Method for bonding steel plates and composition for use therein

Adhesive bonding and miscellaneous chemical manufacture – Methods – Surface bonding and/or assembly therefor

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156330, 156331, 156332, 156309, 220 81R, 427386, 427410, 428418, 428474, 428458, 428480, 528272, 528296, 528297, 525438, C09J 504

Patent

active

041690060

ABSTRACT:
A method for bonding steel plates with a polyamide adhesive, comprising applying a composition comprising (1) a polyester resin comprising the reaction product of (a) a polycarboxylic acid component comprising at least one of a polycarboxylic acid, an anhydride thereof, an ester thereof or a mixture thereof with (b) a polyhydric alcohol component comprising at least one polyhydric alcohol or a mixture thereof, with at least some of one of the polycarboxylic acid component and the polyhydric alcohol component being trivalent or higher, and (2) a bisphenol A-type epoxy resin, on a steel plate; baking the coating by heating; juxtaposing the coated steel plates to be bonded with a polyamide adhesive therebetween; and bonding the steel plates with the polyamide adhesive, a primer composition for use therein and a polyester resin for use in the primer composition.

REFERENCES:
patent: 2936296 (1960-05-01), Precopio et al.
patent: 3047525 (1962-07-01), Broadhead
patent: 3182041 (1965-05-01), Watkins et al.
patent: 3197439 (1965-07-01), Frey
patent: 3268483 (1966-08-01), Klootwijk et al.
patent: 4035436 (1977-07-01), Matsubara et al.

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