Patents by Inventor John J. Luzzi

John J. Luzzi 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).

  • Patent number: 5574163
    Abstract: When a tetraalkyl orthotitanate transesterification catalyst is used in the preparation of N-oxyl hindered amine esters, the N-oxyl compound is obtained in excellent yield and purity when moderate temperatures (90.degree.-130.degree. C.) and an aliphatic hydrocarbon solvent are used. The N-oxyl compounds are light stabilizers and also inhibitors for preventing the premature polymerization of ethylenically unsaturated monomers.
    Type: Grant
    Filed: August 31, 1994
    Date of Patent: November 12, 1996
    Assignee: Ciba-Geigy Corporation
    Inventor: John J. Luzzi
  • Patent number: 5439955
    Abstract: 2-(Benzotriazol-2-yl)-4-alkyl-6-(2-hydroxy-3-benzoyl-6-alkoxybenzyl)phenols are prepared by reacting a Mannich base of a 2-(2-hydroxy-5-alkylphenyl)-2H-benzotriazole with a 2-hydroxy-4-alkoxybenzophenone. The hybrid products exhibit outstanding efficacy in protecting organic substrates from light-induced deterioration as well as good resistance to loss by volatilization or exudation during the processing of stabilized compositions at elevated temperatures.
    Type: Grant
    Filed: November 1, 1994
    Date of Patent: August 8, 1995
    Assignee: Ciba-Geigy Corporation
    Inventors: Robert A. Falk, John J. Luzzi, Gregory R. Coughlin
  • Patent number: 5387691
    Abstract: 2-(Benzotriazol-2-yl)-4-alkyl-6-(2-hydroxy-3-benzoyl-6-alkoxybenzyl)phenols am prepared by reacting a Mannich base of a 2-(2-hydroxy-5-alkylphenyl)-2H-benzotriazole with a 2-hydroxy-4-alkoxybenzophenone. The hybrid products exhibit outstanding efficacy in protecting organic substrates from light-induced deterioration as well as good resistance to loss by volatilization or exudation during the processing of stabilized compositions at elevated temperatures.
    Type: Grant
    Filed: March 5, 1993
    Date of Patent: February 7, 1995
    Assignee: Ciba-Geigy Corporation
    Inventors: Robert A. Falk, John J. Luzzi, Gregory R. Coughlin
  • Patent number: 5198134
    Abstract: N-Allyl and N-methylene-thio substituted naphthalene-1,8- or -1,5-diamine compounds are very effective antioxidant stabilizers for organic material subject to oxidative or thermal degradation, particularly for lubricant compositions.
    Type: Grant
    Filed: October 28, 1991
    Date of Patent: March 30, 1993
    Assignee: Ciba-Geigy Corporation
    Inventors: David H. Steinberg, John J. Luzzi
  • Patent number: 5147568
    Abstract: N-Allyl and N-methylene-thio substituted 2,3-dihydroperimidine compounds are very effective antioxidant stabilizers for organic material subject to oxidative or thermal degradation, particularly for lubricant compositions.
    Type: Grant
    Filed: October 28, 1991
    Date of Patent: September 15, 1992
    Assignee: Ciba-Geigy Corporation
    Inventors: John J. Luzzi, David H. Steinberg
  • Patent number: 5012003
    Abstract: An improved process for preparing dithiobisphenols comprising reacting an appropriate phenol with an alkali metal hydride, an alkaline earth metal hydride or mixtures thereof and subsequently reacting the product thereof with sulfur monochloride.
    Type: Grant
    Filed: October 28, 1988
    Date of Patent: April 30, 1991
    Assignee: Ciba-Geigy Corporation
    Inventors: David H. Steinberg, John J. Luzzi
  • Patent number: 4898980
    Abstract: An improved process for preparing dithiobisphenols wherein the appropriate phenol is reacted with sulfur monochloride in the presence of substantially molar amounts of an aliphatic or heterocyclic amine.
    Type: Grant
    Filed: June 29, 1988
    Date of Patent: February 6, 1990
    Assignee: Ciba-Geigy Corporation
    Inventors: Linda A. Benjamin, Stephen D. Pastor, John J. Luzzi
  • Patent number: 4618440
    Abstract: The title compounds correspond to the formula ##STR1## where R.sub.1 is tert-butyl, R.sub.2 is methyl or tert-butyl, R.sub.3, R.sub.4 and R.sub.7 are hydrogen, R.sub.5 and R.sub.8 are hydrogen or methyl, and R.sub.6 is hydrogen, alkyl of 1 to 3 carbon atoms or phenyl, and are useful as stabilizers for organic polymers and lubricating oils to counteract the degradative effects of heat, light and air.
