Patents by Inventor Robert J. Proverb
Robert J. Proverb 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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Publication number: 20120255698Abstract: A new process to make high solids polymer backbone with low molecular weight and narrow molecular weight distribution has been developed by a continuous polymerization processes under refluxing conditions. In this process, a mixture of acrylamide monomer, chain transfer agent and initiator is simultaneously and continuously added to the heel of aqueous solution under refluxing conditions.Type: ApplicationFiled: January 31, 2012Publication date: October 11, 2012Applicant: KEMIRA OYJInventors: Naijie Zhang, Michael Ryan, Robert J. Proverb
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Patent number: 7943789Abstract: The invention relates to an aqueous sizing composition comprising (a) an emulsion comprising an alkenylsuccinic anhydride component containing alkenylsuccinic anhydride particles suspended in a first starch component containing emulsifying starch selected from the group consisting of non-ionic starches, ionic starches, and mixtures thereof, and (b) a second starch component selected from the group consisting of non-ionic starches, ionic starches and mixtures thereof, such that the alkenylsuccinic anhydride and the starch in the emulsion and the second starch component are present at a starch: alkenylsuccinic anhydride weight ratio that is sufficiently high to enable the sizing composition to impart useful sizing properties to a fibrous substrate when the sizing composition contacts the fibrous substrate. The invention also relates to fibrous substrates treated with the sizing composition, processes for making the composition and processes for using such a composition, and other compositions.Type: GrantFiled: December 17, 2003Date of Patent: May 17, 2011Assignee: Kemira OYJInventors: Harold A. Goldsberry, III, Kimberly C. Dilts, Charles R. Hunter, Michael P. O'Toole, Robert J. Proverb, Lucyna Pawlowska, Glenn E. Baikow, Katarzyna Komarowska, David L. Dauplaise, Michael J. Scanlon
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Publication number: 20090281212Abstract: The invention relates to an aqueous sizing composition including (a) an emulsion comprising alkenylsuccinic anhydride component containing alkenylsuccinic anhydride particles suspended in an aqueous polymer, and (b) a second component selected from the group consisting of cationic starches, non-ionic starches, anionic starches, water-soluble polymer, water and mixtures thereof, such that the alkenylsuccinic anhydride component is sufficiently dilute to enable the sizing composition to impart useful sizing properties to a fibrous substrate when the sizing composition contacts the fibrous substrate. The invention also relates to fibrous substrates treated with such a composition as well as processes for making and using the composition. In one embodiment, alkylene ketene dimer can be used instead of alkenylsuccinic anhydride.Type: ApplicationFiled: July 20, 2009Publication date: November 12, 2009Inventors: Lucyna Pawlowska, Kimberly C. Dilts, Charles R. Hunter, Michael P. O'Toole, Robert J. Proverb, Thomas T. Long
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Publication number: 20090277355Abstract: The invention relates to an aqueous sizing composition including: (a) a first component comprising an emulsion having an alkenylsuccinic anhydride component containing alkenylsuccinic anhydride particles and a surfactant component; suspended in water; and (b) a second component selected from the group consisting of cationic starches, non-ionic starches, anionic starches, water, water-soluble polymers, and mixtures thereof; such that the alkenylsuccinic anhydride component and the second component are sufficiently diluted to enable the sizing composition to impart useful sizing properties to a fibrous substrate when the sizing composition contacts the fibrous substrate. The invention also relates to fibrous substrates treated with such a composition as well as processes for making and using the composition. In one embodiment, alkyl ketene dimer is used instead of alkenylsuccinic anhydride.Type: ApplicationFiled: July 20, 2009Publication date: November 12, 2009Inventors: Lucyna Pawlowska, Kimberly C. Dilts, Charles R. Hunter, Michael P. O'Toole, Robert J. Proverb, Thomas T. Long, Gina Garro, David L. Dauplaise, Katarzyna Komarowska, Harold A. Goldsberry, III, Glenn E. Baikow
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Publication number: 20090223645Abstract: A composition comprising a polymer that is a reaction product of: a copolymer backbone comprising; (i) at least one acrylamide component, (ii) at least one co-monomer, (iii) at least one initiator and (iv) at least one chain transfer agent; and at least one cellulose reactive agent; wherein the copolymer backbone and cellulose reactive agent are combined with water to form a solution wherein the concentration of the copolymer backbone is about 0.1 to about 19% by weight based on the total weight of the solution. A process to make high solids copolymer backbone with low molecular weight and narrow molecular weight distribution has also been developed by a continuous polymerization process under refluxing conditions. In this process, a mixture of the acrylamide, co-monomer and chain transfer agent and the initiator are simultaneously and continuously added to a heel of water.Type: ApplicationFiled: March 17, 2006Publication date: September 10, 2009Inventors: Naijie Zhang, Michael Ryan, Robert J. Proverb
