Patents Assigned to Hercules
  • Precoat resin dispersion for tufted carpets
    Patent number: 4640953
    Abstract: Disclosed is a precoat resin dispersion having a solids content from about 63% to about 69% comprising (1) at least one resin having a Ring and Ball softening point from about 60.degree. C. to about 100.degree. C. in an aqueous dispersion having a solids content from about 53% to about 58%; (2) at least one water-soluble polymer; (3) at least one cationic resin; and (4) water. The precoat resin dispersion is useful in the manufacture of tufted carpets, especially carpets manufactured with carboxylated latices as a backcoat.
    Type: Grant
    Filed: July 3, 1984
    Date of Patent: February 3, 1987
    Assignee: Hercules Incorporated
    Inventor: Raymond W. Goss
  • Capped printing plate making machine
    Patent number: 4638758
    Abstract: A capped printing plate making machine is used for making flexographic capped printing plates. The machine includes a pair of troughs for applying two layers of photopolymerizable resin materials simultaneously. The troughs are so designed that actuation of one trough to permit its material to be applied automatically results in the other trough being positioned and opened for the application of its material.
    Type: Grant
    Filed: February 15, 1985
    Date of Patent: January 27, 1987
    Assignee: Hercules Incorporated
    Inventor: William Bloothoofd
  • Pavement breaking apparatus
    Patent number: 4634311
    Abstract: An apparatus for impacting on a hard surface such as concrete so as to break up the hard surface. This apparatus comprises a frame having a bed and an upstanding rail assembly projecting from the bed, a drive shoe, a hammer means attached to the rail assembly so as to be movable in only one direction and operatively connected to the drive shoe for impacting upon the drive shoe. The drive shoe lies adjacent the surface so that upon impact from the hammer means, the shoe forcefully impacts the surface so as to break up the surface. An adjustment means is used to selectively position the drive shoe relative to the hammer means.
    Type: Grant
    Filed: February 20, 1985
    Date of Patent: January 6, 1987
    Assignee: Hercules Machinery Corporation
    Inventors: John W. Jinnings, Orrin H. Jinnings
  • Acetylene compounds as shelf life improvers for photoresist compositions containing organic iodides
    Patent number: 4631247
    Abstract: Disclosed are shelf life improvers for photoresist compositions containing organic halides as the photoinitiator that comprise an acetylene compound having the general formula RC.tbd.CR' where R and R' are each independently phenyl, hydrogen, benzyl, vinyl, lower alkyl substituted vinyl, phenyl substituted vinyl, lower alkoxy methyl and phenoxymethyl.
    Type: Grant
    Filed: August 9, 1985
    Date of Patent: December 23, 1986
    Assignee: Hercules Incorporated
    Inventor: Frank P. Tise
  • Branched polyolefin as a quench control agent for spin melt compositions
    Patent number: 4626467
    Abstract: A method for minimizing air-quench dependency and improving tolerance to high speed spinning of polyolefin spin melt compositions by incorporating an active amount of polyolefin additive having a Branching Index of about 0.20-0.90; plus corresponding spin melt composition and yarn product.
    Type: Grant
    Filed: December 16, 1985
    Date of Patent: December 2, 1986
    Assignee: Hercules Incorporated
    Inventor: Barry J. Hostetter
  • Thermoplastic elastomers containing cross-linked epihalohydrin rubbers
    Patent number: 4624989
    Abstract: Disclosed is a thermoplastic elastomer containing a cross-linked polyepihalohydrin rubber made by simultaneously cross-linking the rubber and blending the rubber with a crystalline polyolefin in the presence of a chlorinated hydrocarbon having a chlorine content of about 20% to about 70% by weight.
    Type: Grant
    Filed: January 31, 1986
    Date of Patent: November 25, 1986
    Assignee: Hercules Incorporated
    Inventor: Dominic A. Berta
  • Opaque liquid hand soap
    Patent number: 4617148
    Abstract: Disclosed is an opaque liquid composition suitable for use as a soap, primarily a liquid hand soap, which is thickened with a water-soluble polymer, such as, hydroxyethyl cellulose or hydroxypropyl guar.
