Patents by Inventor James F. Kneller
James F. Kneller 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: 6399715Abstract: A method for the preparation of a succinimide copolymer by the catalytic co-polymerization of aspartic acid with a selected polyfunctional monomer in the presence of a cyclic carbonate solvent. Succinimide copolymers of relatively high weight average molecular weight and high purity can be produced in relatively high yields while employing a relatively low catalyst loading.Type: GrantFiled: March 5, 2001Date of Patent: June 4, 2002Assignee: Donlar CorporationInventors: Grigory Ya. Mazo, Robert J. Ross, James F. Kneller, Jacob Mazo
-
Publication number: 20010012882Abstract: A method for the preparation of a succinimide copolymer by the catalytic co-polymerization of aspartic acid with a selected polyfunctional monomer in the presence of a cyclic carbonate solvent. Succinimide copolymers of relatively high weight average molecular weight and high purity can be produced in relatively high yields while employing a relatively low catalyst loading.Type: ApplicationFiled: March 5, 2001Publication date: August 9, 2001Applicant: Donlar CorporationInventors: Grigory Ya. Mazo, Robert J. Ross, James F. Kneller, Jacob Mazo
-
Patent number: 6197897Abstract: A method for the preparation of a succinimide copolymer by the catalytic co-polymerization of aspartic acid with a selected polyfunctional monomer in the presence of a cyclic carbonate solvent. Succinimide copolymers of relatively high weight average molecular weight and high purity can be produced in relatively high yields while employing a relatively low catalyst loading.Type: GrantFiled: July 20, 1999Date of Patent: March 6, 2001Assignee: Donlar CorporationInventors: Grigory Ya. Mazo, Robert J. Ross, James F. Kneller, Jacob Mazo
-
Patent number: 5939517Abstract: A method for the preparation of a succinimide copolymer by the catalytic co-polymerization of aspartic acid with a selected polyfunctional monomer in the presence of a cyclic carbonate solvent. Succinimide copolymers of relatively high weight average molecular weight and high purity can be produced in relatively high yields while employing a relatively low catalyst loading.Type: GrantFiled: January 13, 1998Date of Patent: August 17, 1999Assignee: Donlar CorporationInventors: Grigory Ya. Mazo, Robert J. Ross, James F. Kneller, Jacob Mazo
-
Patent number: 5939518Abstract: A method for the preparation of a desired molecular weight polysuccinimide by the catalytic polymerization of aspartic acid in the presence of a cyclic carbonate solvent. Polysuccinimide of relatively high weight average molecular weight and high purity can be produced in relatively high yields while employing a relatively low catalyst loading.Type: GrantFiled: May 26, 1998Date of Patent: August 17, 1999Assignee: Donlar CorporationInventors: Grigory Ya. Mazo, Daniel A. Batzel, James F. Kneller, Jacob Mazo
-
Patent number: 5783728Abstract: An improved method is disclosed for the preparation of novel alkali metal diphosphinate salts by the reaction of an acetylenic compound with an alkali metal hypophosphite in the presence of a free radical source, the use of these novel compounds in further reactions to prepare diphosphonate compounds and diphosphinate containing adducts, oligomers and polymers and utilization of these compounds, polymers and oligomers to control calcium carbonate scale and mild steel corrosion in cooling water.Type: GrantFiled: January 7, 1997Date of Patent: July 21, 1998Assignee: Nalco Chemical CompanyInventors: James F. Kneller, Donald A. Johnson, Vytas Narutis, Binaifer S. Khambatta
-
Patent number: 5756595Abstract: A method for the preparation of a desired molecular weight polysuccinimide by the catalytic polymerization of aspartic acid in the presence of a cyclic carbonate solvent. Polysuccinimide of relatively high weight average molecular weight and high purity can be produced in relatively high yields while employing a relatively low catalyst loading.Type: GrantFiled: March 3, 1997Date of Patent: May 26, 1998Assignee: Donlar CorporationInventors: Grigory Ya Mazo, Daniel A. Batzel, James F. Kneller, Jacob Mazo
-
Patent number: 5647995Abstract: An improved method is disclosed for the preparation of novel alkali metal diphosphinate salts by the reaction of an acetylenic compound with an alkali metal hypophosphite in the presence of a free radical source, the use of these novel compounds in further reactions to prepare diphosphonate compounds and diphosphinate containing adducts, oligomers and polymers and utilization of these compounds, polymers and oligomers to control calcium carbonate scale and mild steel corrosion in cooling water.Type: GrantFiled: April 29, 1994Date of Patent: July 15, 1997Assignee: Nalco Chemical CompanyInventors: James F. Kneller, Donald A. Johnson, Vytas Narutis, Binaifer S. Khambatta
