Steel plate bonding process and primer composition

Details Steel plate bonding process and primer composition Steel plate bonding process and primer composition

1974-02-14

1976-02-03

Drummond, Douglas J.

Adhesive bonding and miscellaneous chemical manufacture

Methods

Surface bonding and/or assembly therefor

156335, 260831, 428416, 428457, 428460, 428474, B32B 1508, B32B 2734, B32B 2738

Patent

active

039363422

ABSTRACT:
A process for bonding steel sheets, e.g., into metallic cans, which comprises applying first a primer comprising 0.1 to 2.5 weight parts of a bisphenol type A epoxy resin having a mean molecular weight of more than about 800, preferably 2000 to 4000, and 1 weight part of thermosetting phenolic resin, which is obtained by heating an aqueous solution comprising phenol, orthocresol and formaldehyde in the presence of a catalyst and reacting them with each other under refluxing conditions, on the surface of the steel sheets, heating the resultant steel sheets, and then bonding the steel sheets with a polyamide, and a primer composition for use in the process.

REFERENCES:
patent: 3409581 (1968-11-01), Hagan, Jr.
patent: 3663354 (1972-05-01), Veno et al.
patent: 3773589 (1973-11-01), Kaiser et al.

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