Patents Represented by Attorney David Edwards
  • 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
  • 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
  • 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
  • Patent number: 6905694
    Abstract: A personal care composition is composed of: (a) from about 0.1% to about 99% by weight of a vehicle system which comprises a hydrophobically modified nonionic water soluble polysaccharide polymer which comprises a water soluble polysaccharide polymer backbone and a hydrophobic moiety selected from the group consisting of 3-alkoxy-2-hydroxypropyl group wherein the allyl moiety is a straight or branch chain having 2-6 carbon atoms, C3-C7 alky aryl alkyl, alkyl aryl groups and mixtures thereof, wherein the ratio of the hydrophilic portion to the hydrophobic portion of the polymer is from about 2:1 to 1000:1, and (b) at least one other personal care ingredient. This compostion can be used in a wide range of personal care products such as shampoos, conditioners, hair coloring and styling agents, soaps, body washing agents, underarm products, lubricating agents, oral care products, denture adhesives, sunscreen agents, make-up products, and the like.
    Type: Grant
    Filed: May 12, 1997
    Date of Patent: June 14, 2005
    Assignee: Hercules Incorporated
    Inventor: Jashawant J. Modi
  • Patent number: 6900255
    Abstract: A composition is composed of a hydrophobically modified aminoplast polyether or hydrophobically modified non-urethane polyethers with a viscosity suppressing agent of cyclodextrins or derivatives thereof. A method for improving the pumpability and pourability of aqueous solutions of thickener of a hydrophobically modified aminoplast polyether or hydrophobically modified non-urethane polyethers which is provided by admixing a cyclodextrin with the thickener to form a complex of the cyclodextrin and thickener where the viscosity of the thickener is suppressed and adding the complexed admixture to an aqueous system containing a water-insoluble polymer wherein the cyclodextrin is decomplexed and the thickener becomes an effective thickener. An example of the uses for this composition and method is in film forming coatings such as latex paints.
    Type: Grant
    Filed: May 16, 2003
    Date of Patent: May 31, 2005
    Assignee: Hercules Incorporated
    Inventor: Arjun C. Sau
  • Patent number: 6825248
    Abstract: This invention provides a light white mineral oil-based fluidized polymer suspension (FPS) composition for use as a rheology modifier in paper coatings. It has been found that by using a selected composition of low viscosity oil as a carrier, high solids content and environmental friendly fluidized polymer suspensions of water soluble cellulose derivatives, synthetic water soluble polymers, guar gum and derivatives, starch and derivatives and mixtures thereof, can be prepared. The FPS of the present invention was found to provide unexpected beneficial performance properties when added as a rheology modifier to a paper coating containing standard binders, pigment, and water. The oil-based fluid polymer suspension composition of the present invention for use as a rheology modifier in the paper coating comprises: a hydrophilic polymer, b) an organophilic clay, c) a surfactant stabilizer, and d) a light white mineral oil having selected properties.
    Type: Grant
    Filed: September 6, 2002
    Date of Patent: November 30, 2004
    Assignee: Hercules Incorporated
    Inventors: Mohand Melbouci, L. Drake Walsh
  • Patent number: 6809132
    Abstract: A composition is composed of a hydrophobically modified polyacetal-polyether (HM-PAPE) or comb hydrophobically modified polyacetal-polyether (comb HM-PAPE) and a viscosity suppressing agent of cyclodextrins or derivatives thereof. A method for improving the pumpability and pourability of aqueous solutions of HM-PAPE or comb HM-PAPE is provided by admixing a cyclodextrin with the HM-PAPE or comb HM-PAPE to form a complex of the cyclodextrin and HM-PAPE or comb HM-PAPE where the viscosity of the HM-PAPE or comb HM-PAPE is suppressed and adding the complexed admixture to an aqueous system containing a water-insoluble polymer wherein the cyclodextrin is decomplexed and the HM-PAPE or comb HM-PAPE becomes an effective thickener. An example of the uses for this composition and method is in film forming coatings such as latex paints.
    Type: Grant
    Filed: October 29, 2001
    Date of Patent: October 26, 2004
    Assignee: Hercules Incorporated
    Inventor: Arjun C. Sau
  • Patent number: 6806810
    Abstract: A seat belt shifter lock microprocessor system is used with a vehicle having an automatic transmission for preventing the shifting from park gear position into a moving gear position of the vehicle until the driver and all passengers are properly secured into their seats and the driver depresses the brake.
