Patents by Inventor David J. Tracy

David J. Tracy 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: 6057282
    Abstract: Imadazoline-based amphoacetates of higher purity, containing essentially negligible amounts of unalkylated amido amines, lower amounts of glycolic acid salts and monochloroacetate salts, superior to currently available conventional amphoacetates, are provided. This is demonstrated by their improved surface-active properties. Lower inherent irritation properties may be expected due to improved purity.The higher purity amphoacetates can be obtained via processes utilizing precise pH control during the reaction of imidazoline, or its open-chain derivatives, with alkylating agents, e.g. sodium monochloroacetate. The pH can be controlled by adding the base slowly or automatically in response to a pH metering device to maintain a constant pH, or by a series of staged additions which are calculated to maintain pH within a stated range. The reaction may also be carried out by conducting the initial hydrolysis of the imidazoline ring structure, followed by alkylation.
    Type: Grant
    Filed: August 23, 1999
    Date of Patent: May 2, 2000
    Assignee: Rhodia Inc.
    Inventors: Bharat Desai, Peter Lees, Jean-Marc Ricca, David J. Tracy
  • Patent number: 5952291
    Abstract: Imadazoline-based amphoacetates of higher purity, containing essentially negligible amounts of unalkylated amido amines, lower amounts of glycolic acid salts and monochloroacetate salts, superior to currently available conventional amphoacetates, are provided. This is demonstrated by their improved surface-active properties. Lower inherent irritation properties may be expected due to improved purity.The higher purity amphoacetates can be obtained via processes utilizing precise pH control during the reaction of imidazoline, or its open-chain derivatives, with alkylating agents, e.g. sodium monochloroacetate. The pH can be controlled by adding the base slowly or automatically in response to a pH metering device to maintain a constant pH, or by a series of staged additions which are calculated to maintain pH within a stated range. The reaction may also be carried out by conducting the initial hydrolysis of the imidazoline ring structure, followed by alkylation.
    Type: Grant
    Filed: April 6, 1998
    Date of Patent: September 14, 1999
    Assignee: Rhodia Inc.
    Inventors: Bharat Desai, Peter Lees, Jean-Marc Ricca, David J. Tracy
  • Patent number: 5744063
    Abstract: Imadazoline-based amphoacetates of higher purity, containing essentially negligible amounts of unalkylated amido amines, lower amounts of glycolic acid salts and monochloroacetate salts, superior to currently available conventional amphoacetates, are provided. This is demonstrated by their improved surface-active properties. Lower inherent irritation properties may be expected due to improved purity. The higher purity amphoacetates can be obtained via processes utilizing precise pH control during the reaction of imidazoline, or its open-chain derivatives, with alkylating agents, e.g. sodium monochloroacetate. The pH can be controlled by adding the base slowly or automatically in response to a pH metering device to maintain a constant pH, or by a series of staged additions which are calculated to maintain pH within a stated range. The reaction may also be carried out by conducting the initial hydrolysis of the imidazoline ring structure, followed by alkylation.
    Type: Grant
    Filed: February 18, 1997
    Date of Patent: April 28, 1998
    Assignee: Rhone-Poulenc Inc.
    Inventors: Bharat Desai, Peter Lees, Jean-Marc Ricca, David J. Tracy
  • Patent number: 5300665
    Abstract: Fatty acid esters of hydroxyalkylsulfonates and fatty acid amides of aminoalkylsulfonates are prepared by heating an excess of the fatty acids with the sulfonate until the water of condensation is removed. The excess fatty acid is removed by distillation and the isolated fatty acid ester or amide product is directly and rapidly cooled to minimize decomposition and color degradation.
    Type: Grant
    Filed: September 16, 1992
    Date of Patent: April 5, 1994
    Assignee: Rhone-Poulenc Surfactants and Specialties, L.P.
    Inventors: David J. Tracy, Mitchell B. Ferguson, Gordon Wall
  • Patent number: 5294644
    Abstract: The invention relates to properties and uses of N-hydrocarbon substituted lactams, particularly N-alkyl substituted lactams having the formula ##STR1## wherein R' is a hydrophobic radical such as linear or branched chain alkyl group containing from 8 to 27 carbon atoms, most preferably micelle forming pyrrolidones having 12 to 16 carbon atoms in the R' group. The invention particularly relates to the uses of the N-hydrocarbon substituted lactams which involve surfactant properties, such as solubility, wetting, viscosity building, emulsifying and/or complexing properties.
    Type: Grant
    Filed: February 12, 1991
    Date of Patent: March 15, 1994
    Assignee: ISP Investments Inc.