-
Patent number: 5508434Abstract: Polysuccinimide of varying molecular weight has been prepared by heat polymerization of aspartic acid in the presence of a sulfur-containing dehydrating agent employing a variety of reaction mixtures and reaction conditions. Sulfur trioxide and heat decomposable sulfur trioxide precursor dehydrating agents are preferred for this purpose. The presence of an acid scavenger within the reaction mixture is desirable and leads to a relatively higher molecular weight polysuccinimide, while the absence of an acid scavenger results in a relatively lower molecular weight polysuccinimide.Type: GrantFiled: September 28, 1994Date of Patent: April 16, 1996Assignee: Donlar CorporationInventors: Daniel A. Batzel, James F. Kneller, Abdul R. Y. Meah
-
Patent number: 5478919Abstract: Aspartic acid precursors such as mono and diammonium maleate, maleamic acid, ammonium maleamate, ammonium malate and mixtures of these and other precursors are copolycondensed thermally with a variety of mono, di and multifunctional monomers containing amino, hydroxyl and carboxyl functional groups. The resulting condensation copolymers and terpolymers contain succinimide units derived from aspartic acid precursors, condensed with other functional group monomers usually though amide and ester linkages. Hydrolysis of the polysuccinimide copolymers and terpolymers with alkali, alkaline earth and ammonium hydroxide produces aspartic acid copolymer and terpolymer salts.Type: GrantFiled: July 29, 1994Date of Patent: December 26, 1995Assignee: Donlar CorporationInventors: Larry P. Koskan, James F. Kneller, Daniel A. Batzel
-
Patent number: 5382323Abstract: Improved halogen-free Yankee Dryer adhesives based on cross linked cat ionic polyaminoamide polymers are described. The adhesives are obtained by crosslinking a backbone cationic polymer formed by reacting a difunctional carboxylic acid with a polyamine containing at least one secondary amine, said crosslinking achieved by the use of a multi-functional aidehyde. The preferred adhesive is that obtained by reacting adipic acid with diethylenetriamine, at essentially equimolar ratios of from about 1.2: 1.0 to about 1.0: 1.2, and then crosslinking with a dialdehyde selected from glutaraldehyde, glyoxal, or mixtures thereof. Improved adhesion and peel strength are obtained when using the new materials as compared to materials now commercially used.Type: GrantFiled: February 22, 1994Date of Patent: January 17, 1995Assignee: Nalco Chemical CompanyInventors: Gary S. Furman, Jr., James F. Kneller, Kristy M. Bailey, Martha R. Finck, Winston Su
-
Patent number: 5266243Abstract: The invention provides an improved method for preparing fired ceramic oxide material. A ceramic oxide powder is dispersed in an aqueous solution containing a dispersant having as an active ingredient a dissolved salt of an anionic polymer formed from maleic acid, maleic acid anhydride, or fumaric acid. The slurry containing the dispersed ceramic oxide powder is spray-dried, compressed while substantially dry, and heated to produce a fired ceramic material. Ceramic materials having relatively higher density and strength can be produced by the method.Type: GrantFiled: July 16, 1992Date of Patent: November 30, 1993Inventors: James F. Kneller, David R. Cosper
-
Patent number: 5179173Abstract: The invention describes novel amino(lower alkyl)phosphinic acid compounds and their use to modify acrylamide polymers, acrylic acid polymers and acrylamide-acrylic acid co-polymers which produces polymers containing amidoalkylphosphinic acid groups.Type: GrantFiled: April 10, 1991Date of Patent: January 12, 1993Assignee: Nalco Chemical CompanyInventors: Dodd W. Fong, Mary A. Kinsella, James F. Kneller, John W. Sparapany
-
Patent number: 5143622Abstract: The invention describes acrylamide, acrylic acid, polymers and co-polymers containing phosphinate groups to inhibit scale and corrosion caused by metal surfaces contacting industrial waters.Type: GrantFiled: June 5, 1991Date of Patent: September 1, 1992Assignee: Nalco Chemical CompanyInventors: Dodd W. Fong, Mary A. Kinsella, James F. Kneller, John W. Sparapany
-
Patent number: 5085794Abstract: A phosphinate containing composition which has as its major ingredient more than 32 mole percent of a phosphinicosuccinic acid oligomer having the probable structural formula: ##STR1## M is H, Na, K, NH.sub.4, or mixtures thereof; and m and n are either 0 or a small whole number with the proviso that either m or n is a small whole number and the sum of m plus n is greater than 2.Type: GrantFiled: April 25, 1990Date of Patent: February 4, 1992Assignee: Nalco Chemical CompanyInventors: James F. Kneller, Vytas Narutis, Barbara E. Fair, Donald A. Johnson
