Patents Assigned to Hercules
  • Patent number: 6159503
    Abstract: A composition comprising a dry cationic pectin salt which when suspended in water swells to heat stable particles having a mean equivalent diameter greater than 100 micrometers. Food, cosmetic, superabsorbent and skin adhesive compositions containing the dry cationic pectin salt. A process for making the dry cationic pectin salt having the steps: a) converting a pectin starting material into a pectinate in a liquid medium, b) drying the pectinate, and c) selecting conditions in steps (a) and/or (b) that allow for the production of pectinate which when suspended in water swells to heat stable particles having a mean equivalent diameter greater than 100 micrometers.
    Type: Grant
    Filed: December 2, 1993
    Date of Patent: December 12, 2000
    Assignee: Hercules Incorporated
    Inventor: Poul-Egede Glahn
  • Patent number: 6146497
    Abstract: Additives for addition to starting materials in cellulose based products for imparting strength and crepe. Additives for use in paper production which impart strength to the product and which can be used in creping adhesives. Enzyme activated resins for use in paper production. Enzyme-activated adhesives for use in paper production. Paper products comprising the aforementioned additives or resins. Methods for imparting strength or crepe to paper products.
    Type: Grant
    Filed: January 16, 1998
    Date of Patent: November 14, 2000
    Assignee: Hercules Incorporated
    Inventor: Tuyen T. Nguyen
  • Patent number: 6143822
    Abstract: A composition comprising:(a) polyethylene;(b) as a scorch inhibitor, 1,1-diphenylethylene, substituted or unsubstituted;(c) optionally, a cure booster; and(d) an organic peroxide.
    Type: Grant
    Filed: March 18, 1999
    Date of Patent: November 7, 2000
    Assignees: Union Carbide Chemicals & Plastics Technology Corporation, Hercules Incorporated
    Inventors: Paul Joseph Caronia, Michael John Keogh, John Salvatore Furno, Laurence Herbert Gross, Frederick F. Nelson, Tuyen T. Nguyen, Atanu Biswas
  • Patent number: 6143800
    Abstract: Compositions and methods for inhibiting the deposition of organic contaminants from pulp in pulp and papermaking systems are disclosed. The methods add to the pulp or to the deposition prone surface of the papermaking systems a composition comprising a dinonyl sulfosuccinate anionic surfactant which is used in systems containing multivalent cations, preferably calcium ions. The methods also utilize a blend of dioctyl sulfosuccinate and didecyl sulfosuccinate anionic surfactants.
    Type: Grant
    Filed: January 30, 1998
    Date of Patent: November 7, 2000
    Assignee: Hercules Incorporated
    Inventors: Duy T. Nguyen, J. Barry Wright, Daniel Michalopoulos
  • Patent number: 6143346
    Abstract: A process is provided for treating a solution, gel, or suspension of pectin starting material having a degree of esterification greater than about 60% with a cation-containing preparation to obtain at least a first fraction having a higher degree of calcium sensitivity and a second fraction having a lower degree of calcium sensitivity than said pectin starting material. The resultant composition has a degree of esterification greater than about 60% and a ratio of calcium sensitive pectin to the sum of calcium sensitive pectin and non-calcium sensitive pectin greater than about 0.60. Compositions using citrus pectin have a degree of esterification less than about 80% and a ratio on non-calcium sensitive pectin to the sum of calcium sensitive pectin and non-calcium sensitive pectin greater than about 0.60. These compositions are used, for example, in admixture with foodstuffs, in personal hygienic devices, and in cosmetics.
    Type: Grant
    Filed: December 2, 1993
    Date of Patent: November 7, 2000
    Assignee: Hercules Incorporated
    Inventor: Poul-Egede Glahn
  • Patent number: 6138867
    Abstract: A towelette container and a closure for the towelette container that includes a well that is sized and shaped to contain a portion of a towelette extending out of the container and that further includes a selectively movable cover having an opening defined therein that, when brought into alignment with the well, permits access to a towelettes.
    Type: Grant
    Filed: May 4, 1999
    Date of Patent: October 31, 2000
    Assignee: Hercules Chemical Company Incorporated
    Inventor: Stanley K. Stelmack
  • Patent number: 6133386
    Abstract: Metal oxide solid acids are used as catalysts for the polymerization of a feed stream containing at least one of pure monomer (e.g., styrene based monomers), C5 monomers, and C9 monomers to produce hydrocarbon resins. Freely-associated water may be removed from the solid acid catalyst prior to use. Resins with softening points (Ring and Ball) in the range of about 5.degree. C. to 170.degree. C. can be prepared. These catalysts offer advantages over the traditional Friedel-Crafts polymerization catalysts since the acid sites are an integral part of the solid. The solid acid catalysts are relatively nonhazardous, reusable catalysts which eliminate or at least reduce contamination of the resulting resin products with acid residues or by-products.
