Gerald J Abruscato

US Patent:

6344560, Feb 5, 2002

Filed:

May 3, 2000

Appl. No.:

09/564221

Inventors:

Brendan J. Geelan - East Haven CT
Brigitte Benage - Wolcott CT
Gerald J. Abruscato - Southington CT
Kirk A. Schlup - Woodbury CT
Ruben S. Grewal - Oakville CT
Andrew J. Eisenstein - Southbury CT

Assignee:

Uniroyal Chemical Company, Inc. - Middlebury CT

International Classification:

C07F 906

US Classification:

546 21, 546 22, 546242, 540485, 540487, 548412, 548413, 548542, 568927

Abstract:

A nitroaromatic compound is used to enhance the solubility of a nitroxyl compound in an aromatic hydrocarbon solvent.

US Patent:

6653414, Nov 25, 2003

Filed:

Jul 30, 2001

Appl. No.:

09/916580

Inventors:

Brigitte Benage - Wolcott CT
Brendan J. Geelan - East Haven CT
Gerald J. Abruscato - Southington CT
Leo Bonnell - Hellertown PA

Assignee:

Uniroyal Chemical Company, Inc. - Middlebury CT

International Classification:

C08F 238

US Classification:

526 83, 585 5, 546216, 546223, 560205, 564297

Abstract:

Disclosed herein is a method for inhibiting the premature polymerization of ethylenically unsaturated monomers comprising adding to said monomers an effective amount of a mixture comprising: A) at least one stable hindered nitroxyl compound having the structural formula: wherein R and R are independently selected from the group consisting of hydrogen, alkyl, and heteroatom-substituted alkyl and R and R are independently selected from the group consisting of alkyl and heteroatom-substituted alkyl; and X and X (1) are independently selected from the group consisting of halogen, cyano, COOR , âSâCOR , âOCOR , (wherein R is alkyl or aryl), amido, âSâC H , carbonyl, alkenyl, or alkyl of 1 to 15 carbon atoms, or (2) taken together, form a ring structure with the nitrogen; and B) at least one inhibitor selected from the group consisting of ortho-quinone, ortho-hydroquinone, para-quinone, para-hydroquinone, and derivatives of the foregoing.

US Patent:

6660181, Dec 9, 2003

Filed:

Jul 12, 2002

Appl. No.:

10/193603

Inventors:

Brigitte Benage - Wolcott CT
Angela M. Edwards - Naugatuck CT
Vilen Kosover - Cheshire CT
Gan Wang - Wallingford CT
Anthony Gentile - Waterbury CT
Jesus R. Fabian - Wethersfield CT
Gerald J. Abruscato - Southington CT

Assignee:

Crompton Corporation - Middlebury CT

International Classification:

C09K 300

US Classification:

25218312, 252401, 585 4, 585 5, 585832

Abstract:

A method is disclosed for inhibiting the premature polymerization of ethylenically unsaturated monomers comprising adding to said monomers a polymerization inhibiting amount of a mixture comprising A) a first inhibitor comprising 4-amino-2,2,6,6-tetramethylpiperidinyloxy, wherein said amino group is a primary, secondary, or tertiary amino group; and B) at least one other inhibitor having the structural formula: wherein: R and R are independently selected from the group consisting of hydrogen, alkyl, and heteroatom-substituted alkyl; R and R are independently selected from the group consisting of alkyl and heteroatom-substituted alkyl; X and X (1) are independently selected alkyl groups of 1 to 15 carbon atoms or (2) taken together, form a ring structure with the nitrogen.

US Patent:

6685823, Feb 3, 2004

Filed:

Jan 16, 2002

Appl. No.:

10/030991

Inventors:

Brigitte Benage - Wolcott CT
Gerald J. Abruscato - Southington CT
Andrew J. Eisenstein - Southbury CT

Assignee:

Uniroyal Chemical Company, Inc. - Middlebury CT

International Classification:

C07C 720

US Classification:

208 48AA, 585950, 203 8

Abstract:

Disclosed herein is a method for inhibiting the premature polymerization of ethylenically unsaturated monomers comprising adding to said monomers an effective amount of at least one inhibitor selected from the group consisting of C-nitrosoaniline and quinone imine oxime compounds. Also disclosed is a composition of matter comprising: A) an ethylenically unsaturated monomer and B) an effective inhibiting amount, sufficient to prevent premature polymerization during distillation or purification of said ethylenically unsaturated monomer, of at least one inhibitor selected from the group consisting of C-nitrosoaniline and quinone imine oxime compounds used together with an effective amount of oxygen or air to enhance the inhibiting activity of said inhibitor.

