Patents by Inventor Richard J. Riehle
Richard J. Riehle 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: 20220213308Abstract: An aqueous composition includes water and a cationic polymeric resin having at least one reactive aldehyde group and formed from the reaction of glyoxal and a polymer. The polymer comprises at least one acrylamide repeating unit and at least one cationic repeating unit wherein a number of reactive aldehyde equivalents divided by a number of equivalents of residual glyoxal based on the total weight of the polymer is greater than about 1.2, wherein prior to reaction the polymer has greater than about 50 mole % acrylamide repeat units and from about 2 to about 30 mole % cationic repeating units, wherein greater than about 5 mole % of the acrylamide repeating units are converted to reactive aldehyde groups in the cationic polymer resin; and wherein the composition exhibits a viscosity gain of less than about 200%.Type: ApplicationFiled: January 4, 2022Publication date: July 7, 2022Applicant: SOLENIS TECHNOLOGIES, L.P.Inventors: Daniel F. Varnell, Richard J. Riehle
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Patent number: 9719212Abstract: Provided is a process for improving the performance of wet-strength resins, such as polyaminopolyamide-epichlorohydrin resins, by treatment with a base to increase molecular weight to provide improved wet strength.Type: GrantFiled: August 13, 2015Date of Patent: August 1, 2017Assignee: SOLENIS TECHNOLOGIES, L.P.Inventors: Mark T Crisp, Michael A Evans, Ashley H Lewis, Jeffrey Hubert Peltier, Bryan K Spraul, Richard J Riehle
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Publication number: 20160047090Abstract: Provided is a process for improving the performance of wet-strength resins, such as polyaminopolyamide-epichlorohydrin resins, by treatment with a base to increase molecular weight to provide improved wet strength.Type: ApplicationFiled: August 13, 2015Publication date: February 18, 2016Inventors: Mark T. Crisp, Michael A. Evans, Ashley H. Lewis, Jeffrey Hubert Peltier, Bryan K. Spraul, Richard J. Riehle
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Patent number: 9121137Abstract: A dispersible article and methods of making the same. The article has a web of fibers and a dried binder in contact with the fibers. The web of fibers has a basis weight of from about 10 gsm to about 150 gsm. The dried binder has a polyfunctional aldehyde and a primary polymer. The primary polymer has at least one functional group that is reactive with the fibers or the polyfunctional aldehyde. The fibers have at least one functional group that is reactive with the polyfunctional aldehyde or the primary polymer. The article has a cross direction wet tensile strength after 15 minutes of aqueous saturation that is at least about 30% of an initial cross direction wet tensile strength. The article is flushable.Type: GrantFiled: April 17, 2014Date of Patent: September 1, 2015Assignees: SELLARS ABSORBENT MATERIALS, INC., SOLENIS TECHNOLOGIES, L.P.Inventors: Helen Viazmensky, Martyn Reginald Searle Davis, Richard J. Riehle, Marc Christopher Putnam, Joel E. Goldstein, Jerry Ballas, Doeung David Choi
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Publication number: 20140311696Abstract: A dispersible article and methods of making the same. The article has a web of fibers and a dried binder in contact with the fibers. The web of fibers has a basis weight of from about 10 gsm to about 150 gsm. The dried binder has a polyfunctional aldehyde and a primary polymer. The primary polymer has at least one functional group that is reactive with the fibers or the polyfunctional aldehyde. The fibers have at least one functional group that is reactive with the polyfunctional aldehyde or the primary polymer. The article has a cross direction wet tensile strength after 15 minutes of aqueous saturation that is at least about 30% of an initial cross direction wet tensile strength. The article is flushable.Type: ApplicationFiled: April 17, 2014Publication date: October 23, 2014Applicants: Sellars Absorbent Materials, Inc., Hercules IncorporatedInventors: Helen Viazmensky, Martyn Reginald Searle Davis, Richard J. Riehle, Marc Christopher Putnam, Joel E. Goldstein, Jerry Ballas, Doeung David Choi
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Patent number: 8604134Abstract: Vinylamine-containing polymers are disclosed where the amine groups are substituted with (1) cationic functional groups, (2) anionic functional groups, (3) hydrophobic functional groups, (4) hydrophilic functional groups, (5) functional groups that impart amphoteric characteristics to the polymers, or (6) combinations thereof. Also disclosed are processes for preparing such polymers, as well as compositions comprising such polymers. Among other applications, these polymers can be used in papermaking applications as dry strength additives, wet strength additives, retention aids, drainage aids, and pitch and stickies control agents.Type: GrantFiled: July 31, 2008Date of Patent: December 10, 2013Assignee: Hercules IncorporatedInventors: Qu-Ming Gu, Jonathan M. McKay, Richard J. Riehle
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Patent number: 8518215Abstract: Vinylamine-containing polymers are disclosed where the amine groups are substituted with cationic functional groups. Processes for preparing such polymers, as well as compositions comprising such polymers are also disclosed. Among other applications, these polymers can be used in papermaking applications as dry strength additives, wet strength additives, retention aids, drainage aids, and pitch and stickies control agents.Type: GrantFiled: January 29, 2010Date of Patent: August 27, 2013Assignee: Hercules IncorporatedInventors: Jonathan M. McKay, Qu-Ming Gu, Richard J. Riehle
