Inventors:
Helmut Franz - Pittsburgh PA
James H. Hanlon - Pittsburgh PA
Lloyd G. Shick - Natrona Heights PA
Assignee:
PPG Industries, Inc. - Pittsburgh PA
International Classification:
C10M14910
C10M17302
Abstract:
A method is disclosed for protecting a substrate surface from particulate contaminants in a process using a working tool in conjunction with a working fluid, by employing as the working fluid a solution of a soluble polymer such as polyvinylpyrrolidone.