Process for removing carbon deposits using microemulsion cleaners

Patent 5401325 Issued on March 28, 1995. Estimated Expiration Date:

July 29, 2013. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Patent References

2418909

Method for preparing microemulsions
Patent #: 4146499
Issued on: 03/27/1979
Inventor: Rosano

Hard surface cleaning composition
Patent #: 4689168
Issued on: 08/25/1987
Inventor: Requejo

Additive for engine cooling system
Patent #: 5100571
Issued on: 03/31/1992
Inventor: Hartman

High temperature flashpoint, stable cleaning composition Patent #: 5112516
Issued on: 05/12/1992
Inventor: Koetzle

Inventors

Assignee

Drew Chemical Corporation

Application

No. 099997 filed on 07/29/1993

US Classes:

134/39, Carbon removal134/38, Paints, varnishes, lacquers, or enamels, removal134/40Oils, grease, tar, or wax removal, by dissolving

Examiners

Primary: Lieberman, Paul
Assistant: McGinty, Douglas J.

Attorney, Agent or Firm

Hedden; David L.

International Classes

C23G 005/06
B08B 003/08
C11D 001/83

Abstract

This invention relates to a process for removing oil, grease, and baked-on carbon deposits from metal surfaces with microemulsion cleaners comprising (a) an organic solvent (b) a surfactant blend comprising an anionic and nonionic surfactant (c) a glycol ether (d) morpholine, and (e) water.