    Inventors: Robert B. Login, Ratan K. Chaudhuri, Rama K. Haldar, Mohamed M. Hashem, Michael W. Helioff, David J. Tracy
  • Patent number: 5156837
    Abstract: The invention relates to cosmetic compositions containing quaternized compounds having the formula: ##STR1## wherein n and n' are each independently integers having a value of from 1 to 25; p is an integer having a value of from 1 to 4; Y and Y' are each independently H or CH.sub.3 ; R is linear alkyl, alkenyl, or amidoalkyl having from 8 to 22 carbon atoms and is optionally substituted with C.sub.1 to C.sub.4 alkyl; Z is linear alkylene having from 3 to 8 carbon atoms and is optionally substituted with lower alkyl and A.sup.- is an anion.
    Type: Grant
    Filed: September 14, 1990
    Date of Patent: October 20, 1992
    Assignee: ISP Investments Inc.
    Inventors: Ratan K. Chaudhuri, David J. Tracy, Robert B. Login
  • Patent number: 5110585
    Abstract: The invention relates primarily to quaternized polycyclic compounds having the formula ##STR1## wherein m is an integer having a value of from 1 to 4; R is alkylene having from 3 to 8 carbon atoms and is optionally substituted with C.sub.1 to C.sub.4 alkyl; R.sub.2 together with the quaternary nitrogen, forms a 5 to 14 membered heterocyclic ring, said ring containing at least 2 hetero atoms selected from the group of nitrogen, sulfur and oxygen; R.sub.1 forms a double bond in the heterocyclic ring of the quaternized nitrogen or is alkyl, alkyleneoxyalkyl, alkylhydroxy, aryl, aralkyl, aralkenyl, alkaryl, alkylamidoalkyl and X.sup.- is an anion. The invention also relates to the preparation and use of said quaternized polycyclic compounds.
    Type: Grant
    Filed: March 1, 1989
    Date of Patent: May 5, 1992
    Assignee: ISP Investments Inc.
    Inventors: Ratan K. Chaudhuri, David J. Tracy, Robert B. Login, Michael W. Helioff
  • Patent number: 5093031
    Abstract: The invention relates to properties and uses of N-hydrocarbon substituted lactams, particularly N-alkyl substituted lactams having the formula ##STR1## wherein R' is a hydrophobic radical such as linear or branched chain alkyl group containing from 8 to 27 carbon atoms, most preferably micelle forming pyrrolidones having 12 to 16 carbon atoms in the R' group. The invention particularly relates to the uses of the N-hydrocarbon substituted lactams which involve surfactant properties, such as solubility, wetting, viscosity building, emulsifying and/or complexing properties.
    Type: Grant
    Filed: October 14, 1988
    Date of Patent: March 3, 1992
    Assignee: ISP Investments Inc.
    Inventors: Robert B. Login, Ratan K. Chaudhuri, Rama K. Haldar, Mohamed M. Hashem, Michael W. Helioff, David J. Tracy
  • Patent number: 5011941
    Abstract: The invention relates primarily to quaternized compounds having the formula ##STR1## wherein n and n' are each independently integers having a value of from 1 to 25; p is an integer having a value of from 1 to 4; Y and Y' are each independently H or CH.sub.3 ; R is linear alkyl, alkenyl, or amidoalkyl having from 8 to 22 carbon atoms and is optionally substituted with C.sub.1 to C.sub.4 alkyl; Z is linear alkylene having from 3 to 8 carbon atoms and is optionally substituted with lower alkyl and A.sup.- is an anion.
    Type: Grant
    Filed: September 14, 1990
    Date of Patent: April 30, 1991
    Assignee: GAF Chemicals Corporation
    Inventors: Ratan K. Chaudhuri, David J. Tracy, Robert B. Login
  • Patent number: 5008104
    Abstract: The invention relates primarily to quaternized compounds having the formula ##STR1## wherein n and n' are each independently integers having a value of from 1 to 25; p is an integer having a value of from 1 to 4; Y and Y' are each independently H or CH.sub.3 ; R is linear alkyl, alkenyl, or amidoalkyl having from 8 to 22 carbon atoms and is optionally substituted with C.sub.1 to C.sub.4 alkyl; Z is linear alkylene having from 3 to 8 carbon atoms and is optionally substituted with lower alkyl and A.sup.- is an anion.
