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. 15, 2003
Filed:
Jul. 18, 2001
Rolf Skold, Stenungsund, SE;
AB Chem Dimension, Stenungsund, SE;
Abstract
The present invention relates to an aqueous metalworking liquid, which has the form of a clear solution at 20 ° C., is precipitated at a temperature higher than 20 ° C. and contains: (a) a polypropylene glycol compound containing 6-100 propyleneoxy groups and lacking the presence of hydrocarbons groups having more than 12 carbon atoms, and (b) at least one water-soluble anionic compound, selected from the group consisting of a phosphate ester or an ether carboxylate, the anionic compound containing 1-40 oxyalkylene groups having 2-4 carbon atoms and lacking presence of hydrocarbon groups with more than 12 carbon atoms. The metalworking liquid has excellent lubricating properties and can easily be worked up and reused without leaving troublesome coatings on the metal surfaces.