Patents by Inventor Glen T. Cunkle
Glen T. Cunkle has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20110250253Abstract: Highly active, leach-resistant, antimicrobial nonwoven textiles are prepared by treating at least one surface of the nonwoven material with an anionic polyelectrolyte, such as carboxymethyl cellulose, alginic acid, poly(acrylic acid) etc and at least one select quaternary ammonium antimicrobial agent. The textiles of the invention, and products produced from them, exhibit a highly effective quick kill rate, for example a log 4 CFU reduction within a 5 minute contact time, against microbes such as fungi and gram (?) and gram (+) bacteria.Type: ApplicationFiled: April 8, 2011Publication date: October 13, 2011Inventors: Glen T. Cunkle, Carmen Hendricks-Guy, Ted Deisenroth
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Patent number: 7776182Abstract: Selected chlorohydrin and cationic compounds containing nitroxide or hydroxylamine moieties are effective in stabilizing pulp or paper, especially pulp or paper containing lignin, against yellowing and discoloration due to the adverse effects of light. These compounds are added at various points in the paper-making process, especially at the wet ends, making the need for water soluble or water dispersible materials having high affinity for pulp or paper essential. This performance is often further enhanced by the presence of one or more coadditives selected from the group consisting of the UV absorbers, the polymeric inhibitors, the nitrones, the fluorescent whitening agents and metal chelating agents. Combinations of hydroxylamines or their salts, benzotriazole or benzophenone UV absorbers and a metal chelating agent are particularly effective.Type: GrantFiled: November 8, 2007Date of Patent: August 17, 2010Assignee: Ciba Specialty Chemicals CorporationInventors: Glen T. Cunkle, David Devore, Thomas F. Thompson
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Patent number: 7312332Abstract: Selected chlorohydrin and cationic compounds containing nitroxide or hydroxylamine moieties are effective in stabilizing pulp or paper, especially pulp or paper containing lignin, against yellowing and discoloration due to the adverse effects of light. These compounds are added at various points in the paper-making process, especially at the wet ends, making the need for water soluble or water dispersible materials having high affinity for pulp or paper essential. This performance is often further enhanced by the presence of one or more coadditives selected from the group consisting of the UV absorbers, the polymeric inhibitors, the nitrones, the fluorescent whitening agents and metal chelating agents. Combinations of hydroxylamines or their salts, benzotriazole or benzophenone UV absorbers and a metal chelating agent are particularly effective.Type: GrantFiled: November 1, 2004Date of Patent: December 25, 2007Assignee: Ciba Specialty Chemicals CorporationInventors: Glen T. Cunkle, David Devore, Thomas F. Thompson
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Patent number: 6989449Abstract: Selected chlorohydrin and cationic compounds containing nitroxide or hydroxylamine moieties are effective in stabilizing pulp or paper, especially pulp or paper containing lignin, against yellowing and discoloration due to the adverse effects of light. These compounds are added at various points in the paper-making process, especially at the wet ends, making the need for water soluble or water dispersible materials having high affinity for pulp or paper essential. This performance is often further enhanced by the presence of one or more coadditives selected from the group consisting of the UV absorbers, the polymeric inhibitors, the nitrones, the fluorescent whitening agents and metal chelating agents. Combinations of hydroxylamines or their salts, benzotriazole or benzophenone UV absorbers and a metal chelating agent are particularly effective.Type: GrantFiled: September 11, 2000Date of Patent: January 24, 2006Assignee: Ciba Specialty Chemicals CorporationInventors: Glen T. Cunkle, David Devore, Thomas F. Thompson