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Patent number: 8101710Abstract: This invention relates to a process for preparing polyamine-epihalohydrin resins having reduced levels of residuals. The process comprises (a) charging a membrane separation apparatus with an aqueous composition comprising at least one polyamine-epihalohydrin resin, and (b) separating the aqueous composition into a permeate and a retentate by passing the aqueous composition through the membrane of the membrane separation apparatus. The retentate comprises at least one polyamine-epihalohydrin resin having lower levels of residuals on an equal active component basis than the aqueous composition of (a). The permeate comprises residuals removed from the aqueous composition of (a) and less than 5% by weight of the active component of said at least one polyamine-epihalohydrin resin. The polyamine-epihalohydrin resins having reduced levels of residuals can be used to make wet strength agents, dry strength agents, creping adhesives for paper products, curing agents for wood product adhesives, and other products.Type: GrantFiled: April 25, 2011Date of Patent: January 24, 2012Assignee: Hercules IncorporatedInventors: Richard J. Riehle, Stephen Vinciguerra
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Publication number: 20110263814Abstract: This invention relates to a process for preparing polyamine-epihalohydrin resins having reduced levels of residuals. The process comprises (a) charging a membrane separation apparatus with an aqueous composition comprising at least one polyamine-epihalohydrin resin, and (b) separating the aqueous composition into a permeate and a retentate by passing the aqueous composition through the membrane of the membrane separation apparatus. The retentate comprises at least one polyamine-epihalohydrin resin having lower levels of residuals on an equal active component basis than the aqueous composition of (a). The permeate comprises residuals removed from the aqueous composition of (a) and less than 5% by weight of the active component of said at least one polyamine-epihalohydrin resin. The polyamine-epihalohydrin resins having reduced levels of residuals can be used to make wet strength agents, dry strength agents, creping adhesives for paper products, curing agents for wood product adhesives, and other products.Type: ApplicationFiled: April 25, 2011Publication date: October 27, 2011Applicant: HERCULES INCORPORATEDInventors: Richard J. Riehle, Stephen Vinciguerra
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Publication number: 20110155339Abstract: A process is disclosed for the production of paper with enhanced dry strength comprising adding to the wet end of a paper machine, (a) a vinylamine-containing aqueous solution polymer having a molecular weight of from 75,000 daltons to 750,000 daltons and (b) an amphoteric or cationic acrylamide-containing aqueous solution polymer having a molecular weight of from 75,000 daltons to 1,500,000 daltons, wherein the sum of the anionic and cationic monomers comprises at least 5% on a molar basis of the composition of the acrylamide-containing polymer.Type: ApplicationFiled: December 22, 2010Publication date: June 30, 2011Inventors: Clement L. Brungardt, Jonathan M. McKay, Richard J. Riehle
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Patent number: 7932349Abstract: This invention relates to a process for preparing polyamine-epihalohydrin resins having reduced levels of residuals. The process comprises (a) charging a membrane separation apparatus with an aqueous composition comprising at least one polyamine-epihalohydrin resin, and (b) separating the aqueous composition into a permeate and a retentate by passing the aqueous composition through the membrane of the membrane separation apparatus. The retentate comprises at least one polyamine-epihalohydrin resin having lower levels of residuals on an equal active component basis than the aqueous composition of (a). The permeate comprises residuals removed from the aqueous composition of (a) and less than 5% by weight of the active component of said at least one polyamine-epihalohydrin resin. The polyamine-epihalohydrin resins having reduced levels of residuals can be used to make wet strength agents, dry strength agents, creping adhesives for paper products, curing agents for wood product adhesives, and other products.Type: GrantFiled: September 17, 2007Date of Patent: April 26, 2011Assignee: Hercules IncorporatedInventors: Richard J. Riehle, Steven Vinciguerra
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Publication number: 20100193148Abstract: Vinylamine-containing polymers are disclosed where the amine groups are substituted with cationic functional groups. Processes for preparing such polymers, as well as compositions comprising such polymers are also disclosed. Among other applications, these polymers can be used in papermaking applications as dry strength additives, wet strength additives, retention aids, drainage aids, and pitch and stickies control agents.Type: ApplicationFiled: January 29, 2010Publication date: August 5, 2010Inventors: Jonathan M. McKay, Qu-Ming Gu, Richard J. Riehle
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Publication number: 20090043051Abstract: Vinylamine-containing polymers are disclosed where the amine groups are substituted with (1) cationic functional groups, (2) anionic functional groups, (3) hydrophobic functional groups, (4) hydrophilic functional groups, (5) functional groups that impart amphoteric characteristics to the polymers, or (6) combinations thereof. Also disclosed are processes for preparing such polymers, as well as compositions comprising such polymers. Among other applications, these polymers can be used in papermaking applications as dry strength additives, wet strength additives, retention aids, drainage aids, and pitch and stickies control agents.Type: ApplicationFiled: July 31, 2008Publication date: February 12, 2009Inventors: Qu-Ming Gu, Jonathan M. McKay, Richard J. Riehle
