Patents Assigned to Hercules Incorporated
  • Felt and equipment surface conditioner
    Patent number: 7534324
    Abstract: Deposition of contamination by deposits of resinous material on paper making equipment is undesirable. This invention prevents or retards such contamination by treating the equipment, especially the press felts with a composition containing a polyoxyalkylene. surfactant which contains units of ethylene oxide and a higher alkylene oxide.
    Type: Grant
    Filed: June 22, 2006
    Date of Patent: May 19, 2009
    Assignee: Hercules Incorporated
    Inventors: Jacqueline K. Pease, G. Gunar McKendree
  • Aqueous dispersion of poly(acetal-polyether) and its use in protective coatings
    Patent number: 7531591
    Abstract: An aqueous dispersion includes an associative thickener based on a hydrophobically modified poly(acetal- or ketal-polyether) (HM-PAPE) and at least one viscosity reducing agent selected from ethoxylated alcohols, ethoxylated acetyleneic diols, phosphate esters, dialkyl sulfosuccinates, and mixtures thereof. This aqueous dispersion improves the incorporation of the HM-PAPEs into aqueous based protective coatings. This dispersion also improves water-borne coating compositions that optionally contain latex.
    Type: Grant
    Filed: November 8, 2005
    Date of Patent: May 12, 2009
    Assignee: Hercules Incorporated
    Inventors: Kirill N. Bakeev, James G. Binder, Theo Klootwijk, Dirk Kruythoff, Betty Maagdenberg-Roels, Tuyen T. Nguyen, Jeffrey K. Politis, Willimlen G. Salomons
  • Diluents for crosslinker-containing adhesive compositions
    Publication number: 20090098387
    Abstract: The disclosure relates to an adhesive composition for bonding lignocellulosic substrates. The adhesive composition contains a crosslinker and a non-urea diluent where the non-urea diluent is present in an amount from about 0.01 to about 75 weight % based on the total wet weight of the composition and where the crosslinker contains essentially no formaldehyde. Also disclosed is the adhesive further containing. an aqueous mixture of a protein source. The disclosure also relates to a process for making lignocellulosic composites utilizing the disclosed adhesive composition and to the lignocellulosic composites made using the disclosed process.
    Type: Application
    Filed: October 9, 2008
    Publication date: April 16, 2009
    Applicant: Hercules Incorporated
    Inventors: Richard L. Brady, Qu-Ming Gu, Ronald R. Staib
  • Anionic copolymers prepared in an inverse emulsion matrix
    Patent number: 7507781
    Abstract: A papermaking method and a composition which utilize, as a drainage aid, a water-soluble anionic copolymer prepared via a water-in-oil polymerization technique that, absent a cross-linking agent, is characterized by a Huggins' constant (k?) determined in 0.01M NaCl greater than 0.75 and a storage modulus (G?) for a 1.5 wt. % actives polymer solution at 4.6 Hz greater than 175 Pa.
    Type: Grant
    Filed: July 23, 2007
    Date of Patent: March 24, 2009
    Assignee: Hercules Incorporated
    Inventors: Brian Walchuk, Fushan Zhang, John C. Harrington, William Sean Carey, Richard Lee Brady
  • Inversion of inverse emulsion polymers
    Patent number: 7429625
    Abstract: A method to invert an inverse emulsion water compatible polymer product using a combination of surfactants that have specific chemical structures is disclosed. A combination, or blend, of two or more surfactants provides for an effective breaker system. The blend of surfactants is more effective than the individual surfactants.
    Type: Grant
    Filed: December 14, 2004
    Date of Patent: September 30, 2008
    Assignee: Hercules Incorporated
    Inventors: John C. Harrington, Robert A. Gelman, K. Abraham Vaynberg
  • Cationic or amphoteric copolymers prepared in an inverse emulsion matrix and their use in preparing cellulosic fiber compositions
    Patent number: 7396874
    Abstract: A papermaking method and a composition which utilize, as a drainage aid, a water-soluble cationic or amphoteric copolymer prepared via a water-in-oil polymerization technique that, absent a cross-linking agent, is characterized by a Huggins' constant (k?) determined in 0.01M NaCl greater than 0.3 and a storage modulus (G?) at 6.3 Hz greater than 50 Pa.
    Type: Grant
    Filed: December 4, 2003
    Date of Patent: July 8, 2008
    Assignee: Hercules Incorporated
    Inventors: Martha Hollomon, Brian L. Walchuk, Frank J. Sutman
  • Water-based drilling fluids
    Patent number: 7384892
    Abstract: A water-based drilling fluid composition includes water and at least one rheology modifier and/or fluid loss control agent, and at least one other ingredient of polymeric additive, inorganic salts, dispersants, shale stabilizers, weighting agents, or finely divided clay particles, depending upon the desired attributes, wherein the rheology modifier and/or the fluid loss control agent comprises carboxymethylated raw cotton linters (CM-RCL) made from the baled raw cotton linters or comminuted raw cotton linters with increased bulk density.