    Type: Grant
    Filed: June 6, 1984
    Date of Patent: October 14, 1986
    Assignee: Hercules Incorporated
    Inventor: Susan J. Shields
  • Tire containing improved liner
    Patent number: 4616686
    Abstract: Disclosed are crosslinking compositions having both sulfur and nonsulfur curative systems which are particularly adapted for crosslinking rubber blends of (a) from about 35% to about 85% halobutyl rubber or a mixture of butyl rubber and halobutyl rubber wherein the halobutyl rubber is at least 50% by weight of the mixture and (b) from about 15% to about 65% of an epihalohydrin rubber, and the rubber materials crosslinked therewith. The rubber materials crosslinked with these crosslinking compositions have an excellent balance of cure rate, cure state and scorch safety; have improved tire carcass adhesion and good impermeability to gases; and are useful in tire inner tubes and inner liners.
    Type: Grant
    Filed: January 13, 1986
    Date of Patent: October 14, 1986
    Assignee: Hercules Incorporated
    Inventor: Dominic A. Berta
  • Tire containing improved liner
    Patent number: 4616687
    Abstract: Disclosed are vulcanized compositions of (1) from about 80% to about 99% of a rubber material selected from the group consisting of butyl rubber, halogenated butyl rubber having from about 1% to about 3% by weight of halogen and mixtures thereof, and (2) from about 1% to about 20% of a chlorinated hydrocarbon polymer having a chlorine content of from about 30% to about 70% by weight of chlorine, said composition having good impermeability to gases and tear resistance and being useful in tire inner tubes and inner liners.
    Type: Grant
    Filed: January 13, 1986
    Date of Patent: October 14, 1986
    Assignee: Hercules Incorporated
    Inventor: Dominic A. Berta
  • Coating compositions
    Patent number: 4613520
    Abstract: Described are coating compositions having improved antistatic properties and particularly magnetic coating compositions suitable for magnetic recording media. The compositions comprise at least one film-forming synthetic resin and, based on coating solids, from about 0.2 to about 10% of an alkali, alkaline earth, ammonium or amine salt of a perfluoroalkyl sulfonic acid or carboxylic acid.
    Type: Grant
    Filed: January 25, 1985
    Date of Patent: September 23, 1986
    Assignee: Hercules Incorporated
    Inventor: Sunil P. Dasgupta
  • Composition for preparing paperboard container for liquids
    Patent number: 4613635
    Abstract: Disclosed is a composition useful for preparing paperboard containers comprising wood pulp, polyolefin pulp containing carboxylic functionality and a water-soluble cationic wet-strength resin. The paperboard is used for preparing containers for liquids such as juices and dairy products. The filled containers have improved durability when exposed to high humidity.
    Type: Grant
    Filed: April 8, 1985
    Date of Patent: September 23, 1986
    Assignee: Hercules Incorporated
    Inventor: Peter G. Bither
  • Enhancement of emulsification rate using combined surfactant composition
    Patent number: 4609415
    Abstract: Method for facilitating the formation and stability of invert water-in-oil emulsion blasting agents by use of a combination of certain surfactants; and corresponding formulations.
    Type: Grant
    Filed: January 19, 1984
    Date of Patent: September 2, 1986
    Assignee: Hercules Incorporated
    Inventor: Richard V. Cartwright
  • Method of minimizing untoward effect of contaminants, such as pitch, in the papermaking operation
    Patent number: 4608123
    Abstract: Disclosed is a method of minimizing the untoward effect of contaminants, such as pitch and related materials, in the papermaking operation. An aqueous dispersion of water-dispersible synthetic pulp, such as polypolyolefin pulp, is added to a pulp slurry comprised of cellulosic pulp, at a point prior to sheet formation. The synthetic pulp adsorbs a substantial amount of the pitch present in the pump slurry and prevents it from depositing on the papermaking apparatus.
