Eugene S Barabas

45543127, Nov 19, 1985

Feb 11, 1985

6/699983

Eugene S. Barabas - Watchung NJ
James R. Cho - Oakland NJ

GAF Corporation - Wayne NJ

C08F12608
C08L 3906

524808

Vinylpyrrolidone is polymerized using free radical initiator consisting essentially of t-Butylperoxypivalate and preferably in solvent consisting essentially of water, isopropyl alcohol, sec. butyl alcohol or mixtures thereof.

39781631, Aug 31, 1976

Feb 12, 1975

5/549207

Eugene S. Barabas - Watchung NJ
Marvin M. Fein - Westfield NJ

GAF Corporation - New York NY

C08L 3102
C08L 2518

260885

There is disclosed a graph copolymer derived from a monomer mixture comprising A. a monomer having the formula ##EQU1## wherein R. sub. 2 is a substituted or unsubstituted hydrocarbon group and B. AN UNSATURATED ETHYLENIC MONOMER HAVING THE FORMULA ##EQU2## p WHEREIN X is an ester, aldehyde, ketone, halogen, ether, nitrile, isocyanate, sulfate and its salts, an N-containing heterocycle, or an aromatic hydrocarbon, graft polymerized on a poly (N-vinyl lactam) substrate, a stable aqueous emulsion containing same and a method of production therefor.

46845194, Aug 4, 1987

Apr 9, 1986

6/849918

Eugene S. Barabas - Watchung NJ

GAF Corporation - Wayne NJ

A61K 3179

424 80

The invention relates to the process for making a highly stable polyvinylpyrrolidone-halogen complex by forming a reaction solution in a diffusion zone containing a 3 to 9 percent aqueous solution of polyvinylpyrrolidone and halogen dissolved in an alcohol solution wherein the concentration of alcohol is not less than 40% of the total solutions and wherein a portion of the halogen requirement, up to 35%, may be in the form of hydrogen halide or a salt thereof; reacting the polypyrrolidone and halogen components and forming a water/alcohol azeotrope simultaneously with the corresponding polyvinylpyrrolidone-halogen complex; subjecting the reacted mixture to azeotropic distillation to remove an aqueous alcohol distillate; recycling the distillate to the halogen solubilizing or diffusion zone and subjecting the remaining liquid product solution, containing not more than about 35% solids, to spray drying to recover the polyvinylpyrrolidone/halogen product in the form of a particulate solid wherein each particle is of a uniform brownish yellow color throughout.

41699246, Oct 2, 1979

Jun 9, 1977

5/805001

Eugene S. Barabas - Watchung NJ
Andrew Klein - Somerville NJ

GAF Corporation - New York NY

C08F 832

525377

Linear cyclic polyimides are prepared by reacting a latex prepolymer with ammonia, an organic primary amine, hydroxylamine or a mixture thereof, at a temperature between 50. degree. C. and 300. degree. C. The prepolymer contains reactive functional groups, such as carboxyl, amide, alkyl ester and nitrile. The linear cyclic polyimides are thermoplastic materials.

41169131, Sep 26, 1978

Apr 26, 1977

5/790922

Eugene S. Barabas - Watchung NJ

GAF Corporation - New York NY

C08L 3500

260 296E

Thickener compositions comprising an emulsion copolymer of vinylacetate monomer and a monoester of an unsaturated dicarboxylic acid monomer, such as the monoester of maleic acid, and a water-miscible organic liquid, are described herein.

48534390, Aug 1, 1989

Oct 9, 1987

7/106845

Eugene S. Barabas - Watchung NJ

GAF Corporation - Wayne NJ

C08F 834

5253269

A novel, highly water soluble complex of a substantially insoluble organic compound and a solid homopolymer or copolymer of N-vinyl-2-pyrrolidone. The complex exhibits water solubilities in excess of about 25-fold that of the insoluble organic compound. A method for producing the complex is disclosed wherein the polymer and insoluble compound are dissolved in a mutual solvent, allowed to react for a period of time sufficient to form the complex, and then the solvent is removed to produce the dried highly water-soluble complex.

47132388, Dec 15, 1987

May 2, 1986

6/858635

Eugene S. Barabas - Watchung NJ

GAF Corporation - Wayne NJ

A61K 3138
C07D28528

424 80

The invention relates to the novel water soluble chlorothiazide in a complexed state which is derived from the reaction between and N-Vinyl actam polymer and chlorothiazide in alkaline media and to the process for the preparation of said complex.

44240791, Jan 3, 1984

Mar 31, 1982

6/364000

Eugene S. Barabas - Watchung NJ

GAF Corporation - New York NY

B08B 700

134 4

Rust is removed from metal surfaces by applying a coating of an aqueous solution of vinylpyrrolidone/maleic acid copolymer. The rust becomes incorporated into the coating during drying and the coating detaches itself from the metal surface for easy removal.