Patents by Inventor Daniel W. Verstrat
Daniel W. Verstrat 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: 6762269Abstract: A hydrophobe-containing alkali soluble or swellable copolymer thickener comprising an emulsion polymerization product of (A) an ethylenically unsaturated copolymerizable surfactant monomer having a cloud point of from about 65° C. to about 95° C., wherein the surfactant monomer has the formula M(EO)x(BO)zOR1 wherein M is a residue selected from the group consisting of an ethylenically unsaturated carboxylic acid, and an ethylenically unsaturated dicarboxylic acid, EO is an ethylene oxide unit; BO is a butylene oxide unit; x is from 10 to 45; z is from 5 to 35; provided that x+z is from 20 to 45; and R1 is selected from the group consisting of alkyl, alkylene, cycloalkyl, cycloalkylene, and arylalkyl group wherein the alkyl group has 1 to 4 carbon atoms; (B) an &agr;,&bgr;-ethylenically unsaturated monocarboxylic acid monomer; and (C) a nonionic &agr;,&bgr;-ethylenically unsaturated monomer.Type: GrantFiled: August 13, 1998Date of Patent: July 13, 2004Assignee: National Starch and Chemical Investment Holding CorporationInventors: Joseph S. Maxim, Jr., James C. Long, Daniel W. Verstrat
-
Patent number: 6465416Abstract: A thickened aqueous fabric softener composition comprising at least one surfactant and a polymeric rheology modifier, wherein said polymeric rheology modifier is the polymerization product of (i) an alkyl ester of acrylic acid or methacrylic acid; (ii) a monomer selected from the group consisting of a vinyl-substituted heterocyclic compound containing at least one nitrogen or sulfur atom, (meth)acrylamide, a mono- or di-alkylamino alkyl(meth)acrylate, and a mono or di-alkylamino alkyl(meth)acrylamide; and (iii) an associative monomer. The polymeric rheology modifier does not require a make down step to slurry or disperse it into a fabric softener composition. The thickened fabric softener compositions do not affect rewettability, nor do they build up on cloth in multi-cycle washing. In addition, the thickened fabric softener compositions provide softening and reduce the formation of wrinkles.Type: GrantFiled: June 14, 2001Date of Patent: October 15, 2002Assignee: National Starch and Chemical Investment Holding CorporationInventors: Daniel W. Verstrat, Joseph S. Maxim, Jr., James Rosie
-
Publication number: 20010046952Abstract: A thickened aqueous fabric softener composition comprising at least one surfactant and a polymeric rheology modifier, wherein said polymeric rheology modifier is the polymerization product of (i) an alkyl ester of acrylic acid or methacrylic acid; (ii) a monomer selected from the group consisting of a vinyl-substituted heterocyclic compound containing at least one nitrogen or sulfur atom, (meth)acrylamide, a mono- or di-alkylamino alkyl(meth)acrylate, and a mono or di-alkylamino alkyl(meth)acrylamide; and (iii) an associative monomer. The polymeric rheology modifier does not require a make down step to slurry or disperse it into a fabric softener composition. The thickened fabric softener compositions do not affect rewettability, nor do they build up on cloth in multi-cycle washing. In addition, the thickened fabric softener compositions provide softening and reduce the formation of wrinkles.Type: ApplicationFiled: June 14, 2001Publication date: November 29, 2001Inventors: Daniel W. Verstrat, Joseph S. Maxim, James Rosie
-
