Patents by Inventor Russell E. Malz
Russell E. Malz 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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Patent number: 8062551Abstract: An antiozonant mixture is disclosed wherein said mixture comprises at least two compounds, (A) at least one of which is of the structure and (B) at least one other of which is of the structure wherein R1 is a straight chain, branched, or cyclic alkyl group comprising from three to seven carbon atoms, and R2 is a straight chain, branched, or cyclic alkyl group comprising at least eleven carbon atoms.Type: GrantFiled: May 2, 2006Date of Patent: November 22, 2011Assignee: Chemtura CorporationInventors: Martin J. Hannon, Russell E. Malz, Jr., Joseph F. Stieber
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Patent number: 6953866Abstract: A process is disclosed for preparing ortho substituted phenylamines comprising contacting phenylhydroxylamine, optionally substituted with at least one inert substituent, with a nucleophilic reagent in the presence of a manganese oxide at a temperature between about 10° C. and about 170° C. and a pressure from subatmospheric to superatmospheric such that an ortho substituted phenylamine, optionally correspondingly substituted with at least one inert substituent, is predominantly formed.Type: GrantFiled: January 30, 2004Date of Patent: October 11, 2005Assignee: Crompton CorporationInventors: Russell E. Malz, Jr., Ranjit Kumar, Luis Javier Garces, Steven L. Suib
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Publication number: 20040162444Abstract: A process is disclosed for preparing ortho substituted phenylamines comprising contacting phenylhydroxylamine, optionally substituted with at least one inert substituent, with a nucleophilic reagent in the presence of a manganese oxide at a temperature between about 10° C. and about 170° C. and a pressure from subatmospheric to superatmospheric such that an ortho substituted phenylamine, optionally correspondingly substituted with at least one inert substituent, is predominantly formed.Type: ApplicationFiled: January 30, 2004Publication date: August 19, 2004Inventors: Russell E. Malz, Ranjit Kumar, Luis Javier Garces, Steven L. Suib
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Patent number: 6706216Abstract: Liquid antiozonant mixtures obtained from the process comprising simultaneously reacting at least one unsubstituted and/or substituted paraphenylenediamine compound with a carbonyl compound mixture comprising acetone and at least one other carbonyl compound selected from the group consisting of ketones containing from 4 to about 12 carbon atoms, aldehydes containing from 1 to about 12 carbon atoms and mixtures thereof in the presence of a reductive alkylation catalyst is provided. Rubber compositions containing the liquid antiozonant mixtures is also provided.Type: GrantFiled: April 19, 2000Date of Patent: March 16, 2004Assignee: Uniroyal Chemical Company, Inc.Inventors: Russell E. Malz, Jr., Michael P. Reynolds, Richard A. Gencarelli
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Patent number: 6706217Abstract: Liquid antiozonant mixtures obtained from the process comprising simultaneously reacting at least one unsubstituted and/or substituted paraphenylenediamine compound with a carbonyl compound mixture comprising acetone and at least one other carbonyl compound selected from the group consisting of ketones containing from 4 to about 12 carbon atoms, aldehydes containing from 1 to about 12 carbon atoms and mixtures thereof in the presence of a reductive alkylation catalyst is provided. Rubber compositions containing the liquid antiozonant mixtures is also provided.Type: GrantFiled: October 22, 2001Date of Patent: March 16, 2004Assignee: Uniroyal Chemical Company, Inc.Inventors: Russell E. Malz, Jr., Michael P. Reynolds, Richard A. Gencarelli
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Patent number: 6646127Abstract: A process for the synthesis of 2,2,6,6-tetramethyl-4-oxopiperidine is disclosed wherein the process comprises reacting in a liquid phase reaction mixture: A) at least one acetone compound, and B) at least one ammonia donor compound, in the presence of a catalytically effective amount of a crystalline aluminosilicate containing calcium.Type: GrantFiled: October 2, 2001Date of Patent: November 11, 2003Assignees: Uniroyal Chemical Company, Inc., University of ConnecticutInventors: Russell E. Malz, Jr., Young-Chan Son, Steven L. Suib
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Publication number: 20020128482Abstract: A process for the synthesis of 2,2,6,6-tetramethyl-4-oxopiperidine is disclosed wherein the process comprises reacting in a liquid phase reaction mixture:Type: ApplicationFiled: October 2, 2001Publication date: September 12, 2002Inventors: Russell E. Malz, Young-Chan Son, Steven L. Suib
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Patent number: 6417381Abstract: A process is provided for preparing a bis(silylorgano)amine in which a cyanoorganosilane is reacted with hydrogen under hydrogenation conditions in the presence of a catalytically effective amount of hydrogenation catalyst selected from the group consisting of rhodium, ruthenium, palladium and platinum to produce the secondary aminoorganosilane.Type: GrantFiled: November 15, 2001Date of Patent: July 9, 2002Assignee: Crompton CorporationInventors: Steven C. Gedon, Melinda Hale, Michael P. Reynolds, Russell E. Malz, Jr.
