Patents Assigned to Hercules
  • Patent number: 6315865
    Abstract: Silyl-linked polyamidoamines, and aqueous compositions including these resins, which have utility in wet strength, dry strength, creping, and glass fiber forming size applications. The resins also are useful as strength additives for paper that contains silicate mineral fillers and/or glass fibers.
    Type: Grant
    Filed: February 25, 1999
    Date of Patent: November 13, 2001
    Assignee: Hercules Incorporated
    Inventors: Anthony John Allen, Arjun C. Sau
  • Patent number: 6294645
    Abstract: The invention relates to resin systems useful for imparting dry-strength to paper without substantially increasing the paper's wet-strength wherein the resin system comprises a cationic component and an anionic component. The invention also relates to the process for incorporating these resin systems into paper and the paper produced containing the resin systems.
    Type: Grant
    Filed: July 25, 1997
    Date of Patent: September 25, 2001
    Assignee: Hercules Incorporated
    Inventors: Anthony J. Allen, Elliott Echt, William W. Maslanka, Jeffrey C. Peters
  • Patent number: 6290999
    Abstract: A food composition, product and method of making thereof uses tissue, such as vegetable, meat, fish or poultry. The tissue is coated with at least one coating, dried and fried. Initially the coating is a gel including water, hydrocolloid gel forming compounds and a cross-linking agent such as polyvalent cations. The coating at least partially encloses the outer surface of the tissue. The coating is dried prior to frying. The coating (initial, dried and fried) includes at least ten percent equivalent weight of cross-linking agent based on the neutralization equivalent weight of the hydrocolloid. The dried coating is adapted to substantially impede the penetration of oil therethrough. The coated fried products have a low concentration of cooking oil.
    Type: Grant
    Filed: February 3, 1997
    Date of Patent: September 18, 2001
    Assignee: Hercules Incorporated
    Inventors: Timothy C. Gerrish, Lawrence E. Carosino
  • Patent number: 6280571
    Abstract: Composition comprising at least one water soluble polymer, such as polyamidoamine-epichlorohydrin resin, polyamine-epichlorohydrin resin, polyvinyl alcohol, etc. and at least one stabilizer, such as hypophosphorous acid, phosphorous acid, hypodiphosphoric acid, etc. and salts thereof, suitable as creping adhesive for paper.
    Type: Grant
    Filed: August 17, 1998
    Date of Patent: August 28, 2001
    Assignee: Hercules Incorporated
    Inventor: Anthony John Allen
  • Patent number: 6277925
    Abstract: Curable polymer compositions comprising a crosslinkable polymeric component; an initiator component; and an allyl compound component.
    Type: Grant
    Filed: March 18, 1999
    Date of Patent: August 21, 2001
    Assignees: Hercules Incorporated, Plastics Technology Corporation
    Inventors: Atanu Biswas, Paul Joseph Caronia, John Salvatore Furno, Laurence Herbert Gross, Michael John Keogh, Frederick F. Nelson, Tuyen T. Nguyen
  • Patent number: 6273997
    Abstract: Discloses is a method for sizing paper at a pH of about 5.0 to about 8.5 by incorporating a sizing composition consisting essentially of (a) rosin, (b) at least one hydrocarbon resin, (c) a cationic component consisting essentially of a cationic polyamine resin at a weight ration of the rosin/hydrocarbon resin blend to cationic polyamine of about 5:1 to about 1:2, and (d) up to 0.3% alum. The cationic polyamine resin is selected from the group consisting of polyalkyleneamine-epihalohydrin resins, polyalkyleneamine-dicyandiamide-epihalohydrin resins, poly(diallylamine•HCl)-epihalohydrin resins, poly(methyldiallylamine•HCl)-epihalohydrin resins, epihalohydrin-modified polyethyleneimine resins, amine-modified poly(methyldiallylamine•HCl)-epihalohydrin resins, and mixtures thereof.
    Type: Grant
    Filed: July 17, 2000
    Date of Patent: August 14, 2001
    Assignee: Hercules Incorporated
    Inventors: Susan M. Ehrhardt, D. Bruce Evans
  • Patent number: 6268414
    Abstract: Paper sizing compositions comprising (a) cellulose-reactive size, (b) dispersant system comprising primary anionic dispersant, and secondary dispersant selected from cationic and/or non-ionic dispersant, and (c) inorganic salt.