    Type: Grant
    Filed: January 2, 1986
    Date of Patent: October 21, 1986
    Assignee: Ciba-Geigy Corporation
    Inventors: David H. Steinberg, John J. Luzzi, Frank P. Cortolano
  • Patent number: 4534874
    Abstract: The title compounds correspond to the formula ##STR1## wherein A is a monovalent, bivalent, trivalent or tetravalent radical of a mono-, di-, tri- or tetraamine. These compounds are useful as stabilizers for organic polymers and lubricating oils to counteract the degradative effects of heat, light and air.
    Type: Grant
    Filed: November 21, 1983
    Date of Patent: August 13, 1985
    Assignee: Ciba-Geigy Corporation
    Inventors: David H. Steinberg, Raymond Seltzer, John J. Luzzi, Frank P. Cortolano
  • Patent number: 4219464
    Abstract: Compounds having the formula ##STR1## wherein R.sub.1 and R.sub.2 are lower alkyl or together lower alkylene,R.sub.3 is hydrogen, alkyl, methoxyethyl, alkenyl, propargyl, benzyl, alkyl substituted benzyl, or acyl,R.sub.4 is alkylene of 1 to 4 carbon atoms substituted with alkyl or alkenyl of 1 to 18 carbon atoms, alkenylene of 1 to 4 carbon atoms, cycloalkylene, cycloalkenylene, bicycloalkylene, bicycloalkenylene, or phenylene,M is hydrogen or a metal, andz has a value of from 1 to 4, and either (a) R.sub.5 is alkyl of 1 to 6 carbon atoms, R.sub.6 is alkyl of 1 to 6 carbon atoms, and R.sub.7 and R.sub.8 are independently hydrogen or alkyl of 1 to 5 carbon atoms, provided that R.sub.7 and R.sub.8 are not both hydrogen, or(b) R.sub.5 and R.sub.6 are together lower alkylene and R.sub.7 and R.sub.8 are independently hydrogen or alkyl of 1 to 5 carbon atoms,are good light stabilizers.
    Type: Grant
    Filed: May 30, 1978
    Date of Patent: August 26, 1980
    Assignee: Ciba-Geigy Corporation
    Inventors: Chester E. Ramey, John J. Luzzi
  • Patent number: 4208522
    Abstract: Substituted piperazine diones are stabilizers for synthetic polymeric materials normally subject to deterioration caused by ultraviolet light. The compounds are prepared by the alkylation reaction between a substituted piperazine dione and an organic halide. Polymeric compositions containing these stabilizers may also contain a hindered phenolic compound. A typical embodiment is 15,15'-dodecamethylenebis(7,15-diazadispiro[5,1,5,3]hexadecane-14,16-dione ).
    Type: Grant
    Filed: October 6, 1978
    Date of Patent: June 17, 1980
    Assignee: Ciba-Geigy Corporation
    Inventors: Chester E. Ramey, John J. Luzzi
  • Patent number: 4191829
    Abstract: Compounds having the formula ##STR1## wherein R.sub.1 and R.sub.2 are lower alkyl or cycloalkyl,R.sub.3 is hydrogen, alkyl, methoxyethyl, alkenyl, propargyl, benzyl or alkyl substituted benzyl,R.sub.4 is alkylene of 1 to 4 carbon atoms substituted with alkyl or alkenyl of 1 to 18 carbon atoms, alkenylene of 1 to 4 carbon atoms, cycloalkylene, cycloalkenylene, bicycloalkylene, bicycloalkenylene, or phenyllene,M is hydrogen or a metal, andz has a value of from 1 to 4,are good light stabilizers. The carboxylic acids are prepared for example, from 2,2,6,6-tetramethylpiperidin-4-ol and cyclohexane-1,2-dicarboxylic anhydride to give (O-mono (2,2,6,6-tetramethylpiperidin-4-ol)cyclohexane(1,2-dicarboxylate. The metal salts of the acids are readily prepared by reacting the acids or their salts with a reactive form of the metal or metal complex.
