Patents by Inventor Kolazi S. Narayanan

Kolazi S. Narayanan 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: 5229354
    Abstract: This invention relates to inhibiting leaching of crop treating chemicals into the ground water, aqua-system and surrounding soil of the treatment site by contacting the plant or plant site with an effective leach inhibiting, plant tolerating amount of a nitrogen-containing copolymer having pendant nitrogeneous groups which contains between about 40 and about 98 wt. % of monomer unit A defined by the formula ##STR1## and 2 to 40 wt. % of comonomer unit B ##STR2## wherein X is hydrogen, a C.sub.1 to C.sub.22 radical of the group alkyl, alkoxy, aryl, alkaryl, aryloxy and alkaryloxy;R.sub.2 is hydrogen or --(CO).sub.y' OR';R, R.sub.1, R.sub.3 and R' are each selected from the group of hydrogen and lower alkyl;R.sub.6 is hydrogen or ##STR3## x, y, y' and z each have a value of 0 or 1; a has a value of from 2 to 4;Z is --O-- or --NH--Y is an optionally quaternized group of ##STR4## and R.sub.4 and R.sub.5 are hydrogen or lower alkyl except that at least one of R.sub.4 and R.sub.5 is lower alkyl.
    Type: Grant
    Filed: February 28, 1992
    Date of Patent: July 20, 1993
    Assignee: ISP Investments Inc.
    Inventors: Kolazi S. Narayanan, Ratan K. Chaudhuri
  • Patent number: 5229355
    Abstract: This invention relates to inhibiting leaching of crop treating chemicals into the ground water, aqua-system and surrounding soil of the treatment site by contacting the plant or plant site with an effective leach inhibiting, plant tolerating amount of a copolymer of a maleic acid, the corresponding C.sub.1 to C.sub.6 alkyl ester of said acid or a mixture thereof and a comonomer of an alkyl alpha alkenyl ether; which copolymers have a molecular weight (Mw) of from about 8,000 to about 3,000,000 and can be directly incorporated into a standard agrichemical formulation.
    Type: Grant
    Filed: February 28, 1992
    Date of Patent: July 20, 1993
    Assignee: ISP Investments Inc.
    Inventors: Ratan K. Chaudhuri, Kolazi S. Narayanan
  • Patent number: 5227509
    Abstract: A method for preparing (R)X.sub.m-p A.sub.p by reacting (R)X.sub.m and MA in N-methylpyrrolidone and recovering the by-product MX as a precipitate wherein:X is halide;R contains from 1 to 8 carbon atoms, can be substituted or unsubstituted, and is straight or branched chain alkyl, cycloaliphatic, aralkyl, alkylene, alkenyl, alkenylene, alkynyl or alkynylene with the proviso that X is not attached to a carbon atom having a double bond;A.sup.- is a monovalent anion soft base selected from the group consisting of halide different from X, SCN.sup.-, SH.sup.-, SO.sub.3 H.sup.-, R.sub.2 PO.sub.4.sup.-, PF.sub.6.sup.-, and [SP(Z) (OR.sup.1).sub.2 ].sup.- wherein R.sup.1 is lower alkyl and z i sulfur or oxygen;M is an alkali metal or NH.sub.4.sup.+ ;m is an integer from 1 to 3 with the proviso that m is 1 or 2 when R has one carton; andP is an integer from 1 to m.
    Type: Grant
    Filed: May 7, 1990
    Date of Patent: July 13, 1993
    Assignee: ISP Investments Inc.
    Inventors: Kolazi S. Narayanan, Paul D. Taylor
  • Patent number: 5227533
    Abstract: This invention relates to the alk-1-enyl ether having the formula ##STR1##
    Type: Grant
    Filed: April 13, 1992
    Date of Patent: July 13, 1993
    Assignee: ISP Investments Inc.
    Inventors: Jeffrey S. Plotkin, Kolazi S. Narayanan, Paul D. Taylor
  • Patent number: 5225606
    Abstract: This invention relates to the alk-1-enyl ether reaction product of a hydroxylated compound and an alk-1-enyloxy oxirane containing from 0 to 95% alkyl epoxide.
    Type: Grant
    Filed: June 10, 1991
    Date of Patent: July 6, 1993
    Assignee: Isp Investments Inc.
    Inventors: Jeffrey S. Plotkin, Kolazi S. Narayanan, Paul D. Taylor
  • Patent number: 5221791
    Abstract: This invention relates to hydrolysis resistant, water-soluble ammonium salt solids which are biologically active and which are described by the formula ##STR1## wherein m has a value of from 1 to 3; n has a value of from 1 to 4 and is equal to the free valences in anion R; p has a value of from 1 to 3; R.sub.1, R.sub.2 and R.sub.3 are each independently selected from the group of hydrogen, and C.sub.1 to C.sub.2 alkyl; R.sub.5 and R.sub.6 are each independently selected from the group of hydrogen, hydroxyalkyl and alkoxyalkyl radicals having from 1 to 10 carbon atoms and R is the anion of a biologically active, water-insoluble anion having at least 1 deprotonized hydrogen and is derived from a biologically active, acidic, organic compound selected from the group of a carboxylic, thiocarbonic, sulfonic, sulfinic, thiosulfonic, thioacid, mono- and di- thiophosphate and phosphorous containing acid, having a pKa* value less than 5.
