Patents by Inventor John C. Leighton
John C. Leighton 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: 7972589Abstract: The present invention relates to a hair fixative film, which contains a natural and/or synthetic polymer as the main component and a method of applying said film to hair. Such film is useful in maintaining a desired look and style of hair. Furthermore, the film is beneficial because it enables the combination of ingredients that are incompatible in other application forms.Type: GrantFiled: May 17, 2004Date of Patent: July 5, 2011Assignee: Akzo Nobel N.V.Inventors: John C. Leighton, Michael T. Philbin
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Patent number: 6359076Abstract: A carpet back coating composition which is an aqueous emulsion polymerization product of ethylene, vinyl acetate, and a ethylenically unsaturated hydroxy-functional monomer to form an emulsion copolymer which is combined with a crosslinking agent selected from the group consisting of multifunctional aziridine, multifunctional isocyanate, and multifunctional epoxide. Carpets prepared with the carpet back coating compositions exhibit improved wet strength. The improvement in wet strength is achieved by means of crosslinking reactions which do not generate volatile organic compounds as by-products.Type: GrantFiled: December 9, 1998Date of Patent: March 19, 2002Assignee: National Starch and Chemical Investment Holding CorporationInventors: David J. Lunsford, John C. Leighton
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Patent number: 5858549Abstract: (Hydroxyalkyl)urea crosslinking agents and compositions which utilize such crosslinking agents are disclosed. The crosslinking agents contain a single urea group, at least two hydroxyl groups, and have at least two carbon atoms disposed between the urea group and each of the hydroxyl groups. The compositions contain a poly-functional molecule which contains at least two functional groups selected from the group consisting of carboxyl, anhydride and amine.Type: GrantFiled: January 7, 1997Date of Patent: January 12, 1999Assignee: National Starch and Chemical Investment Holding CorporationInventors: Andrew J. Kielbania, Jr., Pravin Kukkala, Sharon Lee, John C. Leighton
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Patent number: 5632977Abstract: The present invention relates to hair care compositions which contain a polymer which is prepared from N-vinyl formamide (NVF) monomer and the use of those hair care compositions to treat hair. The polymer may be a homopolymer of NVF or an interpolymer of NVF and at least one vinyl monomer. The polymer is present in amounts effective to provide the hair care compositions with hair fixative properties and/or hair conditioning properties.Type: GrantFiled: August 3, 1995Date of Patent: May 27, 1997Assignee: National Starch and Chemical Investment Holding CorporationInventors: Rama S. Chandran, Jean-Pierre Leblanc, John C. Leighton, Gary T. Martino
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Patent number: 5609857Abstract: The present invention relates to hair conditioning compositions which utilize as a hair conditioning additive a water-soluble polymer in amounts effective to impart hair conditioning properties to the hair conditioning composition, wherein the polymer contains the residue of N-vinyl formamide and the residue of at least one vinyl polymerizable moiety which contains an amine selected from the group consisting of secondary, tertiary and quaternary amines. The conditioning composition also includes one or more ingredients such as conditioning agents, emulsifiers, viscosity modifiers, gelling agents, opacifiers, stabilizers, preservatives, sequestering agents, chellating agents, pearling agents, clarifying agents, fragrances, colorants, and propellants; and water. The invention also relates to methods of conditioning hair.Type: GrantFiled: April 5, 1995Date of Patent: March 11, 1997Assignee: National Starch and Chemical Investment Holding CorporationInventors: Rama S. Chandran, Jean-Pierre Leblanc, John C. Leighton, Gary T. Martino
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Patent number: 5501851Abstract: Hair fixative carboxylated polymers are stabilized in an aqueous emulsion by neutralization with a cosmetically acceptable organic or inorganic base, require no organic solvent, no propellant when dispensed in non-aerosol containers, and minimal organic propellant when dispensed in aerosol containers.Type: GrantFiled: September 12, 1994Date of Patent: March 26, 1996Assignee: National Starch and Chemical Investment Holding CorporationInventors: Paul R. Mudge, John C. Leighton, Sirisoma Wanigatunga, Natalie Morawsky
