The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 04, 1978
Filed:
Aug. 12, 1976
Thomas D Henley, Broomall, PA (US);
Richard F Reeves, Roslyn, PA (US);
Amchem Products, Inc., Ambler, PA (US);
Abstract
Oil emulsion is removed from the surfaces of articles by washing the articles with an aqueous solution of wash water and demulsifier, thereby forming a turbulent mixture of the wash water, the demulsifier and the oil emulsion. The demulsifier is effective in breaking the oil emulsion. The liberated oil is allowed to form a separate phase in the solution of wash water/demulsifier, and is removed therefrom in a quiescent stage. The aqueous solution of wash water and demulsifier having the oil removed therefrom is recycled to wash oil emulsion from other of said articles. The preferred demulsifiers are ammonium and alkali metal sulfates and bisulfates.