    Type: Grant
    Filed: May 24, 1991
    Date of Patent: June 22, 1993
    Assignee: ISP Investments Inc.
    Inventors: Kolazi S. Narayanan, Ratan K. Chaudhuri, Robert B. Login
  • Patent number: 5217640
    Abstract: A method is provided herein which is particularly effective for removing or stripping varnish and paint from surfaces such as wood or metal which comprises activating NMP and/or BLO with about 1-30% by weight of an activator compound which is ethyl 3-ethoxypropionate (EEP).
    Type: Grant
    Filed: October 11, 1991
    Date of Patent: June 8, 1993
    Assignee: Verona Inc.
    Inventors: Kolazi S. Narayanan, Frank Fusiak
  • Patent number: 5206386
    Abstract: N-substituted cyclic lactam esters are made from biologically active organic acids and N-haloalkyl substituted cyclic lactam, preferably N-chloromethyl pyrrolidone. Such esters provide slow release of the organic acids in situ through slow hydrolysis of the ester to release the organic acid and the N-alkyl substituted cyclic lactam. The esters are useable for delivering a large variety of biologically active organic acids in slow release fashion to target organisms and promote effective long term therapeutic treatment. In particular, an ester made from acetyl salicyclic acid and chloromethyl pyrrolidone provides a vehicle for dermal penetration and slow release of aspirin for long term treatment.
    Type: Grant
    Filed: March 20, 1991
    Date of Patent: April 27, 1993
    Assignee: ISP Investments Inc.
    Inventors: Kolazi S. Narayanan, Paul D. Taylor
  • Patent number: 5200437
    Abstract: This invention relates to coating compositions containing the alk-1-enyl ether reaction product of a hydroxylated compound, an alk-1-enyloxy oxirane and from 0 to 95% of an alkyl epoxide.
    Type: Grant
    Filed: January 6, 1992
    Date of Patent: April 6, 1993
    Assignee: ISP Investments Inc.
    Inventors: James A. Dougherty, Fulvio J. Vara, Jeffrey S. Plotkin, Paul D. Taylor, Kolazi S. Narayanan
  • Patent number: 5176736
    Abstract: An emulsifiable concentrate comprising an agriculturally active chemical, a surfactant, an organic diluent and a solvent having first and second components, the first component being capable of solubilizing the agriculturally active chemical and the second component in conjunction with the surfactant being effective to disperse the agriculturally active chemical. The inventive concentrate allows for high concentrations of the active ingredient, exhibits excellent stability and produces highly stable compositions upon dilution with water.
    Type: Grant
    Filed: November 4, 1991
    Date of Patent: January 5, 1993
    Assignee: ISP Investments Inc.
    Inventors: Kolazi S. Narayanan, Ratan K. Chaudhuri, Manilal Dahanayake
  • Patent number: 5160528
    Abstract: An emulsifiable concentrate comprising an agriculturally active chemical, a surfactant, an organic diluent and a solvent having a component capable of solubilizing the agriculturally active chemical and, in conjunction with the surfactant, being effective to disperse the agriculturally active chemical. The inventive concentrate allows for high concentrations of the active ingredient, exhibits excellent stability and produces highly stable compositions upon dilution with water.
    Type: Grant
    Filed: April 5, 1990
    Date of Patent: November 3, 1992
    Assignee: ISP Investments Inc.
    Inventors: Ratan K. Chaudhuri, Kolazi S. Narayanan, Manilal Dahanayake
  • Patent number: 5159098
    Abstract: The invention relates to alk-1-enyloxy carbamates selected from the group having the formulae ##STR1## wherein R is a saturated or unsaturated, monovalent or divalent hydrocarbon radical having from 1 to 50 carbon atoms and is optionally substituted with halo, alkyleneoxy, hydroxy, or a combination of said radicals; Y is --O-- or --OCO--O--; X is hydrogen or methyl; R' and R" are each independently hydrogen, alkyl, aryl, aralkyl or alkaryl; m has a value of from 2 to 6 and n has a value of from 0 to 25. The invention also relates to the use of these alk-1-enyloxy carbamates as reactive diluents in cationically induced radiation curing of epoxy, vinyl ether, urethane monomers or oligomers and others.
    Type: Grant
    Filed: September 10, 1990
    Date of Patent: October 27, 1992
    Assignee: ISP Investments Inc.
    Inventors: Jeffrey S. Plotkin, Kolazi S. Narayanan
  • Patent number: 5156666
    Abstract: An emulsifiable concentrate comprising an agriculturally active chemical, a surfactant, and a solvent selected from the group consisting of a first component capable of solubilizing the agriculturally active chemical, a second component capable, in conjnction with the surfactant, to disperse the agriculturally active chemical, and combinations thereof, said first and second being biodegradeable. The inventive concentrate allows for high concentrations of the active ingredient, exhibits excellent stability and produces highly stable compositions upon dilution with water.