    Type: Grant
    Filed: January 24, 2003
    Date of Patent: October 19, 2004
    Inventor: Orlando C. Robinson
  • Patent number: 6752947
    Abstract: A method of forming a thermally bonded, nonwoven polypropylene fabric is provided and includes passing a web of thermally bondable skin-core polypropylene fibers through a calender nip under heat and pressure to produce a nonwoven fabric having elongation. The patterned calender roll is embossed with a plurality of spaced and staggered lands particularly dimensioned, configured and oriented to provide the desired bonding spot size and spacing between the bonding spots such that when utilized in the calender roll, an improved soft polypropylene fabric or cover sheet having a high elongation results.
    Type: Grant
    Filed: July 16, 1998
    Date of Patent: June 22, 2004
    Assignee: Hercules Incorporated
    Inventors: William Robert Lanigan, Richard J. Legare, Shiv Sibal
  • Patent number: 6682672
    Abstract: Spinnerette including a plate including a plurality of capillaries which have capillary ends with dividers which divide each capillary end into a plurality of openings, and a process of making polymeric fiber. The process includes passing a molten polymer through a spinnerette comprising a plurality of capillaries which have capillary ends with dividers which divide each capillary end into a plurality of openings so that the molten polymer is formed into separate polymeric fibers for each opening or the molten polymer is formed into partially split fiber for each capillary, and quenching the molten polymer to form polymeric fiber.
    Type: Grant
    Filed: June 28, 2002
    Date of Patent: January 27, 2004
    Assignee: Hercules Incorporated
    Inventor: Kunihiko Takeuchi
  • Patent number: 6620769
    Abstract: This invention provides a water-free oil based fluid polymer suspension composition for use as a rheology modifier and fluid loss reducer in oil or gas well servicing fluids. It has been found that by using white medicinal oil as a carrier, high solids content and environmental friendly anhydrous fluidized polymer suspensions of xanthan gum, cellulose ethers, guar gum and derivatives thereof can be prepared. More specifically, in one aspect, an oil-based fluid polymer suspension (FPS) composition for use in oil or gas well servicing fluids is preferred containing: a) a hydrophilic polymer, b) an organophilic clay, c) a stabilizer, and d) a white medicinal oil having selected properties.
    Type: Grant
    Filed: November 21, 2000
    Date of Patent: September 16, 2003
    Assignee: Hercules Incorporated
    Inventors: Herbert L. Juppe, Robert P. Marchant, Mohand Melbouci
  • Patent number: 6602994
    Abstract: A method for producing derivatized microfibrillar polysaccharide, including but not limited to cellulose, derivatized by steric and/or electrostatic forces, where the electrostatic forces are provided by anionic charge or by a combination of both anionic and cationic charge, by stabilizing and/or microfibrillating a polysaccharide starting material. A method of modifying the rheological properties of a composition of matter using derivatized microfibrillar polysaccharide. Method of improving coatings, paper manufacture, and the stability of emulsions, dispersions, and foams using a derivatized microfibrillar polysaccharide. Compositions that include derivatized microfibrillar polysaccharide, including paper compositions, comestible compositions, non-comestible spreadable compositions, and emulsions, dispersion, and foams.
    Type: Grant
    Filed: February 10, 1999
    Date of Patent: August 5, 2003
    Assignee: Hercules Incorporated
    Inventors: Mary Jean Cash, Anita N. Chan, Herbert Thompson Conner, Patrick Joseph Cowan, Robert Alan Gelman, Kate Marritt Lusvardi, Samuel Anthony Thompson, Frank Peine Tise
  • Patent number: 6592901
    Abstract: A pharmaceutical dosage form composition is composed of an ethylcellulose that has an ethoxyl range lower limit of 49.6%, an a viscosity of less than 53 cps and at least one active pharmaceutical ingredient. This dosage form is highly compressible and compactible forming harder tables or pellets with better release retardation than comparable prior art tablets.
    Type: Grant
    Filed: October 15, 2001
    Date of Patent: July 15, 2003
    Assignee: Hercules Incorporated
    Inventors: Thomas Durig, Ronald Haywood Hall, Richard A. Salzstein
  • Patent number: 6590050
    Abstract: The present invention relates to compositions and use of water-soluble or water-dispersible copolymers for oil field applications. Specifically, the present invention relates to polymers containing allyloxy linkage andits functional dervatives for use in oil field applications as fluid additives for drilling and cementing processes.
