Coating processes – With post-treatment of coating or coating material – Liquid extraction of coating constituent or cleaning coating
Patent
1990-09-26
1991-11-05
Schofer, Joseph L.
Coating processes
With post-treatment of coating or coating material
Liquid extraction of coating constituent or cleaning coating
4273884, 427421, 427428, 427435, 524413, 524424, 524431, 524434, 524437, 524543, 2041802, B05D 300
Patent
active
050630890
ABSTRACT:
A metal treatment solution comprising an effective amount of a soluble or dispersible compound which is a derivative of a polyphenol. The present invention comprises novel derivatives of polyphenol compounds useful in the treatment of the surface of metal articles. The present invention also encompasses novel surface treatment solutions or dispersions, and methos of using these solutions or dispersions. The compositions of the present invention include amine oxide containing polyphenol compounds and derivatives thereof. The molecular weight of the polyphenols used in derivatives of the present invention have molecular weights of from about 360 to about 30,000 or greater. The resulting derivatives of the present invention typically have a molecular weight of up to about 2,000,000 with molecular weights within the range of about 700 to about 70,000 being preferred.
REFERENCES:
patent: 4517028 (1985-05-01), Lindert
patent: 4544727 (1985-10-01), Ema et al.
Official Gazette 1046 TMOG 2, Sep. 4, 1984.
Lindert Andreas
McCormick David R.
Pierce John R.
Henkel Corporation
Jaeschke Wayne C.
Sarofin N.
Schofer Joseph L.
Szoke Ernest G.
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