Polyphenol compounds and treatment and after-treatment of metal,

Details Polyphenol compounds and treatment and after-treatment of metal, Polyphenol compounds and treatment and after-treatment of metal,

1993-07-08

1994-03-29

Schofer, Joseph L.

Coating processes

With post-treatment of coating or coating material

Heating or drying

4273935, 428500, 428461, B05D 302

Patent

active

052982890

ABSTRACT:
A composition for treatment and after treatment of surfaces, especially metals, with derivatives of polyphenol compounds is provided. The derivatives include substituted aminomethyl groups on at least some of the phenyl rings in the polyphenol polymers, with molecular weights within the range of about 700 to about 70,000 being preferred. The compositions are particularly useful for treating chromated aluminum surfaces prior to painting, to improve corrosion resistance, and when combined with surfactants, for treating plastic and painted surfaces to improve rinsability without water breaks.

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