    Type: Grant
    Filed: August 20, 2002
    Date of Patent: July 8, 2003
    Assignee: Hercules Incorporated
    Inventors: Keith A. Bair, Fu Chen, Mohand Melbouci, Teng-Shau Young, De-Kai Loo
  • Patent number: 6562090
    Abstract: A fluid abrasive suspension composition has an abrasive, suspending vehicle, and a water-swellable or water-soluble polymer. This composition is used to make a stable dentifrice formulation.
    Type: Grant
    Filed: August 28, 2000
    Date of Patent: May 13, 2003
    Assignee: Hercules Incorporated
    Inventors: Mohand Melbouci, Jashawant J. Modi
  • Patent number: 6512090
    Abstract: Asphalt emulsions containing emulsifiers comprising alkali metal or ammonium salts of solidified pyrolytic wood tar oil. Resinous compositions useful as asphalt emulsifiers comprising: (a) solidified pyrolytic wood tar oil and salts thereof, and (b) rosins and salts thereof.
    Type: Grant
    Filed: November 15, 2000
    Date of Patent: January 28, 2003
    Assignee: Hercules Incorporated
    Inventors: Richard Robert Suchanec, Norman Leroy Kennedy
  • Patent number: 6465587
    Abstract: The present invention relates to compositions and use of water-soluble or water-dispersible copolymers for oil field applications. Specifically, the present invention relates to polymers containing allyloxy linkage and its functional dervatives for use in oil field applications as fluid additives for drilling and cementing processes.
    Type: Grant
    Filed: December 8, 2000
    Date of Patent: October 15, 2002
    Assignee: Hercules Incorporated
    Inventors: Keith A. Bair, Fu Chen, Mohand Melbouci, Teng-Shau Young, De-Kai Loo
  • Patent number: 6369132
    Abstract: Fine particulate thermoplastic polymers [e.g., hydrophobically modified polyether-polyurethanes, polyacrylates, polyvinyl alcohol, polyether-polyols, polyacrylamide, aminoplast-polyethers and poly(acetal- or ketal-polyethers] having reduced bulk density, process of making same by dissolving the polymer and rapidly insolubilizing the polymer from the solution and process of using aqueous suspensions of such polymers as thickeners for aqueous systems.
    Type: Grant
    Filed: October 17, 1997
    Date of Patent: April 9, 2002
    Assignee: Hercules Incorporated
    Inventor: Arjun Chandra Sau
  • Patent number: 6358525
    Abstract: A pharmaceutical composition has a blend of at least first and second components and a medicament in a sufficient amount to be therapeutic where the first component is hydroxypropylcellulose (HPC) and the second component is at least one other polymer selected from the group consisting of methylcellulose (MC), ethylhydroxyethylcellulose (EHEC), hydroxyethylmethylcellulose (HEMC), hydrophobically modified hydroxyethylcellulose (HMHEC), hydrophobically modified ethylhydroxyethylcellulose (HMEHEC), carboxymethylhydroxyethylcellulose (CMHEC), carboxymethyl hydrophobically modified hydroxyethylcellulose (CMHMHEC), guar, pectin, carrageenan, agar, algin, gellan gum, acacia, starch and modified starches, co-polymers of carboxyvinyl monomers, co-polymers of acrylate or methacrylate monomers, mono- and co-polymers of oxyethylene and oxypropylene and mixtures thereof and a medicament in a sufficient amount to be therapeutic, with the proviso that low-substituted hydroxypropylcellulose (L-HPC) is excluded from said firs
    Type: Grant
    Filed: June 30, 1999
    Date of Patent: March 19, 2002
    Assignee: Hercules Incorporated
    Inventors: Jian Hwa Guo, George William Skinner
  • Patent number: 6258342
    Abstract: An improved process for preparing an oral care composition of mixing at least one dry oral care ingredient and a dry water-soluble or water-swellable polymer, the improvement is by replacing the dry, water-soluble or water-swellable polymer with a particulate water-soluble or water-swellable polymer which has been at least partially agglomerated by treatment with water or an aqueous solution of polymer(s) and drying the agglomerated particles.
    Type: Grant
    Filed: November 3, 1999
    Date of Patent: July 10, 2001
    Assignee: Hercules Incorporated
    Inventors: Weldon Wright Harcum, Jashawant J. Modi