    Type: Grant
    Filed: July 22, 2004
    Date of Patent: June 10, 2008
    Assignee: Hercules Incorporated
    Inventors: Mohand Melbouci, Arjun C. Sau
  • Compositions for imparting desired properties to materials
    Patent number: 7317053
    Abstract: The present invention relates to aqueous compositions comprising component (A) which comprises at least one water-soluble component comprising at least one functional group that undergoes a crosslinking reaction, preferably upon drying and/or heating; component (B) which comprises at least one film-forming material, preferably a latex material; and component (C) which comprises at least one component that provides at least one of moisture and/or water barrier properties and/or vapor barrier properties greater than that provided by the combination of components (A) and (B) alone.
    Type: Grant
    Filed: July 10, 2000
    Date of Patent: January 8, 2008
    Assignee: Hercules Incorporated
    Inventors: Robert A. Gelman, Matthew B. Howle, Andrea Keys, William W. Maslanka, Jeffrey I. Melzer, Michael T. Raab, Richard A. Stuhrke, Robert G. Szewczyk
  • Method and apparatus for producing synergistic biocide
    Patent number: 7311878
    Abstract: An apparatus and methods to produce synergistic mixtures (or combinations) of haloamines to control growth of microorganisms in aqueous systems are disclosed. The apparatus and methods to produce synergistic mixtures entails producing a batch quantity of a haloamine and converting part of the haloamine to a second haloamine species to form the synergistic mixture.
    Type: Grant
    Filed: August 24, 2006
    Date of Patent: December 25, 2007
    Assignee: Hercules Incorporated
    Inventors: Freddie L. Singleton, Michael J. Mayer, Alexander W. Breen
  • Reduced byproduct high solids polyamine-epihalohydrin compositions
    Patent number: 7303652
    Abstract: A process for rendering a polyamine-epihalohydrin resin storage stable, is described. The process entails treating a polyamine-epihalohydrin resin composition, where the resin is formed in a reaction having a molar ratio of epihalohydrin to secondary amine group of less than about 0.5 and where the composition has a solids content of at least 15 wt % and includes CPD-forming species, with at least one enzymatic agent under conditions to inhibit, reduce or remove the CPD-forming species to obtain a gelation storage stable reduced CPD-forming resin so that the composition containing the reduced CPD-forming polyamine-epihalohydrin resin when stored for 24 hours at 50° C. and a pH of about 1.0 releases less than about 100 ppm dry basis of CPD.
    Type: Grant
    Filed: December 10, 2001
    Date of Patent: December 4, 2007
    Assignee: Hercules Incorporated
    Inventors: Richard James Riehle, Ronald Busink, Massimo Berri, Wilm Stevels
  • Paper sized with a sizing agent and a selected sizing promoter
    Patent number: 7270727
    Abstract: Sized paper containing an amphoteric promoter resin that is a polymerization reaction product of a quaternary diallylammonium monomer, optionally a diallylammonium monomer, and an unsaturated organic acid is described. The method of sizing paper with such amphoteric promoter resin compound and a sizing agent provides sized paper with significantly improved sizing property characteristics, and the sized paper exhibits superior retention of brightness due to added optical brighteners.
    Type: Grant
    Filed: April 28, 2003
    Date of Patent: September 18, 2007
    Assignee: Hercules Incorporated
    Inventor: Daniel F. Varnell
  • Process for isomerization of alpha olefins to internal olefins
    Patent number: 7271308
    Abstract: The present invention relates to embodiments for a process for the isomerization of at least one alpha olefin to an internal olefin via a multi-step process resulting in a mixture comprising alkene isomers and a low level of oligomers. According to the present invention an alkylaluminum compound is used in combination with the Group VIII transition metal salt for interaction with the latter, and thereby generating catalytically active species for the isomerization of 1-alkenes to internal alkenes, wherein this mixture is subsequently combined with an acid washed clay.
    Type: Grant
    Filed: October 19, 2004
    Date of Patent: September 18, 2007
    Assignee: Hercules Incorporated
    Inventor: Jian Jian Zhang
  • Anionic copolymers prepared in an inverse emulsion matrix and their use in preparing cellulosic fiber compositions
    Patent number: 7250448
    Abstract: A papermaking method and a composition which utilize, as a drainage aid, a water-soluble anionic copolymer prepared via a water-in-oil polymerization technique that, absent a cross-linking agent, is characterized by a Huggins' constant (k?) determined in 0.01M NaCl greater than 0.75 and a storage modulus (G?) for a 1.5 wt. % actives polymer solution at 4.6 Hz greater than 175 Pa.
