The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 20, 1981
Filed:
Mar. 14, 1979
Joseph M Guarnery, Libertyville, IL (US);
William R Watt, Princeton Junction, NJ (US);
American Can Company, Greenwich, CT (US);
Abstract
A method for the high speed coating of various substrates utilizes an epoxy composition containing a radiation-sensitive catalyst precursor which will decompose upon exposure to electromagnetic radiation to provide a Lewis acid effective to induce cationic polymerization of the epoxy composition. The formulation does not require any special epoxy monomeric materials or accelerators and is stable until so exposed. Subsequent to applying the formulation to the substrate, the coating is exposed to electromagnetic radiation and a controlled temperature of 50.degree.-90.degree. C. is maintained in the coating for a limited period of time to effect polymerization of the formulation to a tack free surface condition within a period of less than 30 seconds. Maintenance at the elevated temperature following initiation of irradiation may be for a period of as little as 0.5 second.