Patents by Inventor Krishnan Tamareselvy

Krishnan Tamareselvy 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: 7423082
    Abstract: Thiocarbonate compounds which, in one embodiment, are utilized as a rheology modifier or associative thickener. The thiocarbonate compounds thicken or increase the viscosity of a composition, preferably an aqueous composition when used in an effective amount. In one preferred embodiment, the thiocarbonate compounds include at least one hydrophilic group containing repeat unit such as derived from acrylic acid, and at least one hydrophobic group to enhance association with other compounds and thus increase viscosity of a composition. Aqueous composition comprising a latex and thiocarbonate associative thickeners are described.
    Type: Grant
    Filed: August 18, 2005
    Date of Patent: September 9, 2008
    Assignee: Lubrizol Advanced Materials, Inc.
    Inventors: John Ta-Yuan Lai, Shui-Jen Raymond Hsu, Krishnan Tamareselvy
  • Patent number: 7378479
    Abstract: Disclosed are multi-purpose polymers that are the polymerization product of a monomer mixture comprising at least one amino-substituted vinyl monomer; at least one nonionic vinyl monomer; at least one associative vinyl monomer; at least one semihydrophobic vinyl surfactant monomer; and, optionally, comprising one or more hydroxy-substituted nonionic vinyl monomer, crosslinking monomer, chain transfer agent or polymeric stabilizer. These vinyl addition polymers have a combination of substituents, including amino substituents that provide cationic properties at low pH, hydrophobic substituents, hydrophobically modified polyoxyalkylene substituents, and hydrophilic polyoxyalkylene substituents. The polymers provide surprisingly beneficial rheological properties in acidic aqueous compositions, and are compatible with cationic materials. The multi-purpose polymers are useful in a variety of products for personal care, health care, household care, institutional and industrial care, and industrial applications.
    Type: Grant
    Filed: August 22, 2003
    Date of Patent: May 27, 2008
    Assignee: Lubrizol Advanced Materials, Inc.
    Inventors: Krishnan Tamareselvy, Thomas A. Barker, James E. Mullee, Charles T. Greenslade, Julie F. Schmucker-Castner, Deborah S. Filla
  • Publication number: 20080113895
    Abstract: A method for increasing the efficacy of hydrophobically modified (meth)acrylic based polymers to increase the critical micelle concentration of a surfactant composition by attenuating the degree of neutralization (DN) of the polymer is disclosed.
    Type: Application
    Filed: November 9, 2007
    Publication date: May 15, 2008
    Inventors: Krishnan Tamareselvy, William F. Masler, Deborah S. Filla, Gary Gray
  • Publication number: 20080112913
    Abstract: Provided are compositions comprising a low molecular weight, non-crosslinked, linear acrylic copolymer and at least one surfactant selected from the group consisting of anionic surfactants, amphoteric surfactants, and combinations of two or more thereof, and methods of using such compositions.
    Type: Application
    Filed: November 9, 2006
    Publication date: May 15, 2008
    Inventors: Joseph J. Librizzi, Russel M. Walters, Michael Fevola, Krishnan Tamareselvy
  • Publication number: 20080045646
    Abstract: Disclosed are multi-purpose alkali-swellable and alkali soluble associative polymers, which are the polymerization product of a monomer mixture comprising: (a) at least one acidic vinyl monomer; (b) at least one nonionic vinyl monomer; (c) a first associative monomer having a first hydrophobic end group; (d) a monomer selected from the group consisting of a second associative monomer having a second hydrophobic end, a semihydrophobic monomer and a combination thereof; and, optionally, (e) one or more crosslinking monomers or chain transfer agents. When monomer (d) is an associative monomer, the first and second hydrophobic end groups of monomers (c) and (d) have significantly different hydrophobic and/or steric character from one another. The multi-purpose associative polymers surprisingly provide desirable rheological and aesthetic properties in aqueous media.
    Type: Application
    Filed: October 22, 2007
    Publication date: February 21, 2008
    Inventors: Krishnan Tamareselvy, Thomas Barker, Pravinchandra Shah, Kittie Ramey
  • Publication number: 20080014160
    Abstract: The present invention relates to antiperspirant compositions comprising a cationic hydrophobically modified polymeric gelling agent and an acidic antiperspirant compound. The antiperspirant compositions are transparent, phase stable, non-whitening and non-staining to the skin and clothing following topical application. The present invention also is directed to methods of using the antiperspirant compositions.