Patent number: 6271192Abstract: A thickened aqueous fabric softener composition comprising at least one surfactant and a polymeric rheology modifier, wherein said polymeric rheology modifier is the polymerization product of (i) an alkyl ester of acrylic acid or methacrylic acid; (ii) a monomer selected from the group consisting of a vinyl-substituted heterocyclic compound containing at least one nitrogen or sulfur atom, (meth)acrylamide, a mono- or di-alkylamino alkyl(meth)acrylate, and a mono or di-alkylamino alkyl(meth)acrylamide; and (iii) an associative monomer. The polymeric rheology modifier does not require a make down step to slurry or disperse it into a fabric softener composition. The thickened fabric softener compositions do not affect rewettability, nor do they build up on cloth in multi-cycle washing. In addition, the thickened fabric softener compositions provide softening and reduce the formation of wrinkles.Type: GrantFiled: November 10, 1999Date of Patent: August 7, 2001Assignee: National Starch and Chemical Investment Holding CompanyInventors: Daniel W. Verstrat, Joseph S. Maxim, Jr., James Rosie
-
Patent number: 6025431Abstract: The present invention relates to thickened personal care compositions which utilize a thickening amount of an acrylate-based polymeric rheology modifier prepared by polymerization of a C.sub.1 -C.sub.6 alkyl ester of acrylic acid and/or a C.sub.1 -C.sub.6 alkyl ester of methacrylic acid, a monomer chosen from a vinyl-substituted heterocyclic compound containing at least one of a nitrogen or sulfur atom, (meth)acrylamide, a mono- or di-(C.sub.1 -C.sub.4)alkylamino (C.sub.1 -C.sub.4)alkyl (meth)acrylate, a mono or di-(C.sub.1 -C.sub.4)alkylamino (C.sub.1 -C.sub.4)alkyl (meth)acrylamide, and, optionally, an associative monomer.Type: GrantFiled: March 17, 1997Date of Patent: February 15, 2000Assignee: National Starch and Chemical Investment Holding CorporationInventors: Martin S. Cardinali, Daniel W. Verstrat
-
Patent number: 5990233Abstract: The present invention relates to acrylate-based rheology modifiers for use in aqueous compositions having pH of less than or equal to 9 and to the rheologically-modified aqueous compositions, which modifiers contain an emulsion which is prepared by single-stage emulsion polymerization of a C.sub.2 -C.sub.6 alkyl ester of acrylic acid and/or a C.sub.1 -C.sub.6 alkyl ester of methacrylic acid, a monomer chosen from a vinyl-substituted heterocyclic compound containing at least one of a nitrogen or sulfur atom, (meth)acrylamide, a mono- or di- (C.sub.1 -C.sub.4)alkylamino (C.sub.1 -C.sub.4)alkyl (meth)acrylate, a mono or di-(C.sub.1 -C.sub.4)alkylamino (C.sub.1 -C.sub.4)alkyl (meth)acrylamide, and optionally cross-linking monomers and/or associative monomers, in the presence of water, a surfactant, a free-radical initiator and an alcohol selected from C.sub.2 -C.sub.Type: GrantFiled: August 16, 1996Date of Patent: November 23, 1999Assignee: National Starch and Chemical Investment Holding CorporationInventors: Milagros C. Barron, Daniel W. Verstrat, John M. Wilkerson, III
-
Patent number: 5840789Abstract: The present invention relates to aqueous compositions having pH of less than or equal to about 11 and which contain a thickening amount of an acrylate-based rheology modifier, which modifier contains an emulsion which is prepared by single-stage emulsion polymerization of a C.sub.2 -C.sub.6 alkyl ester of acrylic acid and/or a C.sub.1 -C.sub.6 alkyl ester of methacrylic acid, a monomer chosen from a vinyl-substituted heterocyclic compound containing at least one of a nitrogen or sulfur atom, (meth)acrylamide, a mono- or di-(C.sub.1 -C.sub.4)alkylamino (C.sub.1 -C.sub.4)alkyl (meth)acrylate, a mono or di-(C.sub.1 -C.sub.4)alkylamino (C.sub.1 -C.sub.4)alkyl (meth)acrylamide, and optionally cross-linking monomers and/or associative monomers, in the presence of water, a first surfactant, a free-radical initiator and an alcohol selected from C.sub.2 -C.sub.Type: GrantFiled: August 13, 1997Date of Patent: November 24, 1998Assignee: National Starch and Chemical Investment Holding CorporationInventors: Daniel W. Verstrat, Milagros C. Barron