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Patent number: 5478553Abstract: The present invention relates to hair fixative compositions which utilize as the hair fixative resin a polymer which is prepared from N-vinyl formamide (NVF). The polymer may be a homopolymer of NVF or an interpolymer of NVF and at least one vinyl monomer(s). The polymer is present in amounts effective to provide the inventive hair fixative compositions with hair fixative properties. In preferred embodiments, the hair fixative composition is a stable, aqueous gel which forms a clear, non-tacky film upon drying. In certain embodiments, the gel has a rheology effective to allow the gel to be applied to the hair via a spray pump.Type: GrantFiled: August 5, 1994Date of Patent: December 26, 1995Assignee: National Starch and Chemical Investment Holding CorporationInventors: Rama S. Chandran, Jean-Pierre Leblanc, John C. Leighton, Gary T. Martino
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Patent number: 5416127Abstract: This invention is a hot melt pressure sensitive adhesive formed by copolymerizing acrylic, or a combination of acrylic and vinyl, monomers with the functional monomer, 1-(1-isocyanato-1-methyl ethyl)-3-(1-methyl ethenyl)benzene m-TMI, to give a saturated polymer with pendant vinyl groups that are crosslinked by UV or EB radiation.Type: GrantFiled: January 26, 1994Date of Patent: May 16, 1995Assignee: National Starch and Chemical Investment Holding CorporationInventors: Rama Chandran, Roopram Ramharack, Irwin J. Davis, John C. Leighton
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Patent number: 5415926Abstract: In a process for the preparation of N-alkylol amide monomers wherein a polymerizable amide is reacted with an aldehyde, the improvement which comprises adjusting the pH of the resulting N-alkylol amide monomer to pH 10-11 and adding thereto an alkali or alkali earth metal borohydride at a temperature of -10.degree. to 20.degree. C. so as to convert the residual free aldehyde in the equilibrium mixture to the corresponding alcohol.Type: GrantFiled: February 25, 1993Date of Patent: May 16, 1995Assignee: National Starch and Chemical Investment Holding CorporationInventors: John C. Leighton, Rama S. Chandran
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Patent number: 5346974Abstract: This invention provides polyether polycarboxylate compositions selected from the group consisting of polyether polycarboxylates which may be prepared by oxidizing copolymers of furan and maleic anhydride, and other polyether polycarboxylate compositions prepared by oxidizing novel, intermediate polymers of furan, maleic anhydride, and at least one copolymerizable comonomer, selected from the group consisting of furan, alkenyl alkyl ethers, alkyl acrylates, alkenyl carboxyalkyl ethers, vinyl esters of carboxylic acids, unsaturated carboxylic acids, unsaturated dicarboxylic acids and their anhydrides and esters, and olefins. This invention also provides novel, unoxidized terpolymer intermediates comprising furan, maleic anhydride, and at least one copolymerizable comonomer, other than furan and maleic anhydride, selected from the above group, as well as a process for oxidizing these polymers and the furan and maleic anhydride copolymers.Type: GrantFiled: September 17, 1992Date of Patent: September 13, 1994Assignee: National Starch and Chemical Investment Holding CorporationInventors: Carmine P. Iovine, Rama S. Chandran, John C. Leighton
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Patent number: 5308530Abstract: This invention provides detergent compositions, particularly liquid compositions, utilizing one or more polycarboxylates as builders, or as anti-redeposition agents, wherein the polycarboxylates are novel polymers comprising repeating units of the structure: ##STR1## wherein m is a mole fraction from 0.70 to 0.95; n is a mole fraction from 0.05 to 0.30; A is derived from at least one ethylenically unsaturated carboxylic acid monomer; B is derived from at least one ethylenically unsaturated carboxylic acid monomer and B is not A; and C is: ##STR2## wherein X is --H, ##STR3## or a combination thereof, R.sup.1 is --H, --CH.sub.3, or --(CH.sub.2).sub.q CH.sub.3, or a combination thereof, and q is 1-5; R.sup.2 is: ##STR4## or R.sup.3 , or a combination thereof, and R.sup.3 is a C.sub.8 -C.sub.18 linear or branched alkyl chain; the interpolymer being prepared by polymerizing the monomers in a solvent system in which the monomers and interpolymer are soluble.Type: GrantFiled: November 21, 1990Date of Patent: May 3, 1994Assignee: Lever Brothers Company, Division of Conopco, Inc.Inventors: Michael P. Aronson, Ingrid Brase, David L. Elliott, John F. Hessel, Carmine P. Iovine, John C. Leighton, J. Thomas McCown