    Type: Grant
    Filed: April 25, 1978
    Date of Patent: March 4, 1980
    Assignee: Ciba-Geigy Corporation
    Inventors: Chester E. Ramey, John J. Luzzi
  • Patent number: 4191682
    Abstract: Compounds having the formula ##STR1## wherein R.sub.1 and R.sub.2 are lower alkyl or together lower alkylene,R.sub.3 is hydrogen, alkyl, methoxyethyl, alkenyl, propargyl, benzyl, alkyl substituted benzyl, or acyl,R.sub.4 is alkylene, alkyl-thio-alkyl or alkyl-oxo-alkyl,M is hydrogen or a metal, and z has a value of from 1 to 4, and either(a) R.sub.5 is alkyl of 1 to 6 carbon atoms, R.sub.6 is alkyl of 1 to 6 carbon atoms, and R.sub.7 and R.sub.8 are independently hydrogen or alkyl of 1 to 5 carbon atoms, provided that R.sub.7 and R.sub.8 are not both hydrogen, or(b) R.sub.5 and R.sub.6 are together lower alkylene and R.sub.7 and R.sub.8 are independently hydrogen or alkyl of 1 to 5 carbon atoms,are good light stabilizers. The carboxylic acids are prepared for example, from 2,3,6-trimethyl-2,6-diethylpiperidin-4-ol and sebacic acid to give 2,3,6-trimethyl-2,6-diethyl-4-piperidyl hydrogen sebacate.
    Type: Grant
    Filed: June 22, 1978
    Date of Patent: March 4, 1980
    Assignee: Ciba-Geigy Corporation
    Inventors: Chester E. Ramey, John J. Luzzi
  • Patent number: 4139520
    Abstract: Compounds having the formula ##STR1## wherein R.sub.1 and R.sub.2 are lower alkyl or cycloalkyl,R.sub.3 is hydrogen, alkyl, methoxyethyl, alkenyl, propargyl, benzyl or alkyl substituted benzyl,R.sub.4 is alkylene of 1 to 4 carbon atoms substituted with alkyl or alkenyl of 1 to 18 carbon atoms, alkenylene of 1 to 4 carbon atoms, cycloalkylene, cycloalkenylene, bicycloalkylene, bicycloalkenylene, or phenyllene,M is hydrogen or a metal, andZ has a value of from 1 to 4, are good light stabilizers. The carboxylic acids are prepared for example, from 2,2,6,6-tetramethylpiperidin-4-ol and cyclohexane-1,2-dicarboxylic anhydride to give (O-mono(2,2,6,6-tetramethylpiperidin-4-ol)cyclohexane(1,2-dicarboxylate. The metal salts of the acids are readily prepared by reacting the acids or their salts with a reactive form of the metal or metal complex.
    Type: Grant
    Filed: May 26, 1977
    Date of Patent: February 13, 1979
    Assignee: Ciba-Geigy Corporation
    Inventors: Chester E. Ramey, John J. Luzzi
  • Patent number: 4125517
    Abstract: Substituted piperazine diones are stabilizers for synthetic polymeric materials normally subject to deterioration caused by ultraviolet light. The compounds are prepared by the alkylation reaction between a substituted piperazine dione and an organic halide. Polymeric compositions containing these stabilizers may also contain a hindered phenolic compound. A typical embodiment is 15,15'-dodecamethylene-bis(7,15-diazadispiro[5,1,5,3]hexadecane-14,16-dion e).
    Type: Grant
    Filed: September 22, 1977
    Date of Patent: November 14, 1978
    Assignee: Ciba-Geigy Corporation
    Inventors: Chester E. Ramey, John J. Luzzi
  • Patent number: 4120846
    Abstract: Benzoyloxybenzoates having the formula ##STR1## wherein R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are lower alkyl or cycloalkyl,X is oxygen or sulfur, andR.sup.5 is alkyl, aryl, alkaryl or hydrogenAre useful as stabilizers of organic materials such as polyolefins.
