Process for improving steel-epoxy adhesion

Details Process for improving steel-epoxy adhesion Process for improving steel-epoxy adhesion

1982-05-28

1984-05-15

Thomas, Alexander

Stock material or miscellaneous articles

Composite

Of epoxy ether

428418, 428457, 427302, 427327, 427386, 148 624, 148 614R, 156316, 156330, 526 62, B32B 2738

Patent

active

044488475

ABSTRACT:
The present invention is directed to a method for improving the adhesion of epoxy resins to steel substrates which comprises first removing the oxide surface layer, preferably by chemical means, and then pretreating the substrate with a solution of at least one coupling agent selected from the group consisting of .beta.-diketones and mercaptoesters. The invention also provides a method for improving the adhesion of epoxy resins to steel substrates by pretreating with citric acid or a salt thereof.

REFERENCES:
patent: 2640037 (1953-05-01), Parry et al.
patent: 2651589 (1953-09-01), Shokal et al.
patent: 2658885 (1953-11-01), D'Alelio
patent: 3336241 (1967-08-01), Shokal
patent: 3477990 (1969-11-01), Dante et al.
patent: 3756984 (1973-09-01), Klaren et al.
patent: 4059473 (1977-11-01), Okami

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