Patents Assigned to Polygulf Associates
  • Patent number: 4105811
    Abstract: A method is disclosed for protecting aluminum and aluminum alloys by the chemical bonding of a polymerized coating to the aluminum oxide on the aluminum surface. The protective coating is graft polymerized from a solution onto the aluminum in the presence of a small amount of silver ion as an initiator. A peroxide is present during the graft polymerization to regenerate silver ions and to catalyze polymerization of monomers and prepolymers which attach to the aluminum surface. The monomers are vinyl monomers containing one or more hydroxy, carboxy, glycidyl and aziridinyl groups. The prepolymers are polyurethane resins and aliphatic, cycloaliphatic and aromatic epoxy resins. The vinyl monomers and prepolymers are cross-linked to provide a transparent, impervious protective coating on the aluminum. The coated aluminum article made by the above method is also disclosed.
    Type: Grant
    Filed: February 7, 1975
    Date of Patent: August 8, 1978
    Assignee: PolyGulf Associates
    Inventors: Carl Horowitz, Michael Dichter, Duryodhan Mangaraj
  • Patent number: 4051090
    Abstract: For securing together elastomeric substrates in surface-to-surface contact an adhesive for interposing between the substrates includes elastomer, a prepolymer or a polymerizable monomer, and a graft initiator. Molecular grafting occurs between the elastomer of the adhesive and the elastomer of both of the substrates, and after curing the layer of adhesive forms an integral assembly with the substrates, to result in a bonding strength which is much higher than is obtainable with known surface adhesives. The adhesive is of particular utility in bonding new tread bands to tire casings in the re-capping of used automobile tires.
    Type: Grant
    Filed: December 23, 1974
    Date of Patent: September 27, 1977
    Assignee: Polygulf Associates
    Inventors: Carl Horowitz, Michael Dichter, Navinchandra Bhogilal Shah
  • Patent number: 4033852
    Abstract: Novel modified coal products, which are more easily liquified as compared to natural coal, are produced by a process comprising activating coal with free radical or ionic catalyst systems and thereafter, reacting the activated coal with vinyl monomers to attach polymeric side chains to the coal.
    Type: Grant
    Filed: June 26, 1975
    Date of Patent: July 5, 1977
    Assignee: Polygulf Associates
    Inventors: Carl Horowitz, Michael Dichter