    Type: Grant
    Filed: December 6, 2002
    Date of Patent: July 31, 2007
    Assignee: Hercules Incorporated
    Inventors: Brian Walchuk, Fushan Zhang, John C. Harrington, William Sean Carey, Richard Lee Brady
  • Reduced by product polyamine-epihalohydrin resins
    Patent number: 7175740
    Abstract: Processes for rendering a polyamine-epihalohydrin resin storage stable, including processes that prepare a storage stable resin and/or processes that treat resins. A composition containing a polyamine-epihalohydrin resin which includes CPD-forming species can be treated with at least one agent under conditions to at least one of inhibit, reduce and remove the CPD-forming species to obtain a reduced CPD-forming resin so that a composition containing the reduced CPD-forming polyamine-epihalohydrin resin when stored for 2 weeks at 50° C., and a pH of about 2.5 to 3.5 contains less than about 250 ppm dry basis of CPD. The invention is also directed to a gelation storage stable reduced CPD-forming resin so that a composition containing the reduced CPD-forming polyamine-epihalohydrin resin, when stored at pH 1 for 24 hours at 50° C. and measured at 24 hours, produces less than about 1000 ppm dry basis of CPD.
    Type: Grant
    Filed: March 25, 2003
    Date of Patent: February 13, 2007
    Assignee: Hercules Incorporated
    Inventors: Richard James Riehle, Anthony J. Allen, Michaela Hofbauer, Alfred Jacques Haandrikman, Ronald Busink, Mark T. Crisp, John James Hoglen, Huai Nan Cheng, Francis J. Carlin, Jr., John Arthur Lapre, Harold Jabloner
  • Method for controlling pitch and stickies deposition
    Patent number: 7166192
    Abstract: A method for controlling Pitch and Stickies is disclosed. The method comprises adding hydrophobically modified hydroxyethyl cellulose (HMHEC) and cationic polymers to a cellulosic fiber slurry (pulp) or to a paper process or to a paper making system and results in a higher degree of inhibiting organic deposition and retention of pitch on paper fiber as compared to the inhibition of the individual ingredients. The combination of HMHEC and cationic polymers surprising results in a synergistic effect.
    Type: Grant
    Filed: May 23, 2003
    Date of Patent: January 23, 2007
    Assignee: Hercules Incorporated
    Inventors: Riet van de Steeg, Raymond Koerhuis, Freddie L. Singleton
  • Tape joint compounds with CMC thickener system
    Patent number: 7108744
    Abstract: CMC with CMDS greater than or equal to 0.76, optionally with a non-ionic co-thickener or a CMC with CMDS less than 0.75 is used as both the rheology modifier and partial clay substitute in tape joint compounds. This significant reduction of clay level is sufficient to eliminate most of the negative characteristics of clay in joint compound.
    Type: Grant
    Filed: September 13, 2004
    Date of Patent: September 19, 2006
    Assignee: Hercules Incorporated
    Inventor: Thomas J. Podlas
  • Treatment of resins to lower levels of CPD-producing species and improve gelation stability
    Patent number: 7081512
    Abstract: 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: Grant
    Filed: May 4, 2004
    Date of Patent: July 25, 2006
    Assignee: Hercules Incorporated
    Inventor: Richard J. Riehle
  • Joint compounds using thickeners prepared from raw cotton linters
    Patent number: 7066996
    Abstract: A mixture composition of a cellulose ether made from raw cotton linters and at least one additive is used in a ready mixed joint compound composition wherein the amount of the cellulose ether in the joint compound composition is significantly reduced. When this joint compound composition is mixed with water and applied to a substrate, the water retention, sag resistance, and workability of the wet joint compound are comparable or improved as compared to when using conventional similar cellulose ethers.
    Type: Grant
    Filed: April 25, 2005
    Date of Patent: June 27, 2006
    Assignee: Hercules Incorporated
    Inventor: Thomas J. Podlas
  • Cationic polymer composition and its use in conditioning applications
    Patent number: 7067499
    Abstract: A composition of a cationic polygalactomannan or a derivative of cationic polygalactomannans is provided that has a mean average molecular weight (Mw) having a lower limit of 5,000 and an upper limit of 200,000 and has a light transmittance in a 10% aqueous solution of greater than 80% at a light wavelength of 600 nm and a protein content of less than 1.0% by weight of polysaccharide, and aldehyde functionality content of at least of 0.01 meq/gram. This composition is prepared in continuous or batch processes using either oxidizing reagents or combination of hydrolytic reagents and oxidizing reagents. This composition is used in personal care and household care products.
    Type: Grant
    Filed: April 4, 2003
    Date of Patent: June 27, 2006
    Assignee: Hercules Incorporated
    Inventors: Paquita Erazo-Majewicz, Jashawant J. Modi, Charles R. Wheeler, Jr., Zu-Feng Xu
  • Process for preparing high molar mass polymers
    Publication number: 20060127351
    Abstract: The present invention describes processes for preparing water-compatible anionic polymers of high molar mass via water-in-oil polymerization.
    Type: Application
    Filed: December 14, 2004
    Publication date: June 15, 2006
    Applicant: Hercules Incorporated
    Inventors: Erin Doherty, Martha Hollomon, Robert Gelman