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Patent number: 5278211Abstract: Formaldehyde free crosslinking emulsion polymers are prepared by the addition of N-(2,2-dialkoxy-1-hydroxy)ethyl acrylamide to a vinyl ester based polymer. The resultant emulsions can be used as binders for nonwovens or fiberfill or as woodworking adhesives.Type: GrantFiled: April 5, 1993Date of Patent: January 11, 1994Assignee: National Starch and Chemical Investment Holding CorporationInventors: Rama S. Chandran, Carmine P. Iovine, Paul R. Mudge, John C. Leighton, Pravin K. Kukkala
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Patent number: 5252663Abstract: Formaldehyde free crosslinking emulsion polymers are prepared by the addition of N-(2,2-dialkoxy-1-hydroxy)ethyl acrylamide to a vinyl ester based polymer. The resultant emulsions can be used as binders for nonwovens or fiberfill or as woodworking adhesives.Type: GrantFiled: May 22, 1991Date of Patent: October 12, 1993Assignee: National Starch and Chemical Investment Holding CorporationInventors: Rama S. Chandran, Carmine P. Iovine, Paul R. Mudge, John C. Leighton, Malcolm F. Hallam, Pravin K. Kukkala
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Patent number: 5187238Abstract: This invention provides polyether polycarboxylate compositions selected from the group consisting of polyether polycarboxylates which may be prepared by oxidizing copolymers of furan and maleic anhydride, and other polyether polycarboxylate compositions prepared by oxidizing novel, intermediate polymers of furan, maleic anhydride, and at least one copolymerizable comonomer, selected from the group consisting of furan, alkenyl alkyl ethers, alkyl acrylates, alkenyl carboxyalkyl ethers, vinyl esters of carboxylic acids, unsaturated carboxylic acids, unsaturated dicarboxylic acids and their anhydrides and esters, and olefins. This invention also provides novel, unoxidized terpolymer intermediates comprising furan, maleic anhydride, and at least one copolymerizable comonomer, other than furan and maleic anhydride, selected from the above group, as well as a process for oxidizing these polymers and the furan and maleic anhydride copolymers.Type: GrantFiled: April 24, 1991Date of Patent: February 16, 1993Assignee: National Starch and Chemical Investment Holding CorporationInventors: Carmine P. Iovine, Rama S. Chandran, John C. Leighton
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Patent number: 5187006Abstract: A formaldehyde-free latent crosslinking monomer represented by the formula ##STR1## in which R.sup.1 and R.sup.2 are C.sub.1 -C.sub.3 alkyl; R.sup.3 is hydrogen, C.sub.1 -C.sub.3 alkyl, or R.sup.4 --C(O)--; and R.sup.4 is C.sub.1 -C.sub.3 alkyl or C.sub.6 -C.sub.8 aryl, contains an allyl group capable of undergoing addition copolymerization and a dialkoxy ethyl group capable of crosslinking under acidic conditions. The monomer can be copolymerized with comonomers to form emulsion polymers for use as formaldehyde-free binders in nonwoven textiles. Methods for the preparation of the monomer, the polymers, and the nonwoven fabrics are described.Type: GrantFiled: August 14, 1992Date of Patent: February 16, 1993Assignee: National Starch and Chemical Investment Holding CorporationInventors: John C. Leighton, Dennis Neigel, Carmine P. Iovine
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Patent number: 5177263Abstract: A formaldehyde-free latent crosslinking monomer represented by the formula ##STR1## in which R.sup.1 and R.sup.2 are C.sub.1 -C.sub.3 alkyl; R.sup.3 is hydrogen, C.sub.1 -C.sub.3 alkyl, or R.sup.4 --C(O)--; and R.sup.4 is C.sub.1 -C.sub.3 alkyl or C.sub.6 -C.sub.8 aryl, contains an allyl group capable of undergoing addition copolymerization and a dialkoxy ethyl group capable of crosslinking under acidic conditions. The monomer can be copolymerized with comonomers to form emulsion polymers for use as formaldehyde-free binders in nonwoven textiles. Methods for the preparation of the monomer, the polymers, and the nonwoven fabrics are described.Type: GrantFiled: September 24, 1991Date of Patent: January 5, 1993Assignee: National Starch and Chemical Investment Holding CorporationInventors: John C. Leighton, Dennis Neigel, Carmine P. Iovine