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Patent number: 6743335Abstract: A method of reducing the level of malodorous amines emitted by paper when exposed to an alkaline environment is provided, which comprises making the paper so that it does not contain ammonium groups that are bonded to any polymer contained in the paper by only one chemical bond. Laminates which emit reduced levels of amines and which are comprised of this paper are also provided. In a preferred embodiment, the paper is sized with a sizing emulsion comprised of alkenyl succinic anhydride and a cationic water-soluble polymer having ammonium groups that are attached to the polymer by at least two chemical bonds.Type: GrantFiled: November 5, 2002Date of Patent: June 1, 2004Assignee: Bayer Chemicals CorporationInventors: Robert J. Proverb, Michael J. Scanlon
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Patent number: 6666952Abstract: This invention relates to paper sizing compositions comprised of at least one sizing agent selected from ASA, AKD and rosin where the at least one sizing agent is emulsified in water, at least one emulsion stabilizer, and from about 0.01% to about 15% by weight of at least one hydrophobic substance, based on the total weight of sizing agent present, provided that the hydrophobic substance is not highly alkoxylated. The sizing promotion efficiency of the paper sizing compositions, as determined by at least one method selected from the Cytec size testing method, the Hercules size testing method, and the Cobb size testing method, is greater than or equal to about 4. Exemplary hydrophobic substances include fatty acid esters, triglycerides, hydrocarbons, esters and/or amides derived from ASA, silicone oils, alcohols, and stearic anhydride. The invention also relates to methods for sizing paper products with these paper sizing compositions and paper or paperboard treated with these sizing compositions.Type: GrantFiled: May 6, 2003Date of Patent: December 23, 2003Assignee: Bayer Chemicals CorporationInventors: Kimberly C. Dilts, Robert J. Proverb, David L. Dauplaise
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Publication number: 20030205167Abstract: This invention relates to paper sizing compositions comprised of at least one sizing agent selected from ASA, AKD and rosin where the at least one sizing agent is emulsified in water, at least one emulsion stabilizer, and from about 0.01% to about 15% by weight of at least one hydrophobic substance, based on the total weight of sizing agent present, provided that the hydrophobic substance is not highly alkoxylated. The sizing promotion efficiency of the paper sizing compositions, as determined by at least one method selected from the Cytec size testing method, the Hercules size testing method, and the Cobb size testing method, is greater than or equal to about 4. Exemplary hydrophobic substances include fatty acid esters, triglycerides, hydrocarbons, esters and/or amides derived from ASA, silicone oils, alcohols, and stearic anhydride. The invention also relates to methods for sizing paper products with these paper sizing compositions and paper or paperboard treated with these sizing compositions.Type: ApplicationFiled: May 6, 2003Publication date: November 6, 2003Inventors: Kimberly C. Dilts, Robert J. Proverb, David L. Dauplaise
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Patent number: 6576049Abstract: This invention relates to paper sizing compositions comprised of at least one sizing agent selected from ASA, AKD and rosin where the at least one sizing agent is emulsified in water, at least one emulsion stabilizer, and from about 0.01% to about 15% by weight of at least one hydrophobic substance, based on the total weight of sizing agent present, provided that the hydrophobic substance is not highly alkoxylated. The sizing promotion efficiency of the paper sizing compositions, as determined by at least one method selected from the Cytec size testing method, the Hercules size testing method, and the Cobb size testing method, is greater than or equal to about 4. Exemplary hydrophobic substances include fatty acid esters, triglycerides, hydrocarbons, esters and/or amides derived from ASA, silicone oils, alcohols, and stearic anhydride. The invention also relates to methods for sizing paper products with these paper sizing compositions and paper or paperboard treated with these sizing compositions.Type: GrantFiled: May 18, 2000Date of Patent: June 10, 2003Assignee: Bayer CorporationInventors: Kimberly C. Dilts, Robert J. Proverb, David L. Dauplaise
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Publication number: 20030070782Abstract: A method of reducing the level of malodorous amines emitted by paper when exposed to an alkaline environment is provided, which comprises making the paper so that it does not contain ammonium groups that are bonded to any polymer contained in the paper by only one chemical bond. Laminates which emit reduced levels of amines and which are comprised of this paper are also provided. In a preferred embodiment, the paper is sized with a sizing emulsion comprised of alkenyl succinic anhydride and a cationic water-soluble polymer having ammonium groups that are attached to the polymer by at least two chemical bonds.Type: ApplicationFiled: November 5, 2002Publication date: April 17, 2003Inventors: Robert J. Proverb, Michael J. Scanlon