    Type: Grant
    Filed: September 22, 1977
    Date of Patent: October 17, 1978
    Assignee: Ciba-Geigy Corporation
    Inventors: John D. Spivack, John J. Luzzi
  • Patent number: 4116933
    Abstract: Compounds having the formula ##STR1## WHEREIN R.sub.1 and R.sub.2 are lower alkyl or together lower alkylene,R.sub.3 is hydrogen, alkyl, methoxyethyl, alkenyl, propargyl, benzyl, alkyl substituted benzyl, or acyl,R.sub.4 is alkylene, alkyl-thio-alkyl or alkyl-oxo-alkyl,M is hydrogen or a metal, andz has a value of from 1 to 4, and either (a) R.sub.5 is alkyl of 1 to 6 carbon atoms, R.sub.6 is alkyl of 1 to 6 carbon atoms, and R.sub.7 and R.sub.8 are independently hydrogen or alkyl of 1 to 5 carbon atoms, provided that R.sub.7 and R.sub.8 are not both hydrogen, or(b) R.sub.5 and R.sub.6 are together lower alkylene and R.sub.7 and R.sub.8 are independently hydrogen or alkyl of 1 to 5 carbon atoms,Are good light stabilizers. The carboxylic acids are prepared for example, from 2,3,6-trimethyl-2,6-diethylpiperidin-4-ol and sebacic acid to give 2,3,6-trimethyl-2,6-diethyl-4-piperidyl hydrogen sebacate.
    Type: Grant
    Filed: June 28, 1976
    Date of Patent: September 26, 1978
    Assignee: Ciba-Geigy Corporation
    Inventors: Chester E. Ramey, John J. Luzzi
  • Patent number: 4101509
    Abstract: Compounds having the formula ##STR1## wherein R.sub.1 and R.sub.2 are lower alkyl or together lower alkylene,R.sub.3 is hydrogen, alkyl, methoxyethyl, alkenyl, propargyl, benzyl, alkyl substituted benzyl, or acyl,R.sub.4 is alkylene of 1 to 4 carbon atoms substituted with alkyl or alkenyl of 1 to 18 carbon atoms, alkenylene of 1 to 4 carbon atoms, cycloalkylene, cycloalkenylene, bicycloalkylene, bicycloalkenylene, or phenylene,M is hydrogen or a metal, andz has a value of from 1 to 4, andEither(a) R.sub.5 is alkyl of 1 to 6 carbon atoms, R.sub.6 is alkyl of 1 to 6 carbon atoms, and R.sub.7 and R.sub.8 are independently hydrogen or alkyl of 1 to 5 carbon atoms, provided that R.sub.7 and R.sub.8 are not both hydrogen, or(b) R.sub.5 and R.sub.6 are together lower alkylene and R.sub.7 and R.sub.8 are independently hydrogen or alkyl of 1 to 5 carbon atoms,Are good light stabilizers.
    Type: Grant
    Filed: March 29, 1976
    Date of Patent: July 18, 1978
    Assignee: Ciba-Geigy Corporation
    Inventors: Chester E. Ramey, John J. Luzzi
  • Patent number: 4089842
    Abstract: Compounds having the formula ##STR1## wherein R.sub.1 and R.sub.2 are lower alkyl or cycloalkyl,R.sub.3 is hydrogen, alkyl, methoxyethyl, alkenyl, propargyl, benzyl or alkyl substituted benzyl,R.sub.4 is alkylene, alkyl-thio-alkyl or alkyl-oxo-alkyl,M is hydrogen or a metal, andz has a value of from 1 to 4,Are good light stabilizers. The carboxylic acids are prepared, for example, from 2,2,6,6-tetramethylpiperidin-4-ol and sebacic acid to give o-mono(2,2,6,6-tetramethylpiperidin-4-ol)sebacate. The metal salts of the acids are readily prepared by reacting the acids or their salts with a reactive form of the metal or metal complex.
    Type: Grant
    Filed: September 22, 1975
    Date of Patent: May 16, 1978
    Assignee: Ciba-Geigy Corporation
    Inventors: Chester E. Ramey, John J. Luzzi
  • Patent number: 4087406
    Abstract: Compounds having the formula ##STR1## wherein R.sub.1 and R.sub.2 are lower alkyl or cycloalkyl,R.sub.3 is hydrogen, alkyl, methoxyethyl, alkenyl, propargyl, benzyl or alkyl substituted benzyl,R.sub.4 is lower alkylene,M is a metal, andZ has a value of from 1 to 4,Are good light stabilizers. The carboxylic acids are prepared, for example, from 2,2,6,6-tetramethyl-piperidin-4-ol and succinic acid to give o-mono(2,2,6,6-tetramethyl-piperidin-4-ol)succinate. The metal salts of the acids are readily prepared by reacting the acids or their salts with a reactive form of the metal or metal complex.
    Type: Grant
    Filed: January 19, 1976
    Date of Patent: May 2, 1978
    Assignee: Ciba-Geigy Corporation
    Inventors: Chester E. Ramey, John J. Luzzi