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:
Jul. 05, 1977
Filed:
Nov. 11, 1975
George F Felton, Jr, Chadds Ford, PA (US);
Suntech, Inc., St. Davids, PA (US);
Abstract
A metalworking liquid having utility as a recycleable general purpose cutting and grinding coolant contains a major amount of aqueous solution of a block copolymer of ethylene oxide and propylene oxide and having a molecular weight of about 1800-2900, and an amount of both an alkanolamine cinnamate and a boron amine complex effective to inhibit corrosion. Also the liquid generally contains a germicide, an anti-foaming agent and a pH control agent. At an elevated temperature said liquid undergoes a phase separation in which most of the foregoing materials do not remain in the contaminated water which then can be discarded. The remaining mixture can be diluted with clean water and reused.