    Type: Grant
    Filed: June 28, 1990
    Date of Patent: October 20, 1992
    Assignee: ISP Investments Inc.
    Inventors: Kolazi S. Narayanan, Ratan K. Chaudhuri, Manilal Dahanayake
  • Patent number: 5154848
    Abstract: A method is provided herein which is particularly effective for removing or stripping varnish and paint from surfaces such as wood or metal which comprises activating NMP and/or BLO with about 1-30% by weight of an activator compound which is ethyl 3-ethoxypropionate (EEP).
    Type: Grant
    Filed: October 11, 1991
    Date of Patent: October 13, 1992
    Assignee: Verona Inc.
    Inventors: Kolazi S. Narayanan, Frank Fusiak
  • Patent number: 5098592
    Abstract: A method is provided herein which is particularly effective for removing or stripping varnish and paint from surfaces such as wood or metal which comprises activating NMP and/or BLO with about 1-30% by weight of an activator compound which is ethyl 3-ethoxypropionate (EEP).
    Type: Grant
    Filed: October 1, 1990
    Date of Patent: March 24, 1992
    Assignee: Creative Technologies Group, Inc.
    Inventors: Kolazi S. Narayanan, Frank Fusiak
  • Patent number: 5094917
    Abstract: Subject invention relates to alk-1-enyl ether silicates having the formula[X].sub.4-n Si[OR.sub.1 OCH.dbd.CH--R.sub.2 ].sub.nwherein X is halogen or --OR wherein R is lower alkyl or a mixture of halogen and OR, a mixture of OR and hydrogen or a mixture of halogen and hydrogen;R.sub.1 contains from 1 to 8 carbon atoms and is alkylene, alkenylene, alkynylene, optionally alkoxylated with up to 20 units of ##STR1## wherein Y is hydrogen or methyl and R.sub.2 is each hydrogen or lower alkyl and n has a value of from 1 to 4. The invention also relates to the process for preparing the above vinyl ether silicates and to their use as chemically resistant coatings.
    Type: Grant
    Filed: March 20, 1991
    Date of Patent: March 10, 1992
    Assignee: ISP Investments Inc.
    Inventors: Fulvio J. Vara, James A. Dougherty, Jeffrey S. Plotkin, Kolazi S. Narayanan, Paul D. Taylor
  • Patent number: 5085795
    Abstract: What is provided herein is a water-based, environmentally safe, stain-remover composition for effectively removing a wide variety of stains from fabrics consisting essentially of:(a) 5-20% by weight N-methylpyrrolidone (NMP),(b) 5-20% by weight .gamma.-butyrolactone (BLO),(c) 40-88% by weight water, and(d) 1-10% by weight surfactant, and, optionally,including a base-buffer to provide a pH in the range of about 7-11.
    Type: Grant
    Filed: February 21, 1991
    Date of Patent: February 4, 1992
    Assignee: ISP Investments Inc.
    Inventors: Kolazi S. Narayanan, Paul D. Taylor
  • Patent number: 5071463
    Abstract: An emulsifiable concentrate comprising an agriculturally active chemical, a surfactant, an organic diluent and a solvent having first and second components, the first component being capable of solubilizing the agriculturally active chemical and the second component in conjunction with the surfactant being effective to disperse the agriculturally active chemical. The inventive concentrate allows for high concentrations of the active ingredient, exhibits excellent stability and produces highly stable compositions upon dilution with water.
    Type: Grant
    Filed: December 11, 1989
    Date of Patent: December 10, 1991
    Assignee: ISP Investments Inc.
    Inventors: Kolazi S. Narayanan, Ratan K. Chaudhuri, Manilal Dahanayake
  • Patent number: 5049300
    Abstract: Acidified N-methyl-2-pyrrolidone (NMP) is activated with 1-20% by weight of ethyl 3-ethoxypropionate (EEP) to provide an effective composition for removal of both uncured and cured paints from wood and metal surfaces.
    Type: Grant
    Filed: October 1, 1990
    Date of Patent: September 17, 1991
    Assignee: Creativity Technologies Group, Inc.
    Inventors: Frank Fusiak, Kolazi S. Narayanan
  • Patent number: 5039716
    Abstract: Subject invention relates to alk-1-enyl ether silicates having the formula[X].sub.4-n Si[OR.sub.1 OCH.dbd.CH--R.sub.2 ].sub.nwhereinX is halogen or --OR wherein R is lower alkyl or a mixture of halogen and OR, a mixture of OR and hydrogen or a mixture of halogen and hydrogen;R.sub.1 contains from 1 to 8 carbon atoms and is alkylene, alkenylene, alkynylene, optionally alkoxylated with up to 20 units of ##STR1## wherein Y is hydrogen or methyl and R.sub.2 is each hydrogen or lower alkyl and n has a value of from 1 to 4. The invention also relates to the process for preparing the above vinyl ether silicates and to their use as chemically resistant coatings.
    Type: Grant
    Filed: January 26, 1990
    Date of Patent: August 13, 1991
    Assignee: GAF Chemicals Corporation
    Inventors: Fulvio J. Vara, James A. Dougherty, Jeffrey S. Plotkin, Kolazi S. Narayanan, Paul D. Taylor