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Patent number: 6491790Abstract: A method of reducing the level of malodorous amines emitted by paper when exposed to an alkaline environment is provided, which comprises making the paper so that it does not contain ammonium groups that are bonded to any polymer contained in the paper by only one chemical bond. Laminates which emit reduced levels of amines and which are comprised of this paper are also provided. In a preferred embodiment, the paper is sized with a sizing emulsion comprised of alkenyl succinic anhydride and a cationic water-soluble polymer having ammonium groups that are attached to the polymer by at least two chemical bonds.Type: GrantFiled: May 27, 1999Date of Patent: December 10, 2002Assignee: Bayer CorporationInventors: Robert J. Proverb, Michael J. Scanlon
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Patent number: 5512184Abstract: Quatemary dialkylaminomethyl polymers derived from (alk)acrylamide and about 1 to about 15 mole percent ethylenically unsaturated anionic comonomer wherein the resulting ampholytic polymer has a standard viscosity of at least about 2.1 cps am disclosed. Processes for the preparation of these polymers and their use in flocculating suspended material in a variety of aqueous dispersions are also disclosed.Type: GrantFiled: September 8, 1994Date of Patent: April 30, 1996Assignee: Cytec Technology Corp.Inventors: Michael S. Ryan, David L. Dauplaise, Robert J. Proverb
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Patent number: 5380444Abstract: Quaternary dialkylaminomethyl polymers derived from (alk)acrylamide and about 1 to about 15 mole percent ethylenically unsaturated anionic comonomer wherein the resulting ampholytic polymer has a standard viscosity of at least about 2.1 cps are disclosed. Processes for the preparation of these polymers and their use in flocculating suspended material in paper deinking sludges and deinking process waters are also disclosed.Type: GrantFiled: February 23, 1994Date of Patent: January 10, 1995Assignee: Cytec Technology Corp.Inventors: Michael S. Ryan, David L. Dauplaise, Robert J. Proverb
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Patent number: 5139614Abstract: A process is disclosed for the preparation of styrene/acrylic type polymers which are useful in the sizing of paper. The process comprises polymerizing the monomers in an alcohol/water mixture at reflux temperature in the presence of a free-radical generating catalyst. The catalyst is added portion-wise over the course of the reaction and the resultant polymer is neutralized while substantially simultaneously separating the alcohol/water mixture and adding water to recover a product of less than 25% polymer solids.Type: GrantFiled: June 3, 1991Date of Patent: August 18, 1992Assignee: American Cyanamid CompanyInventors: Otto S. dePierne, David L. Dauplaise, Robert J. Proverb
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Patent number: 5138004Abstract: A process is disclosed for the preparation of styrene/acrylic type polymers which are useful in the sizing of paper. The process comprises polymerizing the monomers in an alcohol/water mixture at reflux temperature in the presence of a free-radical generating catalyst. The catalyst is added portion-wise over the course of the reaction and the resultant polymer is neutralized while substantially simulaneously separating the alcohol/water mixture and adding water to recover a product of less than 25% polymer solids.Type: GrantFiled: June 3, 1991Date of Patent: August 11, 1992Inventors: Otto S. dePierne, David L. Dauplaise, Robert J. Proverb
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Patent number: 5122568Abstract: A process is disclosed for the preparation of styrene/acrylic type polymers which are useful in the sizing of paper. The process comprises polymerizing the monomers in an alcohol/water mixture at reflux temperature in the presence of a free-radical generating catalyst. The catalyst is added portion-wise over the course of the reaction and the resultant polymer is neutralized while substantially simultaneously separating the alcohol/water mixture and adding water to recover a product of less than 25% polymer solids.Type: GrantFiled: February 6, 1991Date of Patent: June 16, 1992Assignee: American Cyanamid CompanyInventors: Otto S. dePierne, David L. Dauplaise, Robert J. Proverb
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Patent number: 4605702Abstract: A cationic, water-soluble acrylamide polymer containing an acrylamide, a cationic comonomer and, optionally, a second comonomer and having sufficient glyoxal-reactive amide substituents and --CH.sub.O HCHO substituents to be thermosetting, the polymer, before glyoxylation, having a molecular weight ranging from about 500 to about 6000, a process for imparting temporary wet strength to paper and the paper per se, are disclosed.Type: GrantFiled: June 27, 1984Date of Patent: August 12, 1986Assignee: American Cyanamid CompanyInventors: Gerald J. Guerro, Robert J. Proverb, Robert F. Tarvin
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Patent number: 4439611Abstract: This disclosure describes continuous epimerization-crystallization process for the isolation of [S-(R*, S*)]-1-(3-acetylthio-3-benzoyl-2-methylpropionyl)-L-proline from a diasteromeric mixture thereof with [S-(R*, R*)]-1-(3-acetylthio-3-benzoyl-2-methylpropionyl)-L-proline.Type: GrantFiled: June 28, 1982Date of Patent: March 27, 1984Assignee: American Cyanamid CompanyInventors: Sivaraman Raghu, Robert J. Proverb, Steven L. Peake