Patents Assigned to Hi-Tek Polymers, Inc.
  • Water reducible epoxy-amine adducts based on the diglycidyl ether of cyclohexane dimethanol
    Patent number: 5310770
    Abstract: Water-reducible curing agents for epoxy resins are made from the diglycidyl ether of cyclohexane dimethanol and a diamine selected from the group consisting of meta-xylylene diamine, isophorone diamine, diaminocyclohexane and 1,3-bisaminomethyl cyclohexane.
    Type: Grant
    Filed: December 30, 1992
    Date of Patent: May 10, 1994
    Assignee: Hi-Tek Polymers, Inc.
    Inventors: William J. DeGooyer, George A. Roy, II
  • Vernonia oil modification of epoxy resins
    Patent number: 5227453
    Abstract: High solids coating compositions are made from organic solvent solutions of the reaction product of a diglycidyl ether of a dihydric phenol, vernonia oil and a dihydric phenol.
    Type: Grant
    Filed: February 10, 1992
    Date of Patent: July 13, 1993
    Assignee: Hi-Tek Polymers, Inc.
    Inventors: Jim D. Elmore, William J. DeGooyer, Mary B. Tipton, John H. Kaiser
  • Bis(4-cyanatophenyl)-1,1-ethane
    Patent number: 5162574
    Abstract: Bis(4-cyanatophenyl)-1,1-ethane, a low viscosity liquid, is useful in wet filament winding, resin transfer molding and pultrusion processes.
    Type: Grant
    Filed: September 13, 1990
    Date of Patent: November 10, 1992
    Assignee: Hi-Tek Polymers, Inc.
    Inventor: Wallace M. Craig, Jr.
  • Citric ester diluents
    Patent number: 5157089
    Abstract: Citric ester compositions wherein the ester components contain about 1.5 to about 3 hydroxyl groups per molecule are useful as pigment grinding vehicles and as reactive diluents for thermosetting coatings.
    Type: Grant
    Filed: May 13, 1991
    Date of Patent: October 20, 1992
    Assignee: Hi-Tek Polymers, Inc.
    Inventors: Jimmy D. Elmore, Elizabeth G. Zylla, George A. Roy, II
  • Low temperature curable dicyanate esters of dihydric phenols
    Patent number: 5149863
    Abstract: Cyanate esters of 4,4'-[1,3-phenylenebis(1-methylethylidene)] 2,2',6,6'-R-bisphenol when properly catalyzed, can be cured at temperatures in the range of about 250.degree. to about 300.degree. F. to obtain percent cyclotrimerization of the cyanate ester groups of at least 80 percent.
    Type: Grant
    Filed: August 12, 1991
    Date of Patent: September 22, 1992
    Assignee: Hi-Tek Polymers, Inc.
    Inventors: David A. Shimp, Jeffrey T. Vanderlip
  • Citric ester diluents
    Patent number: 5089658
    Abstract: Citric ester compositions wherein the ester components contain about 1.5 to about 3 hydroxyl groups per molecule are useful as pigment grinding vehicles and as reactive diluents for thermosetting coatings.
    Type: Grant
    Filed: September 27, 1990
    Date of Patent: February 18, 1992
    Assignee: Hi-Tek Polymers, Inc.
    Inventors: Jimmy D. Elmore, Elizabeth G. Zylla
  • Low temperature curable dicyanate ester of dihydric phenol composition
    Patent number: 5068309
    Abstract: Cyanate esters of 4,4'-[1,3-phenylenebis (1-methylethylidene)] 2,2',6,6'-R-bisphenol when properly catalyzed, can be cured at temperatures in the range of about 250.degree. to about 300.degree. F. to obtain percent cyclotrimerization of the cyanate ester groups of at least 80 percent.
    Type: Grant
    Filed: March 29, 1990
    Date of Patent: November 26, 1991
    Assignee: Hi-Tek Polymers, Inc.
    Inventors: David A. Shimp, Jeffrey T. Vanderlip
  • Stable acrylic copolymer dispersions
    Patent number: 5061742
    Abstract: Stable aqueous acrylic resin dispersions are made from a dispersion in water of the reaction product of a carboxylic acid containing acrylic resin and a diglycidyl ether of a polyoxyalkylene glycol.
    Type: Grant
    Filed: May 16, 1990
    Date of Patent: October 29, 1991
    Assignee: Hi-Tek Polymers, Inc.
    Inventor: Michael M. Miller
  • Dual action sunscreen composition
    Patent number: 5009969
    Abstract: Dual action sunscreen compositions capable of both moisturizing the skin and protecting it from sunburn are made from a cationic guar, a cationic acrylic polymer and an ultraviolet absorbing sunscreening agent.
    Type: Grant
    Filed: May 26, 1989
    Date of Patent: April 23, 1991
    Assignee: Hi-Tek Polymers, Inc.
    Inventor: Gary A. Miller
  • Polycyanate esters of polyhydric phenols blended with thermoplastic polymers
    Patent number: 4983683
    Abstract: Curable compositions are made from blends of polycyanate ester of polyhydric phenols and amorphous, aromatic thermoplastic resins which are initially soluble in the polycyanate ester but which phase separate during curing of the polycyanate ester.
    Type: Grant
    Filed: November 6, 1989
    Date of Patent: January 8, 1991
    Assignee: Hi-Tek Polymers, Inc.
