JEFFREY A COHEN
Chiropractic in Fair Lawn, NJ

6451944, Sep 17, 2002

May 18, 2001

09/861044

Russell Biss - Wayne NJ
Jeffrey Cohen - Fair Lawn NJ
John Zamora - Paramus NJ
Krystyna Plochocka - Scotch Plains NJ
Jeffrey A. Lynn - West Milford NJ

ISP Investments Inc. - Wilmington DE

C08F 3402

526271, 526 68

A continuous, solvent-free process for obtaining solvent-free, fine white powders of high molecular weight alternating copolymers of maleic anhydride and a C -C alkyl vinyl ether, without odor or taste, having the molecular structure (A—B) , where A is maleic anhydride, B is an alkyl vinyl ether and n is an integer indicative of the molecular weight of the copolymer, which comprises feeding alkyl vinyl ether as reactant and solvent in excess over the desired 1:1 mole ratio of A:B in the copolymer, molten maleic anhydride and a free radical initiator, continuously at predetermined feeding rates into a reactor heated at a reaction temperature of about 50° to 100° C. , charging the reactor and withdrawing reaction product, residual alkyl vinyl ether and initiator from the reactor at the same rate as the feed rate of reactants into the reactor simultaneously thereby maintaining a constant volume in the reactor, stripping residual alkyl vinyl ether from the reaction product, drying the copolymer obtained of any remaining traces of alkyl vinyl ether, and recycling recovered alkyl vinyl ether back into reactor as reactant and solvent.

6365691, Apr 2, 2002

Jul 6, 2000

09/611088

Russell Biss - Wayne NJ
Jeffrey Cohen - Fair Lawn NJ
John Zamora - Paramus NJ
Krystyna Plochocka - Scotch Plains NJ
Jeffrey A. Lynn - West Milford NJ

ISP Investments Inc. - Wilmington DE

C08F22204

526272, 526266, 526269, 526270, 526271, 526332, 5263487

A continuous, solvent-free process for obtaining solvent-free, fine white powders of high molecular weight alternating terpolymers of maleic anhydride, a C -C alkyl vinyl ether and isobutylene, without odor or taste.

5723524, Mar 3, 1998

Nov 6, 1996

8/743696

Jeffrey M. Cohen - Fairlawn NJ
Philip F. Wolf - Bridgewater NJ
William D. Young - Bloomingdale NJ

ISP Investments Inc. - Wilmington DE

C07C 720, C03K 504

524376

A composition for preventing or retarding the formation of gas hydrates or for reducing the tendency of gas hydrates to agglomerate, during the transport of a fluid comprising water and a hydrocarbon, through a conduit, comprising, (a) a polymer or copolymer selected from a terpolymer of vinyl pyrrolidone, vinyl caprolactam and an ammonium derivative monomer having from 6 to 12 carbon atoms, selected from the group consisting of dialkyl aminoalkyl methacrylamide, dialkyl dialkenyl ammonium halide and a dialkylamino alkyl acrylate or methacrylate, a copolymer of vinyl pyrrolidone and vinyl caprolactam, and a homopolymer of vinyl caprolactam, and (b) a low molecular weight glycol ether containing an alkoxy group having at least 3 carbon atoms.

6093863, Jul 25, 2000

Dec 1, 1999

9/452557

Jeffrey M. Cohen - Fairlawn NJ
William D. Young - Cedar Grove NJ

ISP Investments Inc. - Wilmington DE

C07C 900, C07C 720, B01D 4700

585 15

A composition for preventing or retarding the formation of gas hydrates or for reducing the tendency of gas hydrates to agglomerate, during the transport of a fluid comprising water and a hydrocarbon, through a conduit, comprising, (a) a polymer or copolymer selected from a terpolymer of vinyl pyrrolidone, vinyl caprolactam and an ammonium derivative monomer having from 6 to 12 carbon atoms, selected from the group consisting of dialkyl aminoalkyl methacrylamide, dialkyl dialkenyl ammonium halide and a dialkylamino alkyl acrylate or methacrylate, a copolymer of vinyl pyrrolidone and vinyl caprolactam, and a homopolymer of vinyl caprolactam, and (b) an alcohol containing three to five carbon atoms and one hydroxy group.

6096815, Aug 1, 2000

Oct 7, 1998

9/168981

Jeffrey M. Cohen - Fairlawn NJ
William D. Young - Cedar Grove NJ

ISP Investments Inc. - Wilmington DE

C08J 506, C08K 505

524379

A composition for preventing or retarding the formation of gas hydrates or for reducing the tendency of gas hydrates to agglomerate, during the transport of a fluid comprising water and a hydrocarbon, through a conduit, comprising, (a) a polymer or copolymer selected from a terpolymer of vinyl pyrrolidone, vinyl caprolactam and an ammonium derivative monomer having from 6 to 12 carbon atoms, selected from the group consisting of dialkyl aminoalkyl methacrylamide, dialkyl dialkenyl ammonium halide and a dialkylamino alkyl acrylate or methacrylate, a copolymer of vinyl pyrrolidone and vinyl caprolactam, and a homopolymer of vinyl caprolactam, and (b) an alcohol containing three to five carbon atoms and one hydroxy group.