Patents by Inventor David F. Townsend
David F. Townsend 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: 10633798Abstract: Resin systems and methods for making and using same are provided. The method for making a paper product can include contacting a plurality of pulp fibers with a resin system. The resin system can include a first polyamidoamine-epihalohydrin resin and a second resin that can include a second polyamidoamine-epihalohydrin resin, a urea-formaldehyde resin, or a mixture thereof to produce a paper product. The first resin and the second resin can be sequentially or simultaneously contacted with the plurality of pulp fibers. The period for sequential addition between the first resin and the second resin is about 1 second to about 1 hour.Type: GrantFiled: December 4, 2017Date of Patent: April 28, 2020Assignee: ECOLAB USA INC.Inventors: Cornel Hagiopol, David F. Townsend, Clay E. Ringold, James W. Johnston, Robert McDonald, Metric M. Simpson, Frederick S. Potter
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Patent number: 10301777Abstract: Wet strengthened fiber products, wet strengthening resins, and methods for making such wet strengthened fiber products and wet strengthening resins. The wet strengthened fiber product can include a fiber web and an at least partially cured wet strengthening resin, which prior to at least partially curing, the wet strengthening resin can include a polyamide-epihalohydrin (PAE) resin and a cationic styrene maleimide (SMI) resin. The PAE resin can include a reaction product of a polyamidoamine and an epihalohydrin and the cationic SMI resin can include a reaction product of a styrene maleic anhydride (SMA) copolymer and an amine. The wet strengthened fiber product can include the wet strengthening resin in an amount of about 0.05 wt % to about 5 wt %, based on a dried weight of the wet strengthened fiber product.Type: GrantFiled: June 27, 2017Date of Patent: May 28, 2019Assignee: ECOLAB USA INC.Inventors: Cornel Hagiopol, David F. Townsend, Clay E. Ringold, James W. Johnston
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Patent number: 10144818Abstract: Resins compositions and methods for making and using same. The resin composition can include a glyoxalated polyacrylamide resin and a polyamide-epihalohydrin resin. The polyamide-epihalohydrin resin can include a polyamine partially crosslinked with a bridging moiety and having azetidinium ions. The bridging moiety can be derived from a functionally symmetric crosslinker. A fiber product can include a plurality of fibers and the resin composition, where the resin composition can be at least partially cured.Type: GrantFiled: October 15, 2015Date of Patent: December 4, 2018Assignee: ECOLAB USA INC.Inventors: Clay E. Ringold, David F. Townsend, Cornel Hagiopol, James W. Johnston
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Publication number: 20180112359Abstract: Resin systems and methods for making and using same are provided. The method for making a paper product can include contacting a plurality of pulp fibers with a resin system. The resin system can include a first polyamidoamine-epihalohydrin resin and a second resin that can include a second polyamidoamine-epihalohydrin resin, a urea-formaldehyde resin, or a mixture thereof to produce a paper product. The first resin and the second resin can be sequentially or simultaneously contacted with the plurality of pulp fibers. The period for sequential addition between the first resin and the second resin is about 1 second to about 1 hour.Type: ApplicationFiled: December 4, 2017Publication date: April 26, 2018Applicant: ECOLAB USA INC.Inventors: Cornel Hagiopol, David F. Townsend, Clay E. Ringold, James W. Johnston, Robert McDonald, Metric M. Simpson, Frederick S. Potter
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Patent number: 9834890Abstract: Resin systems and methods for making and using same are provided. The method for making a paper product can include contacting a plurality of pulp fibers with a resin system. The resin system can include a first polyamidoamine-epihalohydrin resin and a second resin that can include a second polyamidoamine-epihalohydrin resin, a urea-formaldehyde resin, or a mixture thereof to produce a paper product. The first resin and the second resin can be sequentially or simultaneously contacted with the plurality of pulp fibers. The period for sequential addition between the first resin and the second resin is about 1 second to about 1 hour.Type: GrantFiled: May 23, 2016Date of Patent: December 5, 2017Assignee: Georgia-Pacific Chemicals LLCInventors: Cornel Hagiopol, David F. Townsend, Clay E. Ringold, James W. Johnston, Robert McDonald, Metric M. Simpson, Frederick S. Potter
