Cleaning and liquid contact with solids – Processes – For metallic – siliceous – or calcareous basework – including...
Patent
1977-08-25
1978-07-18
Kellogg, Arthur D.
Cleaning and liquid contact with solids
Processes
For metallic, siliceous, or calcareous basework, including...
134 3, 134 41, 252149, C03C 2300
Patent
active
041013395
ABSTRACT:
An improved chromium-free zinc surface treatment provides for contacting the surface with an aqueous solution of a thiourea compound and a vegetable tannin at a pH value of from 2 to 6.5. Corrosion resistance and paint receptivity of the surface are enhanced.
REFERENCES:
patent: 2050355 (1936-08-01), McCollam et al.
patent: 2959555 (1960-11-01), Martin et al.
patent: 3294695 (1966-12-01), Tippett
patent: 3468804 (1969-09-01), Perry
Kaneko Hideaki
Miyazaki Yasushi
Suzuki Masanori
Cleeboe Bertram F.
Kellogg Arthur D.
Kluegel Arthur E.
Mueller Richard P.
Oxy Metal Industries Corporation
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