Highly durable surface-conditioning agent

Details Highly durable surface-conditioning agent Highly durable surface-conditioning agent

1997-10-22

1999-06-01

Green, Anthony J.

Metal treatment

Process of modifying or maintaining internal physical...

Processes of coating utilizing a reactive composition which...

106 1412, 148253, C23C 2280

Patent

active

059085126

ABSTRACT:
The present invention provides a highly durable surface-conditioning agent for use in a pretreatment step for a phosphate coating treatment of metallic materials, which is an aqueous solution comprising 1 to 50 ppm of titanium ion, 50 to 1,000 ppm or phosphate ion, 50 to 400 ppm of tripolyphosphate ion and 20 to 1,500 ppm of carbonate ion, with a tripolyphosphate ion/titanium ion weight ratio of 10 to 100, and having a pH of 8.5 to 10.0.

REFERENCES:
patent: 4152176 (1979-05-01), Guhde
patent: 4497667 (1985-02-01), Vashi
patent: 4770717 (1988-09-01), Griffith et al.
patent: 5494504 (1996-02-01), Wright
patent: 5776265 (1998-07-01), Kramer et al.
Chemical Abstract No. 100:194075, abstract of Czech. Patent No. 202442, Mar. 1983.
Chemical Abstract No. 115:118396, abstract of Czech. Patent No. 265567, Dec. 1989.

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