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Publication number: 20170292223Abstract: Wet strengthened fiber products, wet strengthening resins, and methods for making such wet strengthened fiber products and wet strengthening resins. The wet strengthened fiber product can include a fiber web and an at least partially cured wet strengthening resin, which prior to at least partially curing, the wet strengthening resin can include a polyamide-epihalohydrin (PAE) resin and a cationic styrene maleimide (SMI) resin. The PAE resin can include a reaction product of a polyamidoamine and an epihalohydrin and the cationic SMI resin can include a reaction product of a styrene maleic anhydride (SMA) copolymer and an amine. The wet strengthened fiber product can include the wet strengthening resin in an amount of about 0.05 wt % to about 5 wt %, based on a dried weight of the wet strengthened fiber product.Type: ApplicationFiled: June 27, 2017Publication date: October 12, 2017Applicant: Georgia-Pacific Chemicals LLCInventors: Cornel Hagiopol, David F. Townsend, Clay E. Ringold, James W. Johnston
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Publication number: 20170204565Abstract: Creping adhesives and methods for making and using same are provided. The creping adhesive can include a first thermosetting polyamidoamine-epihalohydrin resin that includes a reaction product of a first epihalohydrin and a first polyamidoamine containing one or more secondary amine groups, a first thermoplastic polyamidoamine-epihalohydrin resin that includes a reaction product of a second epihalohydrin and a second polyamidoamine containing one or more secondary amine groups, and one or more re-wetting agents. The first thermosetting polyamidoamine-epihalohydrin resin can have a weight average molecular weight of about 800,000 to about 1,200,000 and a molar ratio of the first epihalohydrin to the secondary amine groups of about 0.002:1 to about 0.1:1. The first thermoplastic polyamidoamine-epihalohydrin resin can have a weight average molecular weight of about 40,000 to about 200,000 and a molar ratio of the second epihalohydrin to the secondary amine groups of about 0.001:1 to about 0.1:1.Type: ApplicationFiled: April 3, 2017Publication date: July 20, 2017Applicant: Georgia-Pacific Chemicals LLCInventors: Clay E. Ringold, David F. Townsend, Cornel Hagiopol, Karla D. Favors, Thomas L. Wright
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Patent number: 9695552Abstract: Wet strengthened fiber products, wet strengthening resins, and methods for making such wet strengthened fiber products and wet strengthening resins. The wet strengthened fiber product can include a fiber web and an at least partially cured wet strengthening resin, which prior to at least partially curing, the wet strengthening resin can include a polyamide-epihalohydrin (PAE) resin and a cationic styrene maleimide (SMI) resin. The PAE resin can include a reaction product of a polyamidoamine and an epihalohydrin and the cationic SMI resin can include a reaction product of a styrene maleic anhydride (SMA) copolymer and an amine. The wet strengthened fiber product can include the wet strengthening resin in an amount of about 0.05 wt % to about 5 wt %, based on a dried weight of the wet strengthened fiber product.Type: GrantFiled: March 25, 2015Date of Patent: July 4, 2017Assignee: Georgia-Pacific Chemicals LLCInventors: Cornel Hagiopol, David F. Townsend, Clay E. Ringold, James W. Johnston
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Patent number: 9611590Abstract: Creping adhesives and methods for making and using same are provided. The creping adhesive can include a first thermosetting polyamidoamine-epihalohydrin resin that includes a reaction product of a first epihalohydrin and a first polyamidoamine containing one or more secondary amine groups, a first thermoplastic polyamidoamine-epihalohydrin resin that includes a reaction product of a second epihalohydrin and a second polyamidoamine containing one or more secondary amine groups, and one or more re-wetting agents. The first thermosetting polyamidoamine-epihalohydrin resin can have a weight average molecular weight of about 800,000 to about 1,200,000 and a molar ratio of the first epihalohydrin to the secondary amine groups of about 0.002:1 to about 0.1:1. The first thermoplastic polyamidoamine-epihalohydrin resin can have a weight average molecular weight of about 40,000 to about 200,000 and a molar ratio of the second epihalohydrin to the secondary amine groups of about 0.001:1 to about 0.1:1.Type: GrantFiled: November 7, 2014Date of Patent: April 4, 2017Assignee: Georgia-Pacific Chemicals LLCInventors: Clay E. Ringold, David F. Townsend, Cornel Hagiopol, Karla D. Favors, Thomas L. Wright
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Patent number: 9506196Abstract: Resin systems and methods for making and using same are provided. The method for making a paper product can include contacting a plurality of pulp fibers with a resin system. The resin system can include a first polyamidoamine-epihalohydrin resin and a second resin that can include a second polyamidoamine-epihalohydrin resin, a urea-formaldehyde resin, or a mixture thereof to produce a paper product. The first resin and the second resin can be sequentially or simultaneously contacted with the plurality of pulp fibers. The period for sequential addition between the first resin and the second resin is about 1 second to about 1 hour.Type: GrantFiled: April 6, 2015Date of Patent: November 29, 2016Assignee: Georgia-Pacific Chemicals LLCInventors: Cornel Hagiopol, David F. Townsend, Clay E. Ringold, James W. Johnston, Robert McDonald, Metric M. Simpson, Frederick S. Potter
