Title: Chromium containing coating

Abstract: A chromium-containing treating composition, which is especially useful for rinsing phosphatized metal surfaces, contains hexavalent chromium-containing compound, methylene chloride and a substance that can be acetamide, N,N-dimethylformamide, acetone oxime and mixtures thereof. The composition is a homogeneous solution that is particularly useful where aqueous systems may create potential water pollution problems.

Do you think this is a good invention? Vote now:

Votes so far: For:(0) Against:(0)
Other info:

Inventors: Cawley, William H. (Painesville, OH, US)
Rowe, Jr., Edward A. (Cheshire, CT, US)

Application Number: 951858
Filing Date: 1978-10-16
Publication_date: 1980-01-29
Assignee: Diamond Shamrock Corporation (Cleveland, OH)
Primary Class(es): 148/249
Other Classes:
US Patent Ref:

2270386	Jan, 1942	Sloan	260/438.
2480754	Aug, 1949	McCarthy	260/438.
3437531	Apr, 1969	Svadlenak	148/6.
3556824	Jan, 1971	Demo	148/6.
3719534	Mar, 1973	Vessey	148/6.
3929521	Dec, 1975	Ohr et al.	148/6.

Other Refs: 14470041198324

Jun, 1966	FR
Jul, 1970	GB

Primary Examiner: Kendall, Ralph S.
Assistant Examiner:
Attorney: Freer; John J.