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Patent number: 5126108Abstract: Aminophosphonate-containing polymers of the formula:--B].sub.m [A].sub.nwhereinA represents repeating units from one or more ethylenically unsaturated comonomers;B is ##STR1## wherein R is hydrogen or methyl.X is hydrogen or an alkali metal,Z is CH.sub.2 --P(O)(OX).sub.2 or C.sub.1 -C.sub.6 alkyl, aryl, cyclohexyl or alkaryl,m/n is 0.1 to .5.The novel polymers of the present invention may be used as dispersants for concentrated aqueous particulate slurries, and as corrosion inhibitors and scale inhibitors in water treatment.Type: GrantFiled: February 27, 1991Date of Patent: June 30, 1992Assignee: National Starch and Chemical Investment Holding CorporationInventors: John C. Leighton, Carmine P. Iovine
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Patent number: 5087682Abstract: This invention provides polyether polycarboxylate compositions selected from the group consisting of polyether polycarboxylates which may be prepared by oxidizing copolymers of furan and maleic anhydride, and other polyether polycarboxylate compositions prepared by oxidizing novel, intermediate polymers of furan, maleic anhydride, and at least one copolymerizable comonomer, selected from the group consisting of furan, alkenyl alkyl ethers, alkyl acrylates, alkenyl carboxyalkyl ethers, vinyl esters of carboxylic acids, unsaturated carboxylic acids, unsaturated dicarboxylic acids and their anhydrides and esters, and olefins. This invention also provides novel, unoxidized terpolymer intermediates comprising furan, maleic anhydride, and at least one copolymerizable comonomer, other than furan and maleic anhydride, selected from the above group, as well as a process for oxidizing these polymers and the furan and maleic anhydride copolymers.Type: GrantFiled: October 16, 1989Date of Patent: February 11, 1992Assignee: National Starch and Chemical Investment Holding CorporationInventors: Carmine P. Iovine, Rama S. Chandran, John C. Leighton
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Patent number: 5066749Abstract: This invention provides interpolymers comprising repeating units of the structure: ##STR1## wherein m is a mole fraction from 0.70 to 0.95; n is a mole fraction from 0.05 to 0.30; A is derived from at least one ethylenically unsaturated carboxylic acid monomer; B is derived from at least one ethylenically unsaturated carboxylic acid monomer and B is not A; and C is: ##STR2## wherein X is --H, ##STR3## or a combination thereof, R.sup.1 is --H, --CH.sub.3, or --(CH.sub.2).sub.q --CH.sub.3, or a combination thereof, and q is 1-5; R.sup.2 is: ##STR4## or R.sup.3, or a combination thereof, and R.sup.3 is C.sub.8 -C.sub.18 linear or branched alkyl chain; the interpolymer being prepared by polymerizing the monomers in a solvent system in which the monomers and interpolymer are soluble. Also provided is a polymerization process for preparing hydrophobically-modified polycarboxylate builders which are compatible with liquid detergent formulations.Type: GrantFiled: September 11, 1990Date of Patent: November 19, 1991Assignee: National Starch and Chemical Investment Holding CorporationInventors: John C. Leighton, Carmine P. Iovine, Michael P. Aronson, David L. Elliott
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Patent number: 5061396Abstract: This invention provides detergent compositions, particularly liquid compositions, utilizing builders selected from the group consisting of a) polyether polycarboxylate compositions derived from polymers of furan/maleic anhydride copolymers; or b) polyether polycarboxylate compositions derived from polymers comprising furan, maleic anhydride and at least one copolymerized comonomer, selected from the group consisting of alkenyl alkyl ethers, alkyl acrylates, alkenyl carboxyalkyl ethers, vinyl esters of carboxylic acids, unsaturated carboxylic acids, unsaturated dicarboxylic acids and their anhydrides and esters, olefins and furan; c) polymers comprising furan, maleic anhydride, and at least one copolymerizable comonomer other than furan and maleic anhydride, which polymers may be intermediates in the production of the polyether polycarboxylate compositions by oxidation of the intermediate polymers; and d) combinations thereof.Type: GrantFiled: October 16, 1989Date of Patent: October 29, 1991Assignee: National Starch and Chemical Investment Holding CorporationInventors: Carmine P. Lovine, Rama S. Chandran, Ingrid Brase, John C. Leighton