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Patent number: 6599326Abstract: Chemical pulps or papers, especially kraft pulps or papers, which may still contain traces of lignin, have enhanced resistance to yellowing when they contain an effective stabilizing amount of a N,N-dialkylhydroxylamine, an ester, amide or thio substituted N,N-dialkylhydroxylamine or N,N-dibenzylhydroxylamine or an amminium salt thereof. This performance is often further enhanced by the presence of one or more coadditives selected from the group consisting of the UV absorbers, the polymeric inhibitors, the nitrones, the fluorescent whitening agents and metal chelating agents. Combinations of hydroxylamines or their salts, benzotriazole or benzophenone UV absorbers and a metal chelating agent are particularly effective. N,N-Diethylhydroxylamine and N,N-dibenzylhydroxylamine and their acid salts are surprisingly effective for this purpose.Type: GrantFiled: January 12, 2000Date of Patent: July 29, 2003Assignee: Ciba Specialty Chemicals CorporationInventors: Raymond Seltzer, David Devore, Glen T. Cunkle, Cyril Heitner, John A. Schmidt, Peter F. McGarry, Jean-Pierre Wolf, Randall B. Nelson
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Patent number: 6500303Abstract: Pulps or papers, especially chemimechanical or thermomechanical pulps or papers, which still contain lignin, have enhanced resistance to yellowing when they contain an effective stabilizing amount of a hindered amine compound which preferably is a nitroxide, a hydroxylamine or an ammonium salt thereof. This performance is often further enhanced by the presence of one or more coadditives selected from the group consisting of the UV absorbers, the polymeric inhibitors, the nitrones, the fluorescent whitening agents, metal chelating agents, sulfur containing stabilizers, metal salts and diene compounds. Combinations of nitroxides, hydroxylamines or their salts, benzotriazole or benzophenone UV absorbers and a metal chelating agent are particularly effective. Selected derivatives of 1-oxyl-2,2,6,6-tetramethyl-piperidin-4-ol and selected hydroxylamine salts are novel compounds and are surprisingly effective for this purpose.Type: GrantFiled: May 18, 2000Date of Patent: December 31, 2002Assignee: Ciba Specialty Chemicals CorporationInventors: Raymond R. Seltzer, Jean-Pierre Wolf, Cyril Heitner, John A. Schmidt, Peter F. McGarry, Glen T. Cunkle, Randall B. Nelson
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Publication number: 20020174964Abstract: Pulps or papers, especially chemimechanical or thermomechanical pulps or papers, which still contain lignin, have enhanced resistance to yellowing when they contain an effective stabilizing amount of a N,N-dialkylhydroxylamine, an ester, amide or thio item substituted N,N-dialkylhydroxylamine or N,N-dibenzylhydroxylamine or an amminium salt thereof. This performance is often further enhanced by the presence of one or more coadditives selected from the group consisting of the UV absorbers, the polymeric inhibitors, the nitrones, the fluorescent whitening agents and metal chelating agents. Combinations of hydroxylamines or their salts, benzotriazole or benzophenone UV absorbers and a metal chelating agent are particularly effective. N,N-Diethylhydroxylamine and N,N-dibenzylhydroxylamine and their acid salts are surprisingly effective for this purpose.Type: ApplicationFiled: May 7, 2002Publication date: November 28, 2002Inventors: Raymond Seltzer, David Devore, Glen T. Cunkle, Cyril Heitner, John A. Schmidt, Peter F. McGarry, Jean-Pierre Wolf, Randall B. Nelson
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Publication number: 20020124980Abstract: Pulps or papers, especially chemimechanical or thermomechanical pulps or papers, which still contain lignin, have enhanced resistance to yellowing when they contain an effective stabilizing amount of a hindered amine compound which preferably is a nitroxide, a hydroxylamine or an ammonium salt thereof. This performance is often further enhanced by the presence of one or more coadditives selected from the group consisting of the UV absorbers, the polymeric inhibitors, the nitrones, the fluorescent whitening agents, metal chelating agents, sulfur containing stabilizers, metal salts and diene compounds. Combinations of nitroxides, hydroxylamines or their salts, benzotriazole or benzophenone UV absorbers and a metal chelating agent are particularly effective. Selected derivatives of 1-oxyl-2,2,6,6-tetramethyl-piperidin-4-ol and selected hydroxylamine salts are novel compounds and are surprisingly effective for this purpose.Type: ApplicationFiled: October 10, 2001Publication date: September 12, 2002Inventors: Raymond R. Seltzer, Jean-Pierre Wolf, Cyril Heitner, John A. Schmidt, Peter F. McGarry, Glen T. Cunkle, Randall B. Nelson
