Composition of the surface treatment for metal and the treatment

Details Composition of the surface treatment for metal and the treatment Composition of the surface treatment for metal and the treatment

1989-07-17

1990-10-30

Silverberg, Sam

Metal treatment

Process of modifying or maintaining internal physical...

Processes of coating utilizing a reactive composition which...

C23C 2226

Patent

active

049666347

ABSTRACT:
A treating composition for metallic surfaces is characterized by containing hexavalent chromium ions or hexavalent and trivalent chromium ions as inorganic compound, and acrylic-series polymer emulsion obtained by emulsion-polymerizing, by means of a nonionic emulsifying agent which is essentially free of anionic emulsifying agent and cationic emulsifying agent and which contains a polyoxyethylene-polyoxypropylene block polymer, and having a pH of 5 or less.

REFERENCES:
patent: 3909313 (1975-09-01), Kato
patent: 4637840 (1987-01-01), Fujii

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