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Publication number: 20020061946Abstract: Liquid antiozonant mixtures obtained from the process comprising simultaneously reacting at least one unsubstituted and/or substituted paraphenylenediamine compound with a carbonyl compound mixture comprising acetone and at least one other carbonyl compound selected from the group consisting of ketones containing from 4 to about 12 carbon atoms, aldehydes containing from 1 to about 12 carbon atoms and mixtures thereof in the presence of a reductive alkylation catalyst is provided. Rubber compositions containing the liquid antiozonant mixtures is also provided.Type: ApplicationFiled: October 22, 2001Publication date: May 23, 2002Inventors: Russell E. Malz, Michael P. Reynolds, Richard A. Gencarelli
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Patent number: 6222041Abstract: An improved process for the preparation of 2-mercaptobenzothiazole by reacting aniline, nitrobenzene, and carbon disulfide is disclosed wherein the improvement comprises employing a reaction temperature profile comprising the steps of: (A) heating the reactants to at least one temperature less than or equal to about 150° C.; (B) then heating the reactants to a temperature in the range of from about 150° C. to about 170° C.; and (C) then heating the reactants to a temperature in the range of from about 220° C. to about 275° C.Type: GrantFiled: February 24, 2000Date of Patent: April 24, 2001Assignee: Uniroyal Chemical Company, Inc.Inventors: Michael P. Reynolds, Russell E. Malz, Jr.
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Patent number: 5925790Abstract: A method for producing aromatic amines such as N-phenyl-p-phenylenediamine is disclosed wherein an amine substituted aromatic such as aniline is oxidized with oxygen or hydrogen peroxide in the presence of a preferred trisodium pentacyano ferrate(II) complex containing various water soluble ligands, such as ammonia, mono alkyl amine, dialkyl amines, and trialkyl amines. The complex is subsequently catalytically reduced by hydrogenation using certain heterogeneous metal catalysts to yield the desired aromatic amine.Type: GrantFiled: March 13, 1997Date of Patent: July 20, 1999Assignee: Uniroyal Chemical Company, Inc.Inventors: Edward L. Wheeler, Russell E. Malz, Jr., Mark W. Simon
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Patent number: 5840982Abstract: An improvement in a process for the preparation of a p-aminodiarylamine by reduction of the corresponding nitroso or nitro compound with hydrogen in a hydrogenator in the presence of a catalyst is disclosed. The invention includes equipping the hydrogenator with filtration means capable of separating the p-aminodiarylamine product from the catalyst, whereby the p-aminodiarylamine product can be removed from the hydrogenator while the catalyst is retained therein, thereby permitting the reaction to be run semicontinuously or continuously.Type: GrantFiled: June 4, 1998Date of Patent: November 24, 1998Assignee: Uniroyal Chemical Company, Inc.Inventors: Michael Reynolds, Russell E. Malz
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Patent number: 5574187Abstract: Processes of preparing para substituted phenylamines, such as, p-phenylenediamines, and particularly, p-aminodiphenylamine. One process involves contacting phenylhydroxylamine with a nucleophilic reagent, such as aniline, in specified proportions and within a specified temperature range, in the absence of oxygen, and in the presence of a homogeneous acid catalyst, such as hydrochloric acid. A second process involves contacting phenylhydroxylamine with a nucleophilic reagent, such as aniline, in the presence of a solid acid catalyst, such as acidic zeolite Y, under reaction conditions.Type: GrantFiled: October 6, 1994Date of Patent: November 12, 1996Assignee: Uniroyal Chemical Company, Inc.Inventors: Russell E. Malz, Gerard V. Smith, Mark P. Ferrandino, Ruozhi Song, Chung-Yuan Lin, Franklin H. Barrows