-
Patent number: 5532036Abstract: Methods for reducing volatile organic chemical contents of carpet are disclosed which include fabricating the carpet from a plurality of yarn loops or tufts inserted into the backing of the carpet and then coating the backing with a coating composition which contain polymers characterized by an extremely low volatile organic chemical content. Accordingly, the coating compositions themselves contain reduced levels of volatile organic chemicals and, as such, the carpets coated therewith also contain reduced amounts of volatile organic chemicals.Type: GrantFiled: April 27, 1995Date of Patent: July 2, 1996Assignee: National Starch and Chemical Investment Holding CorporationInventors: John M. Wilkerson, III, Daniel W. Verstrat, Milagros C. Barron
-
Patent number: 5478881Abstract: Novel mono- and multi-functional non-ionic urethane monomers are prepared from surfactants comprising poly(ethylene oxide)(butylene oxide) copolymers, preferably C.sub.1 -C.sub.4 alkoxy-terminated, monohydric, ethylene oxide/butylene oxide block polymers and monoethylenically unsaturated aliphatic isocyanates. When polymerized with, e.g. acrylic acid or alkyl acrylates, these monomers provide copolymers exhibiting greatly enhanced thickening efficiency.Type: GrantFiled: April 27, 1995Date of Patent: December 26, 1995Assignee: National Starch and Chemical Investment Holding CorporationInventors: John M. Wilkerson, III, Daniel W. Verstrat, Milagros C. Barron
-
Patent number: 5442091Abstract: Novel mono- and multi-functional non-ionic urethane monomers are prepared from surfactants comprising poly(ethylene oxide)(butylene oxide) copolymers, preferably C.sub.1 -C.sub.4 alkoxy-terminated, monohydric, ethylene oxide/butylene oxide block polymers and monoethylenically unsaturated aliphatic isocyanates. When polymerized with, e.g. acrylic acid or alkyl acrylates, these monomers provide copolymers exhibiting greatly enhanced thickening efficiency.Type: GrantFiled: November 15, 1994Date of Patent: August 15, 1995Assignee: National Starch and Chemical Investment Holding CorporationInventors: John M. Wilkerson, III, Daniel W. Verstrat, Milagros C. Barron
-
Patent number: 5412142Abstract: Novel mono- and multi-functional non-ionic urethane monomers are prepared from surfactants comprising poly(ethylene oxide)(butylene oxide) copolymers, preferably C.sub.1 -C.sub.4 alkoxy-terminated, monohydric, ethylene oxide/butylene oxide block polymers and monoethylenically unsaturated aliphatic isocyanates. When polymerized with, e.g. acrylic acid or alkyl acrylates, these monomers provide copolymers exhibiting greatly enhanced thickening efficiency.Type: GrantFiled: December 22, 1993Date of Patent: May 2, 1995Assignee: National Starch and Chemical Investment Holding CorporationInventors: John M. Wilkerson, III, Daniel W. Verstrat, Milagros C. Barron
-
Patent number: 5294692Abstract: Novel mono- and multi-functional non-ionic urethane monomers are prepared from surfactants comprising poly(ethylene oxide)(butylene oxide) copolymers, preferably C.sub.1 -C.sub.4 alkoxy-terminated, monohydric, ethylene oxide/butylene oxide block polymers and monoethylenically unsaturated aliphatic isocyanates. When polymerized with, e.g. acrylic acid or alkyl acrylates, these monomers provide copolymers exhibiting greatly enhanced thickening efficiency.Type: GrantFiled: June 30, 1993Date of Patent: March 15, 1994Assignee: National Starch and Chemical Investment Holding CorporationInventors: Milagros C. Barron, John M. Wilkerson, III, Daniel W. Verstrat