    Type: Grant
    Filed: April 16, 1999
    Date of Patent: July 31, 2001
    Assignee: Hercules Incorporated
    Inventor: Tingdong Lin
  • Patent number: 6261618
    Abstract: A method and composition for preparing battered and breaded food compositions which resist absorbing oil during deep fat frying. The breading composition is prepared by enriching the breading formulation with calcium. This is accomplished by either dry blending, spray drying or agglomerating (e.g., spray coating or application with subsequent drying), by baking the calcium source into the bread crumb or any combination of the above. The battered and breaded food composition is then treated, with a solution of calcium reactive pectin. The calcium-pectin coating functions to significantly impede the absorption and adsorption of frying oil, increases the moisture content, the crispness and heat lamp stability of the food composition. Alternatively, the food may first be treated with the calcium reactive pectin and then the calcium source, depending upon the circumstances of use.
    Type: Grant
    Filed: November 5, 1996
    Date of Patent: July 17, 2001
    Assignee: Hercules Incorporated
    Inventors: Timothy Gerrish, Camille Higgins, Kay Kresl
  • 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
  • Patent number: 6255395
    Abstract: Masterbatch including at least about 65 wt % of resin having a R&B softening point as measured in accordance with ASTM 28-67. The masterbatch also includes a carrier polymer having a peak melting temperature, as measured by DSC, up to about 20° C. greater than the R&B softening point of the resin. A masterbatch pellet made by a method, including mixing a resin having a R&B softening point as measured in accordance with ASTM 28-67, and a carrier polymer having a peak melting temperature, as measured by DSC, up to about 20° C. greater than the R&B softening point of the resin, to form masterbatch composition including at least about 65 wt % of resin. The method of making the masterbatch pellet also includes pelletizing the masterbatch composition into masterbatch pellet. Methods of making a masterbatch, methods for making polymer product, and a polymer product.
    Type: Grant
    Filed: March 22, 1999
    Date of Patent: July 3, 2001
    Assignee: Hercules Incorporated
    Inventor: Daniel W. Klosiewicz
  • Patent number: 6245874
    Abstract: A process for making paper with increased wet and dry strength by incorporating into the pulp suspension an ionic thermosettable resin which is the reaction product of dialdehyde and epihalohydrin, or epihalohydrin equivalent, with a copolymer containing monomer units derived by polymerization of monomers comprising acrylamide or alkyl-substituted acrylamide and diallylamine or an acid salt thereof. The paper has wet and dry strength greater than that of paper not containing the resin and has a higher repulpability index than wet strength paper that is essentially the same but contains conventional polyazetidinium ion containing wet strength resin instead of the ionic thermosettable resin.
    Type: Grant
    Filed: March 1, 2000
    Date of Patent: June 12, 2001
    Assignee: Hercules Incorporated
    Inventors: Ronald Richard Staib, Joseph Raymond Fanning, William Walter Maslanka
  • Patent number: 6245861
    Abstract: High vinyl styrene-butadiene rubber is cured through the use of organic peroxides. The organic peroxide may be used singly or in combination with sulfur curing ingredients to cure the high vinyl styrene-butadiene rubber wherein the organic peroxide to sulfur curing ingredient is at a molar ratio of from about 3:1 to about 1:3.
    Type: Grant
    Filed: September 10, 1998
    Date of Patent: June 12, 2001
    Assignee: Hercules Incorporated
    Inventor: Jay Bernard Class
  • Patent number: 6228217
    Abstract: This invention is directed to a process for preparing an aqueous papermaking suspension containing a polyelectrolyte complex comprising providing an aqueous suspension of pulp fibers containing a water-soluble cationic polymer and a water-soluble anionic polymer that are reactable in the aqueous suspension to form the polyelectrolyte complex, and a multivalent cation having at least a +3 charge, and forming the polyelectrolyte complex. It also includes the process wherein the aqueous suspension of pulp fibers contains surface active carboxyl compounds and water-soluble anionic compounds. It further includes the process wherein the aqueous papermaking suspension is sheeted and dried to obtain paper of improved strength.
    Type: Grant
    Filed: January 13, 1995
    Date of Patent: May 8, 2001
    Assignee: Hercules Incorporated
    Inventors: Jay A. Dickerson, Harry J. Goldy, Douglas C. Smith, Ronald R. Staib
  • Patent number: 6228219
    Abstract: Disclosed is a method for sizing paper at a pH of about 5.0-8.5 by incorporating a sizing composition consisting essentially of (1) rosin, (2) a cationic polyamine resin at a weight ratio of rosin to cationic polyamine of about 5:1 to about 1:2, and (3) up to 0.3% alum. The cationic polyamine resin is selected from the group consisting of polyalkyleneamine-epihalohydrin resins, polyalkyleneamine-dicyandiamide-epihalohydrin resins, poly(diallylamine.HCl)-epihalohydrin resins, poly(methyldiallylamine.HCl)-epihalohydrin resins, epihalohydrin-modified polyethyleneimine resins, amine-modified poly(methyldiallylamine.HCl)-epihalohydrin resins and mixtures thereof.
    Type: Grant
    Filed: September 14, 1999
    Date of Patent: May 8, 2001
    Assignee: Hercules Incorporated
    Inventors: Susan M. Ehrhardt, D. Bruce Evans
  • Patent number: 6221419
    Abstract: Provided is a pectin having (i) a degree of esterification (DE) of 60 to 95%, (ii) a calcium sensitivity (&Dgr;CS) of less than 25 cP, and (iii) a calcium sensitive pectin weight ratio (CSPR) of calcium sensitive pectin (CSP) to the sum of CSP and non-calcium sensitive pectin (NCSP) of 0.7 or more. Such pectin is useful as a stabilizing component of an aqueous acidic beverage, such as a drinking yogurt, which contains a suspension of protein particles formed from, e.g., casein. The pectin can be prepared by treating a substantially non-calcium sensitive pectin having a CSPR of 0.1 or less and a &Dgr;CS of 0-3 with a pectin deesterifying enzyme.
    Type: Grant
    Filed: November 5, 1998
    Date of Patent: April 24, 2001
    Assignee: Hercules Incorporated
    Inventor: Timothy C. Gerrish
  • Patent number: 6221428
    Abstract: A fiberized asphalt-type composition and method for increasing the structural stability and durability of fiber-reinforced asphalt-type surfaces without increasing concentration or length of fiber, by addition of an active amount of a special class of bicomponent fibers.
    Type: Grant
    Filed: August 25, 2000
    Date of Patent: April 24, 2001
    Assignee: Hercules Incorporated
    Inventor: James P. Modrak
  • Patent number: 6218588
    Abstract: The invention relates to aromatic modified aliphatic hydrocarbon resins giving excellent balance between tack and shear properties even at low coating weights. These resins are characterized in that they have a Ring and Ball (R&B) softening point of 94° C. or lower, a weight average molecular weight (Mw) of not more than 2000 Dalton, a Z-average molecular weight (Mz) of not more than 6000 Dalton and a mixed methylcyclohexane aniline cloud point (MMAP) between 25 and 45° C. The aromatic modified aliphatic hydrocarbon resins of the invention may be prepared by subjecting polymerization feeds containing petroleum feeds which comprise (a) C5 and C6 olefins and/or diolefins including cycloolefins, (b) aromatic monomers and (c) (di-)cyclodiolefins to a Friedel-Crafts polymerization. The invention is also directed to the use of the aromatic modified aliphatic hydrocarbon resins as mono-tackifiers in adhesive formulations as well as to an adhesive tape comprising these resins.
    Type: Grant
    Filed: February 8, 1999
    Date of Patent: April 17, 2001
    Assignee: Hercules Incorporated
    Inventors: Nicolaas Adriaan Dommisse, Christiaan Pieter Louis Charles Donker, Michael Hendrikus Theelen, Jacobus van Rijn, Gerard Arie Verrijzer
  • Patent number: 6217709
    Abstract: A composition comprising cationic starch, cationic galactomannan gum (such as cationic guar, locust bean and fenugreek gum) and acid suitable as drainage aid and strength additive in papermaking.
    Type: Grant
    Filed: November 23, 1998
    Date of Patent: April 17, 2001
    Assignee: Hercules Incorporated
    Inventor: Keith Edward Burnfield
  • Patent number: 6217903
    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 ethylcellulose (EC) 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, mono- and co-polymers of carboxyvinyl monomers, mono- and co-polymers of acrylate or methacrylate monomers, mono- and co-polymers of oxyethylene and oxypropylene and mixtures thereof. The medicament can be a variety of drugs or nutritional supplements.
    Type: Grant
    Filed: June 30, 1999
    Date of Patent: April 17, 2001
    Assignee: Hercules Incorporated
    Inventor: George William Skinner
  • Patent number: D445373
    Type: Grant
    Filed: June 5, 2000
    Date of Patent: July 24, 2001
    Assignee: Hercules Tire & Rubber Co.
    Inventor: Roger A. Wohlgamuth