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Patent number: 5420354Abstract: A process of preparing para phenylenediamines, such as, p-aminodiphenylamine. The process involves contacting nitrobenzene or a substituted derivative thereof with hydrogen and an amine, such as aniline, in the presence of a hydrogenation catalyst, a hydrogenation inhibitor, and an acid cocatalyst under reaction conditions.Type: GrantFiled: October 6, 1994Date of Patent: May 30, 1995Assignee: Uniroyal Chemical Company, Inc.Inventors: Russell E. Malz, Gerard V. Smith, Mark P. Ferrandino, Ruozhi Song
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Patent number: 4814504Abstract: Diphenylamine is produced by contacting aniline with an alumina catalyst having at least about 30 percent by volume of its total porosity in the form of pores having a diameter of between about 120 and about 200 Angstroms and a sulfur content, as measured in the form of SO.sub.4, of less than about 0.02 percent by weight at between about 380.degree. and 475.degree. C.Type: GrantFiled: September 3, 1986Date of Patent: March 21, 1989Assignee: Uniroyal Chemical Company, Inc.Inventor: Russell E. Malz, Jr.
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Patent number: 4814444Abstract: Certain 2-quinoxalinol-4-oxides are selectively reduced to form 2-quinoxalinols employing hydrogen as a reducing agent by reacting such 2-quinoxalinol-4-oxides with a catalyst selected from the group consisting of sulfided platinum, sulfided palladium, sulfided rhodium and sulfided ruthenium.Type: GrantFiled: June 19, 1987Date of Patent: March 21, 1989Assignee: Uniroyal Chemical Company, Inc.Inventors: Russell E. Malz, Jr., John W. Sargent, Joseph A. Feiccabrino
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Patent number: 4607104Abstract: 2,2,6,6-tetraalkyl-4-piperidylamines are produced by reacting an amine with a 2,2,6,6-tetraalkyl-4-piperidone in the presence of a catalyst selected from the group consisting of platinum, nickel and cobalt, employing a reaction medium comprising (a) between about 10 and 100 weight percent water and (b) between 0 and about 90 weight percent of a polar organic compound selected from the group consisting of C.sub.1 -C.sub.10 aliphatic alcohols and C.sub.2 -C.sub.6 aliphatic glycols.Type: GrantFiled: July 11, 1985Date of Patent: August 19, 1986Assignee: Uniroyal Chemical Company, Inc.Inventors: Russell E. Malz, Jr., Harold Greenfield
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Patent number: 4605743Abstract: 2,2,6,6-tetraalkyl-4-piperidylamines are produced by reacting an amine with a 2,2,6,6-tetraalkyl-4-piperidone in the presence of a palladium catalyst.Type: GrantFiled: April 16, 1985Date of Patent: August 12, 1986Assignee: Uniroyal Chemical Company, Inc.Inventors: Russell E. Malz, Jr., Harold Greenfield
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Patent number: 4431841Abstract: An improved process for preparing diarylamines from alicyclic ketones, a primary aromatic amine, and a hydrogen acceptor, in the presence of a platinum metal catalyst and an acid promoter.Type: GrantFiled: September 16, 1982Date of Patent: February 14, 1984Assignee: Uniroyal, Inc.Inventors: Russell E. Malz, Jr., Harold Greenfield
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Patent number: 4069240Abstract: N-Alicyclic carbamates, useful in making polyurethanes, are prepared by nuclear hydrogenation of an N-aryl carbamate using a group VIII transition metal catalyst. E.g., dimethyl 4,4'-methylenedicarbanilate is contacted with hydrogen and ruthenium catalyst in 2-propanol medium, at 50.degree. C. for 1.3 hours under a pressure of 500-800 psi, to form dimethyl 4,4'-methylenedicyclohexylcarbamate. Acid activation of catalyst is a feature of the invention.Type: GrantFiled: September 4, 1975Date of Patent: January 17, 1978Assignee: Uniroyal, Inc.Inventors: Russell E. Malz, Jr., Harold Greenfield