    Type: Grant
    Filed: February 20, 1985
    Date of Patent: August 26, 1986
    Assignee: Hercules Incorporated
    Inventor: Robert J. Leahy
  • Phosphazene flame retardants for reaction injection molded poly(dicyclopentadiene)
    Patent number: 4607077
    Abstract: Poly(dicyclopentadiene) made with an olefin metathesis catalyst system by a Reaction Injection Molding process is improved by adding flame retardant compounds.
    Type: Grant
    Filed: May 7, 1985
    Date of Patent: August 19, 1986
    Assignee: Hercules Incorporated
    Inventors: Paul A. Silver, Alexander Lukacs, III
  • Wet strength resin from methylbis(aminopropyl)amine, oxalic acid ester, saturated aliphatic diester and epihalohydrin
    Patent number: 4605709
    Abstract: Disclosed are novel wet strength resins for paper, said resins being derived by reacting an epihalohydrin, such as epichlorohydrin, with a polyamino-copolyamide derived by reacting methylbisaminopropylamine with (a) a diester of oxalic acid and (b) a diester of a saturated dicarboxylic acid containing at least 4 carbon atoms, the mole ratio of (a) to (b) being from about 0.25:1 to about 10:1.
    Type: Grant
    Filed: January 8, 1985
    Date of Patent: August 12, 1986
    Assignee: Hercules Incorporated
    Inventor: William W. Maslanka
  • Plasticizing compositions for polyvinylchloride
    Patent number: 4605694
    Abstract: Disclosed are plasticized compositions comprising polyvinylchloride, a trimellitate ester, and a pentaerythritol alkanoic acid ester.
    Type: Grant
    Filed: October 31, 1985
    Date of Patent: August 12, 1986
    Assignee: Hercules Incorporated
    Inventor: John F. Walker
  • Chemical case bond system with azido compound bonding
    Patent number: 4604248
    Abstract: A method of bonding propellant to a rocket motor casing using the nitrene insertion reaction is disclosed.
    Type: Grant
    Filed: January 31, 1985
    Date of Patent: August 5, 1986
    Assignee: Hercules Incorporated
    Inventor: Henry C. Dehm
  • Gelled aqueous compositions
    Patent number: 4604217
    Abstract: Disclosed are gelled aqueous compositions having (1)(a) a water thickening amount of an anionic or nonionic water soluble polymer in fresh water or brine solutions at a pH of greater than 10; (b) a water thickening amount of an anionic water soluble polymer having carboxylate functionality and a cellulose backbone in brine solutions at an acidic pH; or (c) a water thickening amount of (i) an anionic water soluble polymer having carboxylate functionality and a cellulose backbone or (ii) a copolymer of sodium acrylate having from about 10% to about 90% acrylate content, in brine solutions at neutral to about 10 pH; and (2) a water soluble cationic poly(diallylamine)-epichlorohydrin resin in an amount sufficient to cause gelation and form the gelled composition. The compositions are useful in the recovery of oil and gas by fracturing and as a matrix plugging agent in enhanced oil recovery.
    Type: Grant
    Filed: September 13, 1984
    Date of Patent: August 5, 1986
    Assignee: Hercules Incorporated
    Inventors: Carl Lukach, Shao-Tang Sun
  • Metallizable polypropylene film
    Patent number: 4604322
    Abstract: This invention relates to the preparation of metallizable, biaxially oriented polypropylene films which exhibit good adhesion to metal coatings, but which, at the same time, have surface properties whereby they are readily machine handleable for processing.
    Type: Grant
    Filed: August 6, 1985
    Date of Patent: August 5, 1986
    Assignee: Hercules Incorporated
    Inventor: Donald E. Reid
  • Composition for making cellular thermoset polymerized dicyclopentadiene polymer
    Patent number: 4604408
    Abstract: A composition for making a cellular thermoset polymer comprised of polymerized units of dicyclopentadiene monomer. The composition includes dicyclopentadiene, a catalyst, and a blowing agent.
    Type: Grant
    Filed: June 17, 1985
    Date of Patent: August 5, 1986
    Assignee: Hercules Incorporated
    Inventor: Norman R. Newburg, deceased