    Type: Grant
    Filed: June 22, 1989
    Date of Patent: April 16, 1991
    Assignee: GAF Chemicals Corporation
    Inventors: Ratan K. Chaudhuri, David J. Tracy, Robert B. Login
  • Patent number: 4886890
    Abstract: This invention relates to quaternary compounds having the formula ##STR1## wherein W.sup.- is an anion; m and n are integers having a value of from 1 to 4; R is alkylene having from 3 to 8 carbon atoms; R.sub.1 is a radical having from 8 to 25 carbon atoms and is selected from the group of alkyl, alkenyl and alkoxy alkylene and each of R.sub.2, R.sub.3 and R.sub.4 is a radical having from 1 to 25 carbon atoms and is alkyl, alkoxy or ##STR2## where p has a value of from 1 to 4 and X is hydrogen or methyl. The invention also relates to the preparation and use of said diquaternized compounds.
    Type: Grant
    Filed: September 29, 1988
    Date of Patent: December 12, 1989
    Assignee: GAF Corporation
    Inventors: Ratan K. Chaudhuri, David J. Tracy, Robert B. Login
  • Patent number: 4885371
    Abstract: The present invention relates to a process for the selective preparation of an N-alkyl lactam having minimal coloration by reacting the corresponding lactone with an alkyl amine in the presence of a catalytic amount of an ammonium, alkali metal or alkaline earth metal borohydride.
    Type: Grant
    Filed: June 22, 1989
    Date of Patent: December 5, 1989
    Assignee: GAF Chemicals Corporation
    Inventors: David J. Tracy, Mohamed M. Hashem
  • Patent number: 4885158
    Abstract: The invention relates primarily to quaternized compounds having the formula ##STR1## wherein m is an integer having a value of from 1 to 4; R is alkylene having from 3 to 8 carbon atoms and is optionally substituted with C.sub.1 to C.sub.4 alkyl; R.sub.1, R.sub.2 and R.sub.3 are each independently selected from the group of alkyl, alkyloxyalkyl, alkyloxyalkenyl, hydroxyalkyl, aryl, aralkyl, alkaryl, alkyl amidoalkyl, alkyl carbamoylalkyl, aryl amido alkyl and aryl carbamoyalkyl radicals, and R.sub.2 and R.sub.3, together with the quaternized nitrogen atom can form a heterocyclic radical containing from 1 to 2 heteroatoms selected from the group of nitrogen, sulfur and oxygen, in which case R.sub.1 can represent a double bond in the heterocyclic structure or can be any of the aforementioned groups for R.sub.1, R.sub.2 and R.sub.3 ; said groups R.sub.1, R.sub.2 and R.sub.3 each having from 1 to 30 carbon atoms and at least one of R.sub.1, R.sub.2 and R.sub.3 is a radical having from 8 to 30 carbon atoms when R.
    Type: Grant
    Filed: April 29, 1988
    Date of Patent: December 5, 1989
    Assignee: GAF Corporation
    Inventors: David J. Tracy, Thomas Rizzo, Robert B. Login
  • Patent number: 4883655
    Abstract: The invention relates primarily to quaternized polycyclic compounds having the formula ##STR1## wherein m is an integer having a value of from 1 to 4; R is alkylene having from 3 to 8 carbon atoms and is optionally substituted with C.sub.1 to C.sub.4 alkyl; R.sub.2 together with the quaternary nitrogen, forms a 5 to 14 membered heterocyclic ring, said ring containing from 1 to 2 hetero atoms selected from the group of nitrogen, sulfur and oxygen; R.sub.1 forms a double bond in the heterocyclic ring of the quaternized nitrogen or is alkyl, alkyleneoxyalkyl, alkylhydroxy, aryl, aralkyl, aralkenyl, alkaryl, alkylamidoalkyl and X.sup.- is a chloride, bromide or iodide anion. The invention also relates to the preparation and use of said quaternized polycyclic compounds.
    Type: Grant
    Filed: August 28, 1987
    Date of Patent: November 28, 1989
    Assignee: GAF Corporation
    Inventors: Robert B. Login, Ratan K. Chaudhuri, David J. Tracy, Michael W. Helioff
  • Patent number: 4842858
    Abstract: A stable iodine complex formed from the association of iodine with a pyrrolidonyl surfactant and its use in therapeutic, environmental and industrial applications and particularly as low foaming disinfectants for gradual release of iodine over significantly extended periods.