    Type: Application
    Filed: September 17, 2007
    Publication date: January 17, 2008
    Inventors: David Faivre, Pinky Purohit, Krishnan Tamareselvy, Duane Krzysik, Dorina Ghirardi, Alan Suares
  • Publication number: 20080004340
    Abstract: This invention relates to cationically derivatized polycalactomannans obtained from cassia tora and cassia obtusifolia and to their use in personal care, household care, and institutional care compositions.
    Type: Application
    Filed: August 23, 2007
    Publication date: January 3, 2008
    Inventors: Ferdinand Utz, Carole Lepilleur, Krishnan Tamareselvy, Joseph Chiarelli, Julie Schmucker-Castner, Michael Myers, Daniel Hasman, Brian Vondruska, William Wilber, Hong Luo, Nancy Marchant, Francine Shuster
  • Patent number: 7288616
    Abstract: Disclosed are multi-purpose alkali-swellable and alkali soluble associative polymers, which are the polymerization product of a monomer mixture comprising: (a) at least one acidic vinyl monomer; (b) at least one nonionic vinyl monomer; (c) a first associative monomer having a first hydrophobic end group; (d) a monomer selected from the group consisting of a second associative monomer having a second hydrophobic end, a semihydrophobic monomer and a combination thereof; and, optionally, (e) one or more crosslinking monomers or chain transfer agents. When monomer (d) is an associative monomer, the first and second hydrophobic end groups of monomers (c) and (d) have significantly different hydrophobic and/or steric character from one another. The multi-purpose associative polymers surprisingly provide desirable Theological and aesthetic properties in aqueous media.
    Type: Grant
    Filed: January 8, 2003
    Date of Patent: October 30, 2007
    Assignee: Lubrizol Advanced Materials, Inc.
    Inventors: Krishnan Tamareselvy, Thomas A. Barker, Pravinchandra K. Shah, Kittie L. Ramey
  • Publication number: 20070202069
    Abstract: Dimethicone copolyol polymers are synthesized from dimethicone copolyol macromers. Polymers containing the macromer repeating units are useful in a variety of applications including personal care, textile and industrial formulations to deliver softness, lubricity, fixative, humidity resistance, water repellency, gloss, surface modification, and surfactant properties.
    Type: Application
    Filed: February 22, 2007
    Publication date: August 30, 2007
    Inventors: Krishnan Tamareselvy, Thomas Barker, Deborah Filla, Aroop Kumar Roy, Carol Kyer, Denise Rafferty, Joseph Zellia, Regina Klump
  • Publication number: 20070203311
    Abstract: A polymerizable dimethicone copolyol macromer composition is synthesized by reacting itaconic anhydride with a dimethicone copolyol. During the reaction itaconic anhydride spontaneously isomerizes to citraconic anhydride which in turn is esterified by the dimethicone copolyol. The obtained macromers are copolymerizable with olefinically unsaturated monomers. Polymers containing the macromer repeating units are useful in a variety of applications including personal care, textile and industrial formulations to deliver softness, lubricity, fixative, water repellency, gloss, surface modification, and surfactant properties.
    Type: Application
    Filed: February 22, 2007
    Publication date: August 30, 2007
    Inventors: Aroop Kumar Roy, Krishnan Tamareselvy
  • Patent number: 7262157
    Abstract: This invention relates to cationically derivatized polycalactomannans obtained from cassia tora and cassia obtusifolia and to their use in personal care, household care, and institutional care compositions.
    Type: Grant
    Filed: June 18, 2004
    Date of Patent: August 28, 2007
    Assignee: Lubrizol Advanced Materials, Inc.
