Gaf Corporation

Other

Eugene S Barabas

Andrew Klein

Dru W Alwani

James R Cho

Stanley J Gromelski

Prakash Mallya

Yehuda Ozari

Marvin M Fein

Stanley J Gromelski, Jr

David W Suwala

Prakish Mallya

Frederick Grosser

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.

Water-soluble complexes of water-insoluble organic compounds

The invention relates to a novel water soluble aminobenzoic acid in a complexed state which is derived from the reaction between a poly(N-vinyl-2-pyrrolidone)-halogen complex and an aminobenzoic acid and to the process for the preparation of said multicomplex.

Water soluble multicomplex of aminobenzoic acid

Water soluble multicomplex of a poly(N-vinyl-2-pyrrolidone)-halogen

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.

Water soluble complex of a poly (vinyl lactam) and chlorothiazide and

The invention relates to a novel water soluble .alpha.-methyl-(2-methylpropyl)benzene acetic acid in a complexed state which is derived from the reaction between an N-vinyl-2-pyrrolidone copolymer and the .alpha.-methyl-(2-methyl-propyl)benzene acetic acid and to the process for the preparation of said complex.

Water soluble complex of a poly(vinylpyrrolidone) copolymer and

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.

Method of preparing a polyvinylpyrrolidone-halogen complex of improved

The invention relates to the novel water soluble chlorothiazide-furosemide-poly(N-vinyl-2-pyrrolidone) complex which is derived from the reaction of these components in alkaline media and to the process for the preparation of said complex.

Water soluble multicomplex of chlorothiazide, furosemide and

The invention relates to a novel water soluble D-threo-(1,1'-dihydroxy-1-p-nitrophenylisopropyl) dichloroacetamide in a complexed state which is derived from the reaction between an N-vinyl-2-pyrrolidone copolymer and the D-threo-(1,1'-dihydroxy-1-p-nitrophenylisopropyl) dichloroacetamide and to the process for the preparation of said complex.

Process for copolymerization of vinylpyrrolidone and maleic anhydride in the presence of organic solvent, catalyst and between about 0.1 and 1.0 weight % water.

Process for making copolymers of vinylpyrrolidone and maleic anhydride

Particulate contaminant is removed from surfaces by applying a coating of an aqueous solution of copolymer of maleic acid and monomer. The particulate contaminant becomes incorporated into the coating during drying and the coating detaches itself from the surface without the necessity of peeling or otherwise mechanically removing the contaminant laden coating.

Surface cleaning process

Vinylpyrrolidone and vinyl acetate monomers are polymerized using free radical initiator consisting of t-Butylperoxypivalate and preferably in solvent consisting essentially of water, isopropyl alcohol, sec. butyl alcohol or mixtures thereof to produce vinyl pyrrolidone/vinyl acetate copolymer.

Method of preparing an aqueous solution comprising

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.

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Watchung, NJ, United States of America

Eugene S Barabas