    Type: Grant
    Filed: January 7, 1998
    Date of Patent: October 17, 2000
    Assignee: Hercules Incorporated
    Inventors: Dennis G. Morrell, Laura M. Babcock
  • Patent number: 6133405
    Abstract: Water soluble polyalkanolamides and a process to prepare same by reacting polycarboxylic acid or its anhydride, ester or halide derivative with at least one alkanolamine and optionally with a polyamine and removing the condensation byproduct water, alcohol or hydrogen halide.
    Type: Grant
    Filed: July 10, 1997
    Date of Patent: October 17, 2000
    Assignee: Hercules Incorporated
    Inventor: Anthony J. Allen
  • Patent number: 6124124
    Abstract: Composition comprising oxidizable galactose type of alcohol configuration containing polymer (such as guar) which is in solid state and galactose oxidase. Application of such oxidized polymers in the papermaking process results in superior paper strength characteristics.
    Type: Grant
    Filed: December 31, 1997
    Date of Patent: September 26, 2000
    Assignee: Hercules Incorporated
    Inventors: Richard Lee Brady, Raymond Thomas Leibfried, Sr., Tuyen Thanh Nguyen
  • Patent number: 6123760
    Abstract: Compositions and methods useful stabilizing dispersions containing paper sizing agents are provided. The dispersions comprise a hydrophobically modified water-soluble polymer having a viscosity average molecular weight less than about 200,000. Dispersions containing sizing agents and other agents for treating paper can be made according to the methods of the invention.
    Type: Grant
    Filed: October 28, 1998
    Date of Patent: September 26, 2000
    Assignee: Hercules Incorporated
    Inventor: Daniel Felix Varnell
  • Patent number: 6121439
    Abstract: A coating composition is composed of a water-soluble polysaccharide composition comprising at least one hydrophobic group selected from aryl, alkyl, alkenyl, aralkyl and mixtures thereof and at least one quaternary ammonium salt group, both connected to a polysaccharide backbone by covalent bonds. This coating is used for improving the leveling of waterborne paints.
    Type: Grant
    Filed: July 27, 1998
    Date of Patent: September 19, 2000
    Assignee: Hercules Incorporated
    Inventor: Gijsbert Kroon
  • Patent number: 6117546
    Abstract: A yarn comprising linear low density polyethylene fiber and nonmelting fiber or fiber having a melting point higher than the linear low density polyethylene fiber, and structures made therefrom.
    Type: Grant
    Filed: October 8, 1997
    Date of Patent: September 12, 2000
    Assignee: Hercules Incorporated
    Inventors: James D. Geiman, Rakesh K. Gupta, Randall E. Kozulla, Richard J. Legare, Robert G. MacLellan
  • Patent number: 6113891
    Abstract: There are disclosed stable fluidized polymer suspensions containing cationic polysaccharide, stabilizing agent and emollient. The preferred cationic polysaccharides are cationic guar and cationic hydroxypropyl guar, and preferred emollients are hydrocarbons, silicone oils and esters. Processes for preparing personal care compositions utilizing the fluidized polymer suspensions are also disclosed. Using the fluidized polymer suspensions in the processes provides the advantages of more rapid dissolution and avoidance of lumps and gels when compared to using dry, powdered cationic polysaccharides.
    Type: Grant
    Filed: November 20, 1998
    Date of Patent: September 5, 2000
    Assignee: Hercules Incorporated
    Inventors: Charles Lee Burdick, Jacobus Johannes deBruin, Hans Hofman, Mohand Melbouci
  • Patent number: 6111032
    Abstract: A process for preparing a tertiary amine polyamidoamine-epihalohydrin polymer having a low level of epihalohydrin byproducts. In this process a tertiary amine polyamidoamine prepolymer is reacted with an epihalohydrin; the molar ratio, of epihalohydrin to tertiary amine groups in the polyamidoamine prepolymer, is less than 1.0 to 1.0. The reaction is further conducted at a pH of from about 7.5 to less than about 9.0, in the presence of a nonhalide acid, and at a temperature of not more than about 35.degree. C.
    Type: Grant
    Filed: May 4, 1998
    Date of Patent: August 29, 2000
    Assignee: Hercules Incorporated
    Inventor: Barton K. Bower
  • Patent number: 6106939
    Abstract: The invention provides a petroleum-based aliphatic resin having: a) a Ring and Ball (R&B) softening point in the range of about 75 to about 110.degree. C., b) a weight average molecular weight (Mw) of about 1000 to about 2600 Dalton, a z-average molecular weight (Mz) from about 1900 to about 5000 Dalton and an Mw/Mn below about 2.0, c) a level of aromatic protons below about 1.5% with respect to the total protons determined by .sup.1 H-NMR, and d) a mixed methylcyclohexane aniline cloud point (MMAP) of about 90.degree. C. or less. The resins according to the invention are characterized by a high amount of cyclic structures. Further disclosed is a method of independently controlling the R&B softening point and the molecular weight of an aliphatic resin composition during its preparation by polymerization of a petroleum-based feed, the method being characterized in that the amount of cyclic structures in the resins is increased.
