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:
Jