Patents Assigned to Hercules
  • Process for making oleophilic staple fiber-reinforced pavement suitable for making and repairing a geoway and use thereof
    Patent number: 5665154
    Abstract: The invention provides polyolefin staple fibers especially useful for reinforcing pavement. The fibers have applied to their surface an amount of an antistatic finish sufficient to prevent the build-up of static electric charges when the staple fibers are fluidized or blown, and so diminish the resultant clumping of the blown fibers, while avoiding degradation of the nature of the fiber to adhere to paving compositions, and maintaining the adherence of the fibers to the pavement cement.
    Type: Grant
    Filed: November 15, 1996
    Date of Patent: September 9, 1997
    Assignee: Hercules Incorporated
    Inventor: James P. Modrak
  • Controlling premature curing of vulcanizable halogen-containing polymers
    Patent number: 5665830
    Abstract: A process of reducing the effects of moisture during storage prior to vulcanization of a vulcanizable halogen-containing polymer composition containing water, comprising blending before storage, into said vulcanizable composition, a thioester derivative of 2,5-dimercapto-1,3,4-thiadiazole crosslinking agent and polyethylene glycol, whereby the scorch time of the vulcanizable compound is not significantly affected by the water content of said composition. The invention is also directed to a vulcanizable halogen containing material and a dry pourable composition, both comprising the crosslinking agent and polyethylene glycol, as well as a process of reworking such a halogen-containing vulcanizable composition.
    Type: Grant
    Filed: July 22, 1996
    Date of Patent: September 9, 1997
    Assignee: Hercules Incorporated
    Inventor: Jay Bernard Class
  • Organosilicon polymers, and dyes, exhibiting nonlinear optical response
    Patent number: 5663308
    Abstract: Organosilicon polymers, including crosslinked polymers and crosslinkable prepolymers, of cyclic polysiloxane, organic dyes, and, optionally, polyenes. The dyes include those with delocalized Pi electron systems linking electron donor groups and electron acceptor groups, and with at least two carbon-carbon double bond-containing pendant groups attached to at least two different sites from among the indicated delocalized Pi electron systems, donor groups, and acceptor groups.
    Type: Grant
    Filed: February 7, 1994
    Date of Patent: September 2, 1997
    Assignee: Hercules Incorporated
    Inventors: Wayne Michael Gibbons, Robert Paul Grasso, Michael Kevin O'Brien, Paul Joseph Shannon, Shao-Tang Sun
  • Creping release agents
    Patent number: 5660687
    Abstract: A composition for creping fibrous webs comprises (1) a polyamine/epihalohydrin resin creping adhesive, and (2) a creping release agent that is a plasticizer for the polyamine/epihalohydrin resin and has a swelling ratio of at least 0.10 and a solubility parameter >20 MPa.sup.1/2. Also disclosed is a process for creping fibrous webs in which the creping adhesive and the release agent can be applied together or separately to a drying surface for the fibrous web.
    Type: Grant
    Filed: May 6, 1996
    Date of Patent: August 26, 1997
    Assignee: Hercules Incorporated
    Inventors: Anthony John Allen, George Lock
  • Polymeric retaining wall building block
    Patent number: 5658098
    Abstract: A polymeric retaining wall building block comprising a base, a generally upright face wall extending upward from the base, and two generally upright side walls extending upward from the base and generally rearward of the face wall. A fill receiving cavity is defined by inner surfaces of the base, face wall, and side walls for receiving fill material, such as earth, during construction of a retaining wall. The base, face wall, and side walls each have a mean thickness which is less than approximately 10% of the width of the block to maximize the volume of the fill receiving cavity, the width of the block being defined by the distance between outer surfaces of the side walls.
    Type: Grant
    Filed: July 26, 1995
    Date of Patent: August 19, 1997
    Assignee: Hercules Manufacturing, Inc.
    Inventor: Mark A. Woolbright
  • Lignin-containing resinous compositions
    Patent number: 5656733
    Abstract: Resinous compositions comprising lignin and polymerized rosin. Use of salts of the resinous compositions as concrete air-entraining agents and asphalt emulsifiers.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: August 12, 1997
    Assignee: Hercules Incorporated
    Inventor: Richard Robert Suchanec
  • Oligoamide-epichlorohydrin resins as drainage aids
    Patent number: 5656699
    Abstract: A water-soluble drainage-aid composition which is the reaction product of a bifunctional crosslinking agent which may be an epihalohydrin selected from the group consisting of epichlorohydrin or epibromohydrin, a 1,3-dihalo-2-propanol in which "halo" is chloro- or bromo-, or a glycidyl ester of an alkanesulfonic or arenesulfonic acid, and an oligoamide reaction product of a polyalkylene polyamine with a carboxylic acid selected from the group consisting of dicarboxylic acids containing between 5 and 10 carbons and their acyl halides, amides, and esters of alcohols having up to 6 carbon atoms, and tricarboxylic acids containing between 6 and 10 carbon atoms and their acyl halides, amides, and esters of alcohols having up to 6 carbon atoms, with a mole ratio of polyamine to dicarboxylic acid or its functional derivative between 1.
    Type: Grant
    Filed: April 18, 1994
    Date of Patent: August 12, 1997
    Assignee: Hercules Incorporated
    Inventors: Sunil Priya Dasgupta, Herbert Hastings Espy
  • Thermally bondable fiber for high strength non-woven fabrics
    Patent number: 5654088
    Abstract: Thermobondable fiber of at least one first component of polypropylene having a melt flow rate of 0.5-30, and at least one second component of polypropylene having a melt flow rate of 60-1000.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: August 5, 1997
    Assignee: Hercules Incorporated
    Inventors: Rakesh K. Gupta, James E. Mallory, Kunihiko Takeuchi
  • Method of making a medical device from ironically crosslinked polymer
    Patent number: 5650116
    Abstract: The present invention provides a method for making medical devices, especially stents, catheters, cannulas, plugs and constrictors, by treatment of ionically crosslinkable polymer compositions with crosslinking ions.
    Type: Grant
    Filed: March 18, 1996
    Date of Patent: July 22, 1997
    Assignee: Hercules Incorporated
    Inventor: Samuel Anthony Thompson
  • Aqueous suspensions of poly(ethylene oxide) useful as a flocculent
    Patent number: 5645731
    Abstract: A method is provided for using an aqueous suspension of at least 15% of poly(ethylene oxide)(PEO) as a flocculent. PEO is dispersed in an aqueous solution of at least one salt selected from the group consisting of sodium or potassium formate, sodium or potassium hydroxide, sodium or potassium citrate, sodium or potassium acetate, sodium chloride or mixtures thereof to form a poly(ethylene oxide) suspension having at least 15% of poly(ethylene oxide) by total weigh.
    Type: Grant
    Filed: August 26, 1996
    Date of Patent: July 8, 1997
    Assignee: Hercules Incorporated
    Inventors: Charles Lee Burdick, Elliott Echt
  • Dry pourable powder premix composition for inclusion in a halogen-containing vulcanizable polymer composition comprising thioester derivative of 2,5-dimercapto-1,2,4-thiadiazole crosslinking agent, glycerin and finely divided material
    Patent number: 5645757
    Abstract: A composition in the form of a dry pourable powder cure premix composition for inclusion in a halogen-containing vulcanizable polymer composition, comprising a thioester derivative of 2,5-dimercapto-1,3,4-thiadiazole crosslinking agent, glycerin and a pourable siliceous finely divided filler. The composition is useful for controlling premature curing of vulcanizable halogen-containing polymer compounds.
    Type: Grant
    Filed: May 25, 1995
    Date of Patent: July 8, 1997
    Assignee: Hercules Incorporated
    Inventor: Jay Bernard Class
  • Synthesis of high solids-content wet-strength resin
    Patent number: 5644021
    Abstract: Disclosed is an improvement in a method of making a water-soluble epichlorohydrin resin involving reacting epichlorohydrin with a polyaminoamide. The improvement involves preparing the polyaminoamide in the presence of an acid catalyst (low temperature condensation) followed by reaction with epichlorohydrin.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: July 1, 1997
    Assignee: Hercules Incorporated
    Inventor: William Ivalter Maslanka
  • No and low fat mayonnaise compositions
    Patent number: 5641533
    Abstract: A no and low fat mayonnaise or mayonnaise like composition includes a continuous aqueous phase containing a semi-gelled system comprising a non-amidated or amidated galacturonic acid methyl ester with a degree of esterification below 55% (LM pectin) to replace part or all of the fat in order to make a mayonnaise that has organoleptic characteristics that imitates real mayonnaise.
    Type: Grant
    Filed: August 9, 1995
    Date of Patent: June 24, 1997
    Assignee: Hercules Incorporated
    Inventor: Hans Christian Ambjerg Pedersen
  • Apparatus for cementless building of retreaded tires
    Patent number: 5635015
    Abstract: An Apparatus for applying cushion gum to a periphery of a tire casing without cement includes a conveyor having a forward roller near the tire casing. The conveyor is mounted on a carriage that is movable relative to its base so that the conveyor can be moved to contact the tire casing. The conveyor moves the cushion gum below an infrared heater to heat an interface side of the cushion gum to increase its tack and then moves the heated cushion gum between the forward roller and the tire casing. The forward roller of the conveyor applies the cushion gum to the periphery of the tire as the cushion gum exits the conveyor and first contacts the tire casing. A supply roller is provided to move the cushion gum from a supply roll to the rear end of the conveyor. A cutting mechanism is provided between the supply roller and the conveyor to selectively cut the cushion gum.
    Type: Grant
    Filed: March 29, 1995
    Date of Patent: June 3, 1997
    Assignee: Hercules Tire and Rubber Company
    Inventors: Trent F. Longo, Charles J. Wollenzier, Gordon T. Franks, Patrick J. Quinlan, Michael D. Shaffer
  • Enhancement of paper dry strength by anionic and cationic guar combination
    Patent number: 5633300
    Abstract: A process for making paper to enhance the dry strength of the paper produced without substantially reducing its softness comprising adding to a bleached pulp furnish, separately or together, (1) an anionic polymer selected from the group consisting of carboxymethyl guar, carboxymethyl bean gum, carboxymethyl hydroxyethyl guar, and a carboxymethyl hydroxypropyl guar, with (2) a cationic polymer selected from the group consisting of a cationic guar, a cationic acrylamide copolymer, a cationic bean gum, a cationic amineepichlorohydrin wet strength resin, and both a cationic wet strength resin and at least one of the other said cationic polymers, a composition for adding to a paper-making pulp slurry comprising the said polymers, a method for making the said composition, and a paper product containing the said composition, are disclosed.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: May 27, 1997
    Assignee: Hercules Incorporated
    Inventor: Sunil P. Dasgupta
  • Thermally bondable fiber for high strength non-woven fabrics
    Patent number: 5629080
    Abstract: Thermobondable fiber of at least one first component of polypropylene having a melt flow rate of 0.5-30, and at least one second component of polypropylene having a melt flow rate of 60-1000.
    Type: Grant
    Filed: January 13, 1993
    Date of Patent: May 13, 1997
    Assignee: Hercules Incorporated
    Inventors: Rakesh K. Gupta, James E. Mallory, Kunihiko Takeuchi
  • System for sizing paper and cardboard
    Patent number: 5626719
    Abstract: A process for increasing the resistance of the cut edges of liquid packaging board to penetration by hot hydrogen peroxide, comprising adding to an aqueous pulp slurry at a neutral to alkaline pH, either separately or in preblended form an aqueous emulsion of a cellulose-reactive size, a non-cellulose-reactive size selected from the group consisting of waxes, bis-stearamides, and fatty acid derivatives, and a thermosetting resin that is capable of covalent bonding to cellulose fibre and self-cross-linking.
    Type: Grant
    Filed: June 7, 1995
    Date of Patent: May 6, 1997
    Assignee: Hercules Incorporated
    Inventors: Anthony C. Tansley, John D. Ballantine
  • No and low fat salad dressing compositions
    Patent number: 5626901
    Abstract: A no and low fat salad dressing composition includes a continuous aqueous phase containing a semi-gelled pourable system comprising an amidated galacturonic acid methyl ester with a degree of esterification below 55% (LMA pectin) to replace part or all of the fat in order to make a salad dressing that has organoleptic characteristics that imitiate real salad dressing.
    Type: Grant
    Filed: August 9, 1995
    Date of Patent: May 6, 1997
    Assignee: Hercules Incorporated
    Inventor: Hans C. Ambjerg Pedersen
  • Process for the extraction of soluble polysaccharides
    Patent number: 5627269
    Abstract: Soluble polysaccharides such as pectin and carrageenan are extracted from vegetable matter by passing an extraction fluid through a fixed bed of the polysaccharide-containing vegetable material to simultaneously hydrolyze and extract the polysaccharide from the vegetable material and separate the polysaccharide-containing solution from the remaining solid vegetable material. No separate filtration step is required. A filler can optionally be added to the vegetable material to increase the rate of percolation of the extraction fluid through the bed.
    Type: Grant
    Filed: June 22, 1994
    Date of Patent: May 6, 1997
    Assignee: Hercules Incorporated
    Inventors: David C. Herak, John J. Hoglen
  • Method for preparing a fried potato food
    Patent number: 5620727
    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: January 13, 1993
    Date of Patent: April 15, 1997
    Assignee: Hercules Incorporated
    Inventors: Timothy C. Gerrish, Lawrence E. Carosino