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Publication number: 20160265163Abstract: Resin systems and methods for making and using same are provided. The method for making a paper product can include contacting a plurality of pulp fibers with a resin system. The resin system can include a first polyamidoamine-epihalohydrin resin and a second resin that can include a second polyamidoamine-epihalohydrin resin, a urea-formaldehyde resin, or a mixture thereof to produce a paper product. The first resin and the second resin can be sequentially or simultaneously contacted with the plurality of pulp fibers. The period for sequential addition between the first resin and the second resin is about 1 second to about 1 hour.Type: ApplicationFiled: May 23, 2016Publication date: September 15, 2016Applicant: Georgia-Pacific Chemicals LLCInventors: Cornel Hagiopol, David F. Townsend, Clay E. Ringold, James W. Johnston, Robert McDonald, Metric M. Simpson, Frederick S. Potter
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Patent number: 9404221Abstract: Compositions that include hydrophobizing agents and stabilizers and methods for making and using same are provided. In at least one specific embodiment, a composition can include about 40 wt % to about 60 wt % lignosulfonic acid or a salt thereof, about 1 wt % to about 20 wt % of a hydrophobizing agent, and about 20 wt % to about 59 wt % of a liquid medium, where all weight percents are based on the combined weight of the lignosulfonic acid or salt thereof, the hydrophobizing agent, and the liquid medium.Type: GrantFiled: December 19, 2013Date of Patent: August 2, 2016Assignee: Georgia-Pacific Chemicals LLCInventors: Cornel Hagiopol, Adam K. Sniady, David F. Townsend, Bobby L. Williamson
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Patent number: 9353483Abstract: Resin systems and methods for making and using same are provided. The method for making a paper product can include contacting a plurality of pulp fibers with a resin system. The resin system can include a first polyamidoamine-epihalohydrin resin and a second resin that can include a second polyamidoamine-epihalohydrin resin, a urea-formaldehyde resin, or a mixture thereof to produce a paper product. The first resin and the second resin can be sequentially or simultaneously contacted with the plurality of pulp fibers. The period for sequential addition between the first resin and the second resin is about 1 second to about 1 hour.Type: GrantFiled: April 6, 2015Date of Patent: May 31, 2016Assignee: Georgia-Pacific Chemicals LLCInventors: Cornel Hagiopol, David F. Townsend, Clay E. Ringold, James W. Johnston, Robert McDonald, Metric M. Simpson, Frederick S. Potter
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Publication number: 20160115315Abstract: Resins compositions and methods for making and using same. The resin composition can include a glyoxalated polyacrylamide resin and a polyamide-epihalohydrin resin. The polyamide-epihalohydrin resin can include a polyamine partially crosslinked with a bridging moiety and having azetidinium ions. The bridging moiety can be derived from a functionally symmetric crosslinker. A fiber product can include a plurality of fibers and the resin composition, where the resin composition can be at least partially cured.Type: ApplicationFiled: October 15, 2015Publication date: April 28, 2016Applicant: GEORGIA-PACIFIC CHEMICALS LLCInventors: Clay E. Ringold, David F. Townsend, Cornel Hagiopol, James W. Johnston
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ADHESIVES CONTAINING A RESIN, A KRAFT LIGNIN, AND A SURFACTANT AND METHODS FOR MAKING AND USING SAME
Publication number: 20160096985Abstract: Adhesives containing an aldehyde-based resin, a kraft lignin, and a surfactant and methods for making and using same are provided. In one or more embodiments, the adhesive can include an aldehyde-based resin; a kraft lignin; a surfactant; an alkaline compound; and water. The adhesive can have a viscosity of about 500 cP to about 5,000 cP, at a temperature of about 25° C. In one example, the adhesive can include about 20 wt % to about 40 wt % of the aldehyde-based resin, about 1 wt % to about 15 wt % of the kraft lignin, about 0.05 wt % to about 2 wt % of the surfactant, about 0.5 wt % to about 10 wt % of the alkaline compound, and about 45 wt % to about 70 wt % of water, where all weight percent values are based on a combined weight of the aldehyde-based resin, the kraft lignin, the surfactant, the alkaline compound, and the water.Type: ApplicationFiled: October 5, 2015Publication date: April 7, 2016Applicant: Georgia-Pacific Chemicals LLCInventors: James H. Knight, David F. Townsend, Feng Jing, Irving D. Sand -