    Inventor: David A. Shimp
  • Polymers made from quaternary ammonium acrylic monomers
    Patent number: 4973637
    Abstract: Quaternary ammonium containing monomers, represented by the formula: ##STR1## wherein R.sub.1 is H or methyl, R.sub.2 is an alkyl group containing 6 to 22 carbon atoms, D is an alkylene group containing 1 to 4 carbon atoms, or a hydroxylalkylene group containing 2 to 4 carbon atoms and X is an anion, are polymerized to form polymers useful in hair care preparations.
    Type: Grant
    Filed: February 22, 1990
    Date of Patent: November 27, 1990
    Assignee: Hi-Tek Polymers, Inc.
    Inventors: Michael E. Morgan, Martha A. Phelps
  • Thermosetting acrylic copolymers modified with citric esters
    Patent number: 4972036
    Abstract: Modified acrylic copolymer compositions are made by polymerizing acrylic monomers in admixture with a citric ester. Such compositions are useful as pigment grinding vehicles and as vehicles for thermosetting coatings.
    Type: Grant
    Filed: August 28, 1989
    Date of Patent: November 20, 1990
    Assignee: Hi-Tek Polymers, Inc.
    Inventors: Jim D. Elmore, Elizabeth G. Zylla, William J. DeGooyer
  • Process for forming stable emulsions of water soluble polysaccharides in hydrocarbon liquids
    Patent number: 4964999
    Abstract: Stable emulsion are made from hydrocarbon liquids, water and a water-soluble polysaccharide, plus a fatty acid alkanol amide surfactant. These emulsions are readily dispersed in water to form viscous solutions useful in the clarification of waste waters, in paper making operations and in oil service operations.
    Type: Grant
    Filed: November 7, 1988
    Date of Patent: October 23, 1990
    Assignee: Hi-Tek Polymers, Inc.
    Inventor: Donald P. Russo
  • Aqueous epoxy resin-acrylic resin coating compositions containing also phenoxy, novolac and resole resin combination
    Patent number: 4963602
    Abstract: Heat curable coating compositions particularly suitable as coatings for metal can ends are made from aqueous dispersions of epoxy resins, acrylic resins which are copolymers of polymerizable acids and other monomers, phenoxy resins, alkylated phenol novolac resins and resol resins.
    Type: Grant
    Filed: November 13, 1989
    Date of Patent: October 16, 1990
    Assignee: Hi-Tek Polymers, Inc.
    Inventor: Hirendra K. Patel
  • Process for derivatizing polygalactomannan using water soluble aluminum salts in the process
    Patent number: 4959464
    Abstract: In an aqueous process for derivatizing polygalactomannan gums, the derivatized product prior to washing is reacted with a water soluble aluminum salt. The resulting products hydrate readily under alkaline pH conditions.
    Type: Grant
    Filed: November 7, 1988
    Date of Patent: September 25, 1990
    Assignee: Hi-Tek Polymers, Inc.
    Inventor: Michael H. Yeh
  • Method for reducing the viscosity of aqueous fluid
    Patent number: 4941537
    Abstract: The viscosity of aqueous fluids thickened with a tertiary amino polygalactomannan is reduced by the addition of an alkali metal or alkaline earth metal salt of hypochlorous acid, or a chlorinated isocyanurate.
    Type: Grant
    Filed: June 22, 1989
    Date of Patent: July 17, 1990
    Assignee: Hi-Tek Polymers, Inc.
    Inventors: Paul W. Langemeier, Martha A. Phelps, Michael E. Morgan
  • Stable solutions of prepolymers of thiodi(phenylcyanate) and laminating method employing same
    Patent number: 4940848
    Abstract: Stable prepolymer solutions are made from partially cyclotrimerized 4,4'-thiodi(phenylcyanate) dissolved in cyclopentanone. The prepolymer solutions are used to make flame retardant and thermally stable laminates.
    Type: Grant
    Filed: November 10, 1988
    Date of Patent: July 10, 1990
    Assignee: Hi-Tek Polymers, Inc.
    Inventor: David A. Shimp
  • Flame retardant polycyanate ester blend
    Patent number: 4931545
    Abstract: Flame retardant thermoset compositions having excellent water absorption resistance, caustic resistance, and low dielectric constants are made from blends of the dicyanate ester of 4,4'-(hexafluoroisopropylidene) bisphenol and a different polycyanate ester of a polyhydric phenol.
    Type: Grant
    Filed: May 3, 1989
    Date of Patent: June 5, 1990
    Assignee: Hi-Tek Polymers, Inc.
    Inventors: David A. Shimp, Steven J. Ising
  • Process for the reduction of free epichlorohydrin in epoxy compounds
    Patent number: 4924013
    Abstract: A process for the reduction of free epichlorohydrin in epoxy compounds which involves the treatment of an epoxy compound with an alkali metal sulfite, preferably sodium sulfite.
    Type: Grant
    Filed: July 22, 1988
    Date of Patent: May 8, 1990
    Assignee: Hi-Tek Polymers, Inc.
    Inventor: Joe M. Hunter
  • Quaternary ammonium acrylic monomers and alcohol soluble polymers made therefrom
    Patent number: 4918228
    Abstract: Quaternary ammonium containing monomers, represented by the formula: ##STR1## wherein R.sub.1 is H or methyl, R.sub.2 is an alkyl group containing 6 to 22 carbon atoms, D is an alkylene group containing 1 to 4 carbon atoms, or a hydroxyalkylene group containing 2 to 4 carbon atoms and X is an anion, are polymerized to form polymers useful in hair care preparations.
    Type: Grant
    Filed: February 23, 1989
    Date of Patent: April 17, 1990
    Assignee: Hi-Tek Polymers, Inc.
    Inventors: Michael E. Morgan, Martha A. Phelps