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Patent number: 6447644Abstract: Pulps or papers, especially chemimechanical or thermomechanical pulps or papers, which still contain lignin, have enhanced resistance to yellowing when they contain an effective stabilizing amount of a hindered amine compound which preferably is a nitroxide, a hydroxylamine or an ammonium salt thereof. This performance is often further enhanced by the presence of one or more coadditives selected from the group consisting of the UV absorbers, the polymeric inhibitors, the nitrones, the fluorescent whitening agents, metal chelating agents, sulfur containing stabilizers, metal salts and diene compounds. Combinations of nitroxides, hydroxylamines or their salts, benzotriazole or benzophenone UV absorbers and a metal chelating agent are particularly effective. Selected derivatives of 1-oxyl-2,2,6,6-tetramethylpiperidin-4-ol and selected hydroxylamine salts are novel compounds and are surprisingly effective for this purpose.Type: GrantFiled: October 10, 2001Date of Patent: September 10, 2002Assignee: Ciba Specialty Chemicals CorporationInventors: Raymond R. Seltzer, Jean-Pierre Wolf, Cyril Heitner, John A. Schmidt, Peter F. McGarry, Glen T. Cunkle, Randall B. Nelson
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Publication number: 20020088574Abstract: Pulps or papers, especially chemimechanical or thermomechanical pulps or papers, which still contain lignin, have enhanced resistance to yellowing when they contain an effective stabilizing amount of a N,N-dialkylhydroxylamine, an ester, amide or thio substituted N,N-dialkylhydroxylamine or N,N-dibenzylhydroxylamine or an amminium salt thereof. This performance is often further enhanced by the presence of one or more coadditives selected from the group consisting of the UV absorbers, the polymeric inhibitors, the nitrones, the fluorescent whitening agents and metal chelating agents. Combinations of hydroxylamines or their salts, benzotriazole or benzophenone UV absorbers and a metal chelating agent are particularly effective. N,N-Diethylhydroxylamine and N,N-dibenzylhydroxylamine and their acid salts are surprisingly effective for this purpose.Type: ApplicationFiled: January 20, 1999Publication date: July 11, 2002Inventors: RAYMOND SELTZER, DAVID DEVORE, GLEN T. CUNKLE, CYRIL HEITNER, JOHN A. SCHMIDT, PETER F. MCGARRY, JEAN-PIERRE WOLF, RANDALL B. NELSON
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Patent number: 6416627Abstract: Selected polymeric stabilizers with pendant nitroxide, hydroxylamine or hydroxy-ammonium salt groups B are water soluble or water dispersible and have high affinity to pulp or paper. These stabilizers prevent the loss of brightness and enhance resistance to yellowing in pulp or paper, especially pulp or paper containing lignin. These compounds are added at various points in the paper-making process, especially at the wet ends, making the need for water soluble or water dispersible materials having high affinity for pulp or paper essential. This performance is often further enhanced by the presence of one or more coadditives selected from the group consisting of the UV absorbers, the polymeric inhibitors, the nitrones, the fluorescent whitening agents and metal chelating agents. Combinations of hydroxylamines or their salts, benzotriazole or benzophenone UV absorbers and a metal chelating agent are particularly effective.Type: GrantFiled: September 11, 2000Date of Patent: July 9, 2002Assignee: Ciba Specialty Chemicals CorporationInventors: Glen T. Cunkle, David Devore, Thomas F. Thompson
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Patent number: 6254724Abstract: Pulps or papers, especially chemimechanical or thermomechanical pulps or papers, which still contain lignin, have enhanced resistance to yellowing when they contain an effective stabilizing amount of a hindered amine compound which preferably is a nitroxide, a hydroxylamine or an ammonium salt thereof. This performance is often further enhanced by the presence of one or more coadditives selected from the group consisting of the UV absorbers, the polymeric inhibitors, the nitrones, the fluorescent whitening agents, metal chelating agents, sulfur containing stabilizers, metal salts and diene compounds. Combinations of nitroxides, hydroxylamines or their salts, benzotriazole or benzophenone UV absorbers and a metal chelating agent are particularly effective. Selected derivatives of 1-oxyl-2,2,6,6-tetramethyl-piperidin-4-ol and selected hydroxylamine salts are novel compounds and are surprisingly effective for this purpose.Type: GrantFiled: July 20, 1998Date of Patent: July 3, 2001Assignee: Ciba Specialty Chemicals CorporationInventors: Raymond R. Seltzer, Jean-Pierre Wolf, Cyril Heitner, John A. Schmidt, Peter F. McGarry, Glen T. Cunkle, Randall B. Nelson