-
Patent number: 5023000Abstract: Calcium carbonate scale is controlled by treating calcium carbonate containing waters with a predominantly phosphinate containing composition where has as its major ingredient more than 32 mole percent of a phosphinicosuccinic acid oligomer having the probable structural formula . ##STR1## M is H, Na, K, NH.sub.4, or mixtures thereof; and m and n are either 0 or a small whole number with proviso that either m or n is a small whole number and the sum of m plus n is greater than 2.Type: GrantFiled: May 10, 1990Date of Patent: June 11, 1991Assignee: Nalco Chemical CompanyInventors: James F. Kneller, Barbara E. Fair, Gianfranco F. Mazzani, I. Sergio Di Simone
-
Patent number: 5018577Abstract: A squeeze treatment for preventing scale utilizes as the scale inhibitor a predominantly phosphinate containing composition comprising:______________________________________ Mole Percent - Ingredients Less Than ______________________________________ A. Monosodium phosphinicobis - 22 (succinic acid) B. Monosodium phosphinico- 26 succinic acid C. Sodium phosphonosuccinic acid 12 D. Sodium phosphate 5 E. Sodium phosphite 6 F. Sodium hypophosphite, and 6 G. A phosphinicosuccinic acid oligomer having the probable structural formula: ##STR1## ______________________________________wherein G exceeds 25 mole percent, M is H, Na, K, NH.sub.4, amine salts and mixtures thereof and m and n are either 0 or a small whole number with the proviso that either m or n is a small whole number and the sum of m plus n is greater than 2.Type: GrantFiled: August 2, 1990Date of Patent: May 28, 1991Assignee: Nalco Chemical CompanyInventors: Jerry E. Pardue, James F. Kneller
-
Patent number: 4929425Abstract: A method for inhibiting corrosion in industrial cooling waters which contain hardness and a pH of at least 6.5, by dosing the water with a composition which comprises a water-soluble inorganic phosphate capable of inhibiting corrosion in an aqueous alkaline environment and a hydrocarbon polymer containing an N-substituted acrylamide polymers with an amide structure as follows: ##STR1## where R.sub.2 is hydrogen or methyl, where R.sub.1 is a hydrogen or an alkyl and R is alkylene or phenylene, and X is sulfonate, (poly)hydroxyl, (poly)carboxyl or carbonyl, and combinations thereof; or containing derivatized maleic anhydride homo-, co- and terpolymers having N-substituted maleamic acid units, N-substituted maleimide units and maleic acid (and salts) units having a structure as follows: ##STR2## where R.sub.1, R.sub.2 and R.sub.Type: GrantFiled: February 12, 1988Date of Patent: May 29, 1990Assignee: Nalco Chemical CompanyInventors: John E. Hoots, Donald A. Johnson, Dodd W. Fong, James F. Kneller
-
Patent number: 4923634Abstract: A method for inhibiting corrosion in industrial cooling waters which contain hardness and a pH of at least 6.5, by dosing the water with a composition which comprises a water-soluble inorganic phosphate capable of inhibiting corrosion in an aqueous alkaline environment and a hydrocarbon polymer containing an N-substituted acrylamide polymers with an amide structure as follows: ##STR1## where R.sub.2 is hydrogen or methyl, where R.sub.1 is a hydrogen or an alkyl and R is alkylene or phenylene, and X is sulfonate, (poly)hydroxyl, (poly)carboxyl or carbonyl, and combinations thereof; or containing derivatized maleic anhydride homo-, co- and terpolymers having N-substituted maleamic acid units, N-substituted maleimide units and maleic acid (and salts) units having a structure as follows: ##STR2## where R.sub.1, R.sub.2 and R.sub.Type: GrantFiled: February 12, 1988Date of Patent: May 8, 1990Assignee: Nalco Chemical CompanyInventors: John E. Hoots, Donald A. Johnson, Dodd W. Fong, James F. Kneller
-
Patent number: RE36234Abstract: Aspartic acid precursors such as mono and diammonium maleate, maleamic acid, ammonium maleamate, ammonium malate and mixtures of these and other precursors are copolycondensed thermally with a variety of mono, di and multifunctional monomers containing amino, hydroxyl and carboxyl functional groups. The resulting condensation copolymers and terpolymers contain succinimide units derived from aspartic acid precursors, condensed with other functional group monomers usually .?.though.!. .Iadd.through .Iaddend.amide and ester linkages. Hydrolysis of the polysuccinimide copolymers and terpolymers with alkali, alkaline earth and ammonium hydroxide produces aspartic acid copolymer and terpolymer salts.Type: GrantFiled: December 22, 1997Date of Patent: June 22, 1999Assignee: Donlar CorporationInventors: Larry P. Koskan, James F. Kneller, Daniel A. Batzel