Metal treatment – Process of modifying or maintaining internal physical... – Processes of coating utilizing a reactive composition which...
Patent
1989-04-28
1990-09-18
Woo, Jay H.
Metal treatment
Process of modifying or maintaining internal physical...
Processes of coating utilizing a reactive composition which...
1062864, 10628719, 106436, C23C 1602
Patent
active
049575686
ABSTRACT:
Activation of metal surfaces prior to phosphating can be improved by using aqueous dispersions of polymeric titanium(IV) phosphates in which at least 95% by weight of the polymeric particles have a particle diameter of less than 200 nm. This low particle diameter is attained by adding a titanium(IV)-complexing agent before or during an otherwise conventional reaction between a titanium(IV) compound, acid or phosphate, and water. The complexing agent is used in an amount of less than the stoichiometric amount, based on the titanium(IV) content. The best complexing agents are poly(aldehydocarboxylic acids), 1,1-diphosphonic acids, and/or the alkali metal salts of these types of acids.
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POC Degussa, Umweltfreundliche Polycarbonsafuren mit Vielfaltigen Anwendungsmoglichkeiten.
Brands Karl-Dieter
Christophliemk Peter
Endres Helmut
Riesop Joerg
Roland Wolf-Achim
Durkin II Jeremiah F.
Henkel Kommanditgesellschaft auf Aktien
Jaeschke Wayne C.
Szoke Ernest G.
Wisdom, Jr. Norvell E.
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