    Inventors: Ferdinand Utz, Carole A. Lepilleur, Krishnan Tamareselvy, Joseph A. Chiarelli, Julie F. Schmucker-Castner, Michael P. Myers, Daniel F. Hasman, Jr., Brian J. Vondruska, William R. Wilber, Hong Luo, Nancy S. Marchant, Francine Shuster
  • Patent number: 7153496
    Abstract: Disclosed are aqueous hair setting compositions comprising, as the sole hair fixative component, rheology modifying, hair setting, associative polymers (RMHS), which are the polymerization product of a monomer mixture comprising an acidic vinyl monomer; and an associative monomer. The hair setting compositions provide surprisingly good to excellent hair setting efficacy, based on high humidity curl retention. A wide range of rheological characteristics was achieved together with good clarity and aesthetic product properties. Particularly preferred rheology modifying hair setting associative polymers are certain hydrophobically modified alkali-swellable and alkali-soluble associative polymers (ASAP) and HASE polymers disclosed herein. Also disclosed are methods of setting hair using RMHS polymer-containing compositions.
    Type: Grant
    Filed: January 8, 2003
    Date of Patent: December 26, 2006
    Assignee: Noveon IP Holdings Corp.
    Inventors: Krishnan Tamareselvy, Kittie L. Ramey
  • Publication number: 20060251600
    Abstract: Disclosed are aqueous hair setting compositions comprising, as the sole hair fixative component, rheology modifying, hair setting, associative polymers (RMHS), which are the polymerization product of a monomer mixture comprising an acidic vinyl monomer; and an associative monomer. The hair setting compositions provide surprisingly good to excellent hair setting efficacy, based on high humidity curl retention. A wide range of rheological characteristics was achieved together with good clarity and aesthetic product properties. Particularly preferred rheology modifying hair setting associative polymers are certain hydrophobically modified alkali-swellable and alkali-soluble associative polymers (ASAP) and HASE polymers disclosed herein. Also disclosed are methods of setting hair using RMHS polymer-containing compositions.
    Type: Application
    Filed: July 6, 2006
    Publication date: November 9, 2006
    Inventors: Krishnan Tamareselvy, Kittie Ramey
  • Publication number: 20060039939
    Abstract: Thiocarbonate compounds which, in one embodiment, are utilized as a rheology modifier or associative thickener. The thiocarbonate compounds thicken or increase the viscosity of a composition, preferably an aqueous composition when used in an effective amount. In one preferred embodiment, the thiocarbonate compounds include at least one hydrophilic group containing repeat unit such as derived from acrylic acid, and at least one hydrophobic group to enhance association with other compounds and thus increase viscosity of a composition. Aqueous composition comprising a latex and thiocarbonate associative thickeners are described.
    Type: Application
    Filed: August 18, 2005
    Publication date: February 23, 2006
    Inventors: John Lai, Shui-Jen Hsu, Krishnan Tamareselvy
  • Publication number: 20050209428
    Abstract: A hair fixative composition containing a breathable polyurethane having an upright moisture vapor transmission rate (MVTR) of more than about 500 gms/m2/24 hr said polyurethane comprises: (a) poly(alkylene oxide) side-chain units in an amount comprising about 12 wt. % to about 80 wt. % of said polyurethane, wherein (i) alkylene oxide groups in said poly(alkylene oxide) side-chain units have from 2 to 10 carbon atoms and are unsubstituted, substituted, or both unsubstituted and substituted, (ii) at least about 50 wt. % of said alkylene oxide groups are ethylene oxide, and (iii) said amount of said side-chain units is (i) at least about 30 wt. % when the molecular weight of said side-chain units is less than about 600 grams/mole, (ii) at least about 15 wt. % when the molecular weight of said side-chain units is from about 600 to about 1,000 grams/mole, and at least about 12 wt.
    Type: Application
    Filed: May 18, 2005
    Publication date: September 22, 2005
    Inventor: Krishnan Tamareselvy
  • Publication number: 20050026794
    Abstract: This invention relates to cationically derivatized polycalactomannans obtained from cassia tora and cassia obtusifolia and to their use in personal care, household care, and institutional care compositions.