    Type: Grant
    Filed: December 11, 1987
    Date of Patent: June 27, 1989
    Assignee: GAF Corporation
    Inventors: David J. Tracy, Mohamed M. Hashem, Robert B. Login
  • Patent number: 4837013
    Abstract: The invention relates primarily to quaternized compounds having the formula ##STR1## wherein m is an integer having a value of from 1 to 4; R is alkylene having from 3 to 8 carbon atoms and is optionally substituted with C.sub.1 to C.sub.4 alkyl; R.sub.4 is alkylene having from 1 to 4 carbon atoms, phenyl or naphthyl optionally substituted with lower alkyl; Y is ##STR2## wherein R.sub.6 is hydrogen or lower alkyl; R.sub.7 is alkyl of from 1 to 30 carbon atoms; R.sub.2 and R.sub.3 are each independently selected from the group of --R.sub.4 --Y--R.sub.7 alkyl, alkyleneoxyalkyl, alkylhydroxy, aryl, aralkyl, aralkenyl, alkaryl, and alkyleneamidoalkyl radicals, said groups each having from 1 to 30 carbon atoms and at least one of R.sub.7, R.sub.2 and R.sub.3 having at least 8 carbon atoms and X.sup.-- is a chloride, bromide or iodide anion. The invention also relates to the preparation and use of said quaternized compounds.
    Type: Grant
    Filed: August 28, 1987
    Date of Patent: June 6, 1989
    Assignee: GAF Corporation
    Inventors: Robert B. Login, Ratan K. Chaudhuri, David J. Tracy, Michael W. Helioff
  • Patent number: 4834970
    Abstract: The invention relates primarily to quaternized compounds having the formula ##STR1## wherein m is an integer having a value of from 1 to 4; R is alkylene having from 3 to 8 carbon atoms and is optionally substituted with C.sub.1 to C.sub.4 alkyl; R.sub.1, R.sub.2 and R.sub.3 are each independently selected from the group of alkyl, alkyl oxide, alkylhydroxy, alkoxy, aryl, aralkyl, alkaryl, and alkyl amidoalkyl radicals, said groups each having from 1 to 30 carbon atoms and at least one of R.sub.1, R.sub.2 and R.sub.3 is a radical having from 8 to 30 carbon atoms; and X.sup.- is a chloride, bromide or iodide anion. The invention also relates to the preparation and use of said quaternized compounds.
    Type: Grant
    Filed: June 29, 1987
    Date of Patent: May 30, 1989
    Assignee: GAF Corporation
    Inventors: Robert B. Login, Ratan K. Chaudhuri, David J. Tracy, Michael W. Helioff
  • Patent number: 4830851
    Abstract: A stable iodine complex formed from the association of iodine with a pyrrolidonyl surfactant and its use in therapeutic, environmental and industrial applications and particularly as low foaming disinfectants for gradual release of iodine over significantly extended periods.
    Type: Grant
    Filed: March 3, 1987
    Date of Patent: May 16, 1989
    Assignee: GAF Corporation
    Inventors: David J. Tracy, Mohamed M. Hashem, Robert B. Login
  • Patent number: 4830850
    Abstract: The invention relates primarily to quaternized compounds having the formula ##STR1## wherein m and p are each integers having a value of from 1 to 4; R is alkylene having from 3 to 8 carbon atoms and is optionally substituted with C.sub.1 to C.sub.4 alkyl; R.sub.1 is alkyl or alkenyl having from 1 to 30 carbon atoms; R.sub.2 and R.sub.3 are each independently selected from the group of --(CH.sub.2).sub.p OR.sub.1, alkyl, alkylhydroxy, aryl, aralkyl, aralkenyl, alkaryl, and alkylene amidoalkyl radicals, said R.sub.2 and R.sub.3 groups having from 1 to 30 carbon atoms and at least one of R.sub.1, R.sub.2 and R.sub.3 is a radical having from 8 to 30 carbon atoms; and X.sup.- is a chloride, bromide or iodide anion. The invention also relates to the preparation and use of said quaternized compounds.
    Type: Grant
    Filed: August 28, 1987
    Date of Patent: May 16, 1989
    Assignee: GAF Corporation
    Inventors: Robert B. Login, Ratan K. Chaudhuri, David J. Tracy, Michael W. Helioff
  • Patent number: 4806609
    Abstract: (1) Pyrrolidonyl acrylate block polymers having the formula ##STR1## wherein n has a value of 1 to 3; X and X' are dissimilar and each is hydrogen or methyl; y and z each have a value of from 1 to 40, except that at least one of y and z is greater than 1 and R is hydrogen or methyl;(2) preparation of said polymers and(3) uses of said polymers.
    Type: Grant
    Filed: April 18, 1988
    Date of Patent: February 21, 1989
    Assignee: GAF Corporation
    Inventors: David J. Tracy, Mohamed M. Hashem, Fulvio J. Vara