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Publication number: 20080292886Abstract: Compositions suitable for use as wood adhesives are described, which compositions comprise: (a) a polymeric component selected from the group consisting of lignins, proteins, and mixtures thereof, (b) an adhesion promoter comprising at least one component selected from the group consisting of (i) adducts of an epoxide and a resin selected from the group consisting of polyamine resins, polyamidoamine resins, polyamide resins, and combinations thereof, and (ii) combinations of a curing agent and a compound having at least one amine, amide, imine, imide, or nitrogen-containing heterocyclic functional group capable of reacting with at least one functional group of the polymeric component; and (c) an additive selected from the group consisting of urea, N-substituted ureas, N,N-disubstituted ureas, N,N?-disubstituted ureas, N,N,N?-trisubstituted ureas, N,N,N?,N?-tetrasubstituted ureas, urea derivatives, and mixtures thereof.Type: ApplicationFiled: March 19, 2008Publication date: November 27, 2008Applicant: Hercules Inc.Inventors: Anthony J. Allen, Richard J. Riehle, Joseph Marcinko
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Publication number: 20080066881Abstract: This invention relates to a process for preparing polyamine-epihalohydrin resins having reduced levels of residuals. The process comprises (a) charging a membrane separation apparatus with an aqueous composition comprising at least one polyamine-epihalohydrin resin, and (b) separating the aqueous composition into a permeate and a retentate by passing the aqueous composition through the membrane of the membrane separation apparatus. The retentate comprises at least one polyamine-epihalohydrin resin having lower levels of residuals on an equal active component basis than the aqueous composition of (a). The permeate comprises residuals removed from the aqueous composition of (a) and less than 5% by weight of the active component of said at least one polyamine-epihalohydrin resin. The polyamine-epihalohydrin resins having reduced levels of residuals can be used to make wet strength agents, dry strength agents, creping adhesives for paper products, curing agents for wood product adhesives, and other products.Type: ApplicationFiled: September 17, 2007Publication date: March 20, 2008Applicant: Hercules Inc.Inventors: Richard J. Riehle, Stephen Vinciguerra
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Patent number: 7081512Abstract: A process for treating a composition containing a polyamine-epihalohydrin resin that has a low level of CPD-producing species and good gelation stability is disclosed. A polyamine-epihalohydrin resin is prepared with a ratio of epihalohydrin:amine of less than about 1.1:1.0; The resin is then subjected to a base treatment followed by an acid treatment resulting in a resin that has good gelation storage stability and produces low levels of CPD.Type: GrantFiled: May 4, 2004Date of Patent: July 25, 2006Assignee: Hercules IncorporatedInventor: Richard J. Riehle
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Publication number: 20040266984Abstract: A process for treating a composition containing a polyamine-epihalohydrin resin that has a low level of CPD-producing species and good gelation stability is disclosed. A polyamine-epihalohydrin resin is prepared with a ratio of epihalohydrin:amine of less than about 1.1:1.0; The resin is then subjected to a base treatment followed by an acid treatment resulting in a resin that has good gelation storage stability and produces low levels of CPD.Type: ApplicationFiled: May 4, 2004Publication date: December 30, 2004Inventor: Richard J. Riehle
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Patent number: 6325893Abstract: A sizing agent for paper that is a 2-oxetanone ketene multimer which is not solid at 35° C., particularly a multimer mixture in which at least 25 weight percent of the hydrocarbon substituents contain irregularities such as branched alkyl groups or linear or branched alkenyl groups. Paper surface sized with the 2-oxetanone ketene multimer sizing agent and the method of surface sizing paper are also disclosed.Type: GrantFiled: November 8, 1999Date of Patent: December 4, 2001Assignee: Hercules IncorporatedInventors: Clement L. Brungardt, Richard J. Riehle, Jian Jian Zhang
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Patent number: 6197919Abstract: This invention relates to resins useful for imparting dry-strength and temporary wet-strength to paper, the process of incorporating these resins into paper and the paper produced containing the resins. The resin comprises an amphoteric polymer produced through polymerization of an anionic monomer, a monomer containing aldehyde functionality and a cationic monomer.Type: GrantFiled: May 30, 1997Date of Patent: March 6, 2001Assignee: Hercules IncorporatedInventors: Mark T. Crisp, Richard J. Riehle
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Patent number: 6175022Abstract: Nucelophilic group, such as alcohol, terminated 2-oxetanone multimers, process of making same by reacting e.g. alcohol and dicarboxylic acid chloride in the presence of triethylamine, and their use for sizing paper.Type: GrantFiled: December 30, 1998Date of Patent: January 16, 2001Assignee: Hercules IncorporatedInventors: Clement L. Brungardt, Richard J. Riehle, Ian Vallance, Jian Jian Zhang