Claims
- 1. An aqueous solution for conversion coating a metal surface consisting essentially of from about 0.05% to 20% an anionic polyacrylamide copolymer, from about 0.05% to 20%. a surfactant and from about 0.1% to 10% ammonium hexafluorotitanate.
- 2. The aqueous solution of claim 1 wherein said surfactant is a nonionic or cationic surfactant.
Parent Case Info
This is a divisional of application Ser. No. 08/307,970, filed Sep. 16, 1994, now U.S. Pat. No. 5,457,270, which is a continuation-in-part of Ser. No. 08/213,414, filed Mar. 15, 1994, now U.S. Pat. No. 5,401,333.
US Referenced Citations (6)
Divisions (1)
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Date |
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307970 |
Sep 1994 |
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Continuation in Parts (1)
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213414 |
Mar 1994 |
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