04404116 is referenced by 53 patents and cites 7 patents.

Improved liquid, urea-sulfuric acid compositions noncorrosive to stainless steel contain about 5 to about 75 weight percent urea, about 5 to about 85 weight percent sulfuric acid, 0 to about 75 weight percent water and a corrosion inhibiting amount of a cupric ion-containing compound, in which the urea and sulfuric acid together comprise at least about 25 weight percent of the composition, and in which at least a portion of the urea and sulfuric acid are present as monourea sulfate, diurea sulfate or combinations thereof. The compositions may also contain amounts of selected dialkylthioureas sufficient to reduce their corrosivity to carbon steel.

Title
Noncorrosive urea-sulfuric acid reaction products
Application Number
6/330904
Publication Number
4404116
Application Date
December 15, 1981
Publication Date
September 13, 1983
Inventor
Donald C Young
Fullerton
CA, US
Agent
Michael H Laird
Gregory F Wirzicki
Dean Sandford
Assignee
Union Oil Company of California
CA, US
IPC
C23F 11/18
C23F 11/16
C05C 9/00
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