US Patent:

6899806, May 31, 2005

Filed:

Nov 10, 2003

Appl. No.:

10/703592

Inventors:

Brigitte Benage - Wolcott CT, US
Gerald J. Abruscato - Southington CT, US
Andrew J. Eisenstein - Southbury CT, US

Assignee:

Uniroyal Chemical Company, Inc. - Middlebury CT

International Classification:

C07C007/20
C09K015/16

US Classification:

208 48AA, 585950, 203 8, 252401, 252405, 252407

Abstract:

Disclosed herein is a method for inhibiting the premature polymerization of ethylenically unsaturated monomers comprising adding to said monomers an effective amount of:A) at least one first inhibitor selected from the group consisting of C-nitrosoaniline compounds; andB) at least one second inhibitor selected from the group consisting of quinone alkides, nitroaromatic compounds, hydroxylamine compounds, phenylenediamine compounds, quinone compounds, and hydroquinone compounds. Also disclosed is a composition of matter comprising:A) at least one member selected from the group consisting of C-nitrosoaniline compounds; andB) at least one member selected from the group consisting of quinone alkides, nitroaromatic compounds, hydroxylamine compounds, phenylenediamine compounds, quinone compounds, and hydroquinone compounds.

US Patent:

6902663, Jun 7, 2005

Filed:

Nov 10, 2003

Appl. No.:

10/703580

Inventors:

Brigitte Benage - Wolcott CT, US
Gerald J. Abruscato - Southington CT, US
Andrew J. Eisenstein - Southbury CT, US

Assignee:

Uniroyal Chemical Company, Inc. - Middlebury CT

International Classification:

C07C007/20
C09K015/16

US Classification:

208 48AA, 585950, 203 8, 252401, 252405, 252407

Abstract:

Disclosed herein is a method for inhibiting the premature polymerization of ethylenically unsaturated monomers comprising adding to said monomers an effective amount of at least one inhibitor selected from the group consisting of C-nitrosoaniline and quinone imine oxime compounds. Also disclosed is a composition of matter comprising:.

US Patent:

7022220, Apr 4, 2006

Filed:

Nov 10, 2003

Appl. No.:

10/703581

Inventors:

Brigitte Benage - Wolcott CT, US
Gerald J. Abruscato - Southington CT, US
Andrew J. Eisenstein - Southbury CT, US

Assignee:

Uniroyal Chemical Company, Inc. - Middlebury CT

International Classification:

C07C 7/20
C07B 63/04
C09K 15/00

US Classification:

208 48AA, 585950, 203 8, 252401, 252405, 252407

Abstract:

Disclosed herein is a method for inhibiting the premature polymerization of ethylenically unsaturated monomers comprising adding to said monomers an effective amount of at least one inhibitor selected from the group consisting of C-nitrosoaniline and quinone imine oxime compounds. Also disclosed is a composition of matter comprising:.

US Patent:

7691952, Apr 6, 2010

Filed:

Jun 29, 2005

Appl. No.:

11/172168

Inventors:

Vilan Kosover - Cheshire CT, US
Jesus A. Fabian - Wethersfield CT, US
Istvan Lippai - Naugatuck CT, US
Brigitte Benage - Wolcott CT, US
Gerald J. Abruscato - Southington CT, US

Assignee:

Chemtura Corporation - Middlebury CT

International Classification:

C08F 2/38
C08K 3/00

US Classification:

526 82, 526 83, 526 84, 25218229

Abstract:

Disclosed herein is a method for inhibiting and retarding the premature polymerization and the polymer growth of ethylenically unsaturated monomers comprising adding to said monomers an effective amount of at least one inhibitor that is a sulfonated nitrophenol of the formula:R, R, and Rare independently selected from the group consisting of hydrogen, alkyl, NO, and SOH, provided that at least one of R, R, and Ris NOand at least one of R, R, and Ris SOH. In a preferred embodiment, at least one additional inhibitor selected from the group consisting of nitroxyl compounds, nitrosoanilines, nitrophenols, amines, and mixtures thereof is also added.