid diester starting matter. A procedure for providing pure diester starting material is demonstrated.

Conversion of pyridine-2,3-dicarboxylic acid esters to cyclic anhydrides

A novel method is disclosed for the preparation of 2,3-pyridine-dicarboxylates by the reaction of a ketoester such as dimethyl oxalacetate with an .alpha.,.beta.-unsaturated aldehyde or ketone such as 2-ethylacrolein and at least 1 molar equivalent of ammonium salt in suitable solvent.

Process for preparing pyridine carboxylic acid esters

Resin compositions, soluble in odorless mineral spirits, autooxidizable and air-dryable after application to textiles, leather, wood or other surfaces to form soil, oil and water-repellent coatings. The resin compositions are terpolymers comprising a fluoroaliphatic vinyl monomer, a hydroarbyl higher alkyl vinyl monomer and an acrylic or methacrylic ester of a compound having one or more unsaturated olefinic bonds, which latter ester imparts autoxidizability to the compositions.

Autoxidizable fluorocarbon polymer compositions and methods

Resin compositions, soluble in odorless mineral spirits, and dryable at room temperature after application to textiles, leather, wood or other surfaces to form soil-oil and water-repellent coatings. The resin compositions are terpolymers comprising a fluoroaliphatic vinyl monomer, a hydrocarbyl higher alkyl vinyl monomer and a polyfunctional vinyl monomer selected from the group consisting of (a) a vinyl amido glycolate ether monomer; (b) a monomeric vinyl diketo ester monomer and (c) a vinyl ester monomer containing hydroxy and halide groups.

Growing community of inventors

East Greenwich, RI, United States of America

John C Saukaitis