Diversey, Inc.

Ceraver S.a.

Compagnie Francaise De Produits

Louis Cot

Jean-Henri Durand

Bernard Parant

William Granier

Joseph Schapira

Victor Ken

Patrice Pelletier

Christian Guizard

Andre Larbot

Francis Gugliermotte

Christian Hoessler

Jean-Andre Alary

Chemical conversion bath with zinc characterized by the fact that it comprises, besides the conventional constituents, an effective amount of fluorophosphate ion of the formula:

Bath and process for the chemical conversion of metal substrates with

The present invention relates to a method of manufacturing a medium for microfiltration, for ultrafiltration, or for reverse osmosis, wherein hydrolysis is performed on an alkoxide, an organo-metallic compound, or a metal salt of an organic or an inorganic acid, optionally dissolved in an anhydrous organic solvent, in order to obtain a sol of particles of the oxide or of the hydroxide of the corresponding chemical element, a thickening agent is added to the sol, and the resulting sol is slip cast onto a support layer having pores which are larger than pores desired for the filter medium, the thin layer deposited on the support medium is then dried, and then heat treated to eliminate the thickening agent and to sinter the particles of the deposited thin layer. The thickening agent is added to the sol in conjunction with a strong acid whose anion does not form a complex with ions of the oxide or hydroxide metal, and the slip casting is performed by mere putting into contact without filtering.

Method of manufacturing a medium for microfiltration, for

Steel, aluminum and aluminum alloys, zinc and zinc alloys are treated to improve corrosion resistance with an aqueous solution of a fluorophosphate salt to passivate the metal surface, before or after phosphatizing and prior to painting.

Process for treatment of metallic surfaces by means of fluorophosphate

Compositions for treatment of metallic surfaces by means of

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Montpellier, France

Louis Cot