Patent number: 9243365Abstract: Methods for making cellulosic fiber webs using release aids containing one or more polyethers and one or more hydrophilic polymers. In at least one specific embodiment, a release aid having a first temperature can be applied to a drying surface having a second temperature. The second temperature can be greater than the first temperature. The release aid, in an aqueous solution that includes water and about 3 vol % of the release aid based on the total volume of the release aid and water, can have a cloud point greater than the first temperature and less than the second temperature at a pressure of 100 kPa. The method can also include adhering a cellulosic fiber web to the drying surface by contacting the cellulosic fiber web to the drying surface. The method can also include dislodging the cellulosic fiber web from the drying surface.Type: GrantFiled: December 19, 2014Date of Patent: January 26, 2016Assignee: Georgia-Pacific Chemicals LLCInventors: David F. Townsend, Cornel Hagiopol
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Patent number: 9180644Abstract: This disclosure relates to papermaking and the use of creping adhesive and release agent compositions used in papermaking. In one aspect, there is provided a new class of release agents and compositions comprising release agents, the release agent comprising: a) a release agent comprising a quaternary imidazoline compound, an imidazoline free base, an oil-based dispersion, or a combination thereof; and b) a polyether component selected from a polypropylene glycol (PPG), a co-polymer of propylene glycol and ethylene glycol (co-PPG-PEG), a blend of polypropylene glycol (PPG) and polyethylene glycol (PEG), and a combination thereof, wherein the release composition has a cloud point in water at standard pressure from about 1° C. to about 98° C. There are also provided creping compositions having a cloud point, comprising an adhesive composition and a release composition as described.Type: GrantFiled: December 19, 2013Date of Patent: November 10, 2015Assignee: Georgia-Pacific Chemicals LLCInventor: David F. Townsend
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Publication number: 20150275438Abstract: Wet strengthened fiber products, wet strengthening resins, and methods for making such wet strengthened fiber products and wet strengthening resins. The wet strengthened fiber product can include a fiber web and an at least partially cured wet strengthening resin, which prior to at least partially curing, the wet strengthening resin can include a polyamide-epihalohydrin (PAE) resin and a cationic styrene maleimide (SMI) resin. The PAE resin can include a reaction product of a polyamidoamine and an epihalohydrin and the cationic SMI resin can include a reaction product of a styrene maleic anhydride (SMA) copolymer and an amine. The wet strengthened fiber product can include the wet strengthening resin in an amount of about 0.05 wt % to about 5 wt %, based on a dried weight of the wet strengthened fiber product.Type: ApplicationFiled: March 25, 2015Publication date: October 1, 2015Applicant: Georgia-Pacific Chemicals LLCInventors: Cornel Hagiopol, David F. Townsend, Clay E. Ringold, James W. Johnston
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Publication number: 20150211183Abstract: Resin systems and methods for making and using same are provided. The method for making a paper product can include contacting a plurality of pulp fibers with a resin system. The resin system can include a first polyamidoamine-epihalohydrin resin and a second resin that can include a second polyamidoamine-epihalohydrin resin, a urea-formaldehyde resin, or a mixture thereof to produce a paper product. The first resin and the second resin can be sequentially or simultaneously contacted with the plurality of pulp fibers. The period for sequential addition between the first resin and the second resin is about 1 second to about 1 hour.Type: ApplicationFiled: April 6, 2015Publication date: July 30, 2015Applicant: Georgia-Pacific Chemicals LLCInventors: Cornel Hagiopol, David F. Townsend, Clay E. Ringold, James W. Johnston, Robert McDonald, Metric M. Simpson, Frederick S. Potter
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Publication number: 20150211182Abstract: Resin systems and methods for making and using same are provided. The method for making a paper product can include contacting a plurality of pulp fibers with a resin system. The resin system can include a first polyamidoamine-epihalohydrin resin and a second resin that can include a second polyamidoamine-epihalohydrin resin, a urea-formaldehyde resin, or a mixture thereof to produce a paper product. The first resin and the second resin can be sequentially or simultaneously contacted with the plurality of pulp fibers. The period for sequential addition between the first resin and the second resin is about 1 second to about 1 hour.Type: ApplicationFiled: April 6, 2015Publication date: July 30, 2015Applicant: GEORGIA-PACIFIC CHEMICALS LLCInventors: Cornel Hagiopol, David F. Townsend, Clay E. Ringold, James W. Johnston, Robert McDonald, Metric M. Simpson, Frederick S. Potter