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.
February 7, 1975
Date of Patent:
August 8, 1978
Carl Horowitz, Michael Dichter, Duryodhan Mangaraj
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.
December 23, 1974
Date of Patent:
September 27, 1977
Carl Horowitz, Michael Dichter, Navinchandra Bhogilal Shah
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.