    Type: Application
    Filed: June 18, 2004
    Publication date: February 3, 2005
    Inventors: Ferdinand Utz, Carole Lepilleur, Krishnan Tamareselvy, Joseph Chiarelli, Julie Schmucker-Castner, Michael Myers, Daniel Hasman, Brian Vondruska, William Wilber, Hong Luo, Nancy Marchant, Francine Shuster
  • Publication number: 20040241130
    Abstract: Disclosed are multi-purpose polymers that are the polymerization product of a monomer mixture comprising at least one amino-substituted vinyl monomer; at least one nonionic vinyl monomer; at least one associative vinyl monomer; at least one semihydrophobic vinyl surfactant monomer; and, optionally, comprising one or more hydroxy-substituted nonionic vinyl monomer, crosslinking monomer, chain transfer agent or polymeric stabilizer. These vinyl addition polymers have a combination of substituents, including amino substituents that provide cationic properties at low pH, hydrophobic substituents, hydrophobically modified polyoxyalkylene substituents, and hydrophilic polyoxyalkylene substituents. The polymers provide surprisingly beneficial Theological properties in acidic aqueous compositions, and are compatible with cationic materials.
    Type: Application
    Filed: March 8, 2004
    Publication date: December 2, 2004
    Inventors: Krishnan Tamareselvy, Charles T. Greenslade, Julie F. Schmucker-Castner
  • Publication number: 20040052746
    Abstract: Disclosed are multi-purpose polymers that are the polymerization product of a monomer mixture comprising at least one amino-substituted vinyl monomer; at least one nonionic vinyl monomer; at least one associative vinyl monomer; at least one semihydrophobic vinyl surfactant monomer; and, optionally, comprising one or more hydroxy-substituted nonionic vinyl monomer, crosslinking monomer, chain transfer agent or polymeric stabilizer. These vinyl addition polymers have a combination of substituents, including amino substituents that provide cationic properties at low pH, hydrophobic substituents, hydrophobically modified polyoxyalkylene substituents, and hydrophilic polyoxyalkylene substituents. The polymers provide surprisingly beneficial rheological properties in acidic aqueous compositions, and are compatible with cationic materials. The multi-purpose polymers are useful in a variety of products for personal care, health care, household care, institutional and industrial care, and industrial applications.
    Type: Application
    Filed: August 22, 2003
    Publication date: March 18, 2004
    Inventors: Krishnan Tamareselvy, Thomas A. Barker, James E. Mullee, Charles T. Greenslade, Julie F. Schmucker-Castner, Deborah S. Filla
  • Publication number: 20030207988
    Abstract: Disclosed are multi-purpose alkali-swellable and alkali soluble associative polymers, which are the polymerization product of a monomer mixture comprising: (a) at least one acidic vinyl monomer; (b) at least one nonionic vinyl monomer; (c) a first associative monomer having a first hydrophobic end group; (d) a monomer selected from the group consisting of a second associative monomer having a second hydrophobic end, a semihydrophobic monomer and a combination thereof; and, optionally, (e) one or more crosslinking monomers or chain transfer agents. When monomer (d) is an associative monomer, the first and second hydrophobic end groups of monomers (c) and (d) have significantly different hydrophobic and/or steric character from one another. The multi-purpose associative polymers surprisingly provide desirable Theological and aesthetic properties in aqueous media.
    Type: Application
    Filed: January 8, 2003
    Publication date: November 6, 2003
    Inventors: Krishnan Tamareselvy, Thomas A. Barker, Pravinchandra K. Shah
  • Patent number: 6576702
    Abstract: Waterborne polyurethane dispersions are prepared by reacting (1) at least one polyisocyanate; (2) at least one active hydrogen containing compound, such as a polyol or a polyamide; and (3) preferably also at least one water-dispersability enhancing compound having water-dispersion enhancing groups, in order to form an isocyanate terminated prepolymer. The prepolymer subsequently is (1) optionally neutralized by reaction with at least one neutralizing agent, (2) dispersed in water, and then (3) chain extended by reaction with at least one of water, inorganic or organic polyamine having an average of about 2 or more primary and/or secondary amine groups, or combinations thereof. At least one plasticizer is introduced into the reaction mixture at any time during prepolymer formation or before the prepolymer is dispersed in water. The plasitcizer substantially or completely replaces other organic diluents or solvents. Various types of plasticizers may be employed, including reactive plasticizers.
    Type: Grant
    Filed: July 18, 2001
    Date of Patent: June 10, 2003
    Assignee: Noveon IP Holdings Corp.
    Inventors: Gary A. Anderle, Susan L. Lenhard, Alexander V. Lubnin, George E. Snow, Krishnan Tamareselvy