    Type: Grant
    Filed: March 3, 1997
    Date of Patent: August 22, 2000
    Assignee: Hercules Incorporated
    Inventors: Christiaan Pieter Donker, Berend Lenselink, Michael Hendrikus Theelen
  • Patent number: 6103861
    Abstract: An ionic thermosettable resin useful for imparting wet and dry strength to paper is made by: (a) providing a copolymer comprising monomer units derived by copolymerization of acrylamide or alkyl-substituted acrylamide and diallylamine or an acid salt thereof; and (b) reacting the copolymer with epihalohydrin or epihalohydrin equivalent and dialdehyde. Paper products made using the resin are more easily repulped than paper products made with conventional wet strength resins.
    Type: Grant
    Filed: December 19, 1997
    Date of Patent: August 15, 2000
    Assignee: Hercules Incorporated
    Inventors: Ronald Richard Staib, Joseph Raymond Fanning, William Walter Maslanka
  • Patent number: 6103814
    Abstract: Disclosed are hot-melt adhesive compositions suitable for the manufacture of soft goods. They have a melt viscosity of 60,000 mPa.s or less at a temperature of 120.degree. C. and include: (a) 50 to 150 parts by weight of a styrenic block copolymer or mixtures and/or modified and/or hydrogenated derivatives thereof; (b) 20 to 450 parts by weight of a tackifying resin which, when incorporated into a reference composition, leads to the following properties:a tan .delta. value of 3.5 or less, wherein tan .delta. is defined as the ratio between the loss modulus and the storage modulus of said composition andan elastic retention on spandex fibers (300%) or natural latex rubber (200%) after 4 h at 40.degree. C. of 70% or more; anda crossover temperature of 95.degree. C. or less.Further disclosed are novel partially hydrogenated hydrocarbon resins which are useful as tackifying resins and have the following properties: (a) a R&B softening point (R&B) of 50.degree. C. to 150.degree. C.
    Type: Grant
    Filed: April 10, 1997
    Date of Patent: August 15, 2000
    Assignee: Hercules Incorporated
    Inventors: Jan vanDrongelen, Johannes Cornelis M. Simons
  • Patent number: 6093769
    Abstract: There are disclosed stable fluidized polymer suspensions containing cationic polysaccharide, stabilizing agent and water-soluble polyol. The preferred cationic polysaccharides are cationic guar and cationic hydroxypropyl guar. Processes for preparing personal care compositions utilizing the fluidized polymer suspensions are also disclosed. Using the fluidized polymer suspensions in the processes provides advantages of more rapid dissolution and avoidance of lumps and gels when compared to using dry, powdered cationic polysaccharides.
    Type: Grant
    Filed: November 19, 1997
    Date of Patent: July 25, 2000
    Assignee: Hercules Incorporated
    Inventors: Charles Lee Burdick, Mohand Melbouci, Hans Hofman, Jacobus Johannes deBruin
  • Patent number: 6087446
    Abstract: Masterbatches comprising high density polyethylene (HDPE) are used for the production of polyolefin articles, particularly films. Employing HDPE in a masterbatch alone or in combination with a hydrocarbon resin and/or a polyolefin ultimately results in extruded polyolefin articles of optimal stiffness and ductility. Employing a high density polyethylene in combination with a hydrocarbon resin and a polyolefin in a masterbatch causes the masterbatch to solidify more rapidly and be pelletized more efficiently.
    Type: Grant
    Filed: March 20, 1996
    Date of Patent: July 11, 2000
    Assignee: Hercules Incorporated
    Inventor: Daniel W. Klosiewicz
  • Patent number: 6083492
    Abstract: A solid stick, underarm product composition is composed of a liquid vehicle, an antiperspirant salt, a dibenzylidene alditol gelling agent, and a co-gelling agent of a hydrophobically modified water soluble polysaccharide polymer which comprises a water soluble polysaccharide polymer backbone, a hydrophobic moiety of C.sub.8 -C.sub.24 alkyl, aryl alkyl, alkyl aryl groups and mixtures thereof, wherein the hydrophobic moiety is present in an amount up to the amount which renders said polysaccharide less than 1% by weight soluble in water, and dibenzylidene alditol, antiperspirant active and a liquid vehicle. This underarm product can be either clear or hazy.
    Type: Grant
    Filed: December 17, 1998
    Date of Patent: July 4, 2000
    Assignee: Hercules Incorporated
    Inventor: Jashawant J. Modi