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Patent number: 6211378Abstract: An environmentally friendly process for the preparation of the 4-functionalized N—OR derivatives of 2,2,6,6-tetraalkylpiperidines involves the hydrogen peroxide of the corresponding N—H compound to form the corresponding N-oxyl derivative, reacting two equivalents of the N-oxyl compound with one equivalent of a compound having an allylic hydrogen, a benzylic hydrogen or an activated methine hydrogen to form one equivalent of the corresponding N—OH compound and one equivalent of the corresponding N—OR compound, and recycling the N—OH compound back to the corresponding N-oxyl compound using hydrogen peroxide or air.Type: GrantFiled: May 20, 1999Date of Patent: April 3, 2001Assignee: Ciba Specialty Chemicals CorporationInventors: Joseph E. Babiarz, Stephen D. Pastor, Glen T. Cunkle
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Patent number: 6117276Abstract: When a nitroxyl compound is heated in an oxygen-free atmosphere with a vinyl aromatic monomer at 50-140.degree. C. for up to 60 days, it forms an activated inhibitor mixture which is superior to the nitroxyl compound itself in preventing the premature polymerization of a vinyl aromatic monomer during its processing and purification.Type: GrantFiled: March 26, 1998Date of Patent: September 12, 2000Assignee: Nalco/Exxon Energy Chemicals, L.P.Inventors: Glen T. Cunkle, Thomas F. Thompson, Volker H. von Ahn, Roland A. E. Winter
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Patent number: 6080864Abstract: Selected derivatives of 1-oxyl-2,2,6,6-tetramethyl-4-hydroxypiperidine are surprisingly effective as inhibitors to prevent the premature polymerization of acrylic and methacrylic acids, their esters, their amides, vinyl acetate and acrylonitrile in the presence of water. Some of these derivatives are new compounds.Type: GrantFiled: February 1, 1999Date of Patent: June 27, 2000Assignee: Ciba Specialty Chemicals CorporationInventors: Glen T. Cunkle, Matthew E. Gande, Raymond Seltzer, Thomas F. Thompson
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Patent number: 5932735Abstract: Selected derivatives of 1-oxyl-2,2,6,6-tetramethyl-4-hydroxypiperidine are surprisingly effective as inhibitors to prevent the premature polymerization of acrylic and methacrylic acids, their esters, their amides, vinyl acetate and acrylonitrile in the presence of water. Some of these derivatives are new compounds.Type: GrantFiled: June 10, 1998Date of Patent: August 3, 1999Assignee: Ciba Specialty Chemicals CorporationInventors: Glen T. Cunkle, Matthew E. Gande, Raymond Seltzer, Thomas F. Thompson
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Patent number: 5928558Abstract: Selected derivatives of 1-oxyl-2,2,6,6-tetramethyl-4-aminopiperidine are surprisingly effective as inhibitors to prevent the premature polymerization of acrylic and methacrylic acids, their esters, their amides, vinyl acetate and acrylonitrile in the presence of water.Type: GrantFiled: April 23, 1998Date of Patent: July 27, 1999Assignee: Ciba Specialty Chemicals CorporationInventors: Glen T. Cunkle, Matthew E. Gande, Raymond Seltzer
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Patent number: 5877344Abstract: Ethylenically unsaturated carboxyl monomers, such as acrylic or methacrylic acid or their esters, are protected from premature polymerization during manufacture and storage in the presence or absence of water by the incorporation therein of an effective stabilizing amount of a blend two or more nitroxides. Some of these blends provide synergistic stabilization efficacy much superior to the stabilization results obtained by use of either nitroxide alone.Type: GrantFiled: June 13, 1997Date of Patent: March 2, 1999Assignee: Ciba Specialty Chemicals CorporationInventors: Matthew E. Gande, Glen T. Cunkle, Leslie R. Gatechair, Stephen D. Pastor, Raymond Seltzer, Roland A.E. Winter
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Patent number: 5492954Abstract: N,N,N',N'-Tetrasubstituted 1,4-diamino-2-butenes where the substituents are alkyl, cycloalkyl, aralkyl, aryl or mixtures thereof provide effective antioxidant protection to lubricants and/or synthetic polymers.Type: GrantFiled: November 18, 1994Date of Patent: February 20, 1996Assignee: Ciba-Geigy CorporationInventors: Joseph E. Babiarz, Glen T. Cunkle, Werner Rutsch
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Patent number: 5391808Abstract: N,N,N',N'-Tetrasubstituted 1,4-diamino-2-butenes where the substituents are alkyl, cycloalkyl, aralkyl, aryl or mixtures thereof provide effective antioxidant protection to lubricants and/or synthetic polymers.Type: GrantFiled: November 1, 1993Date of Patent: February 21, 1995Assignee: Ciba-Geigy CorporationInventors: Joseph E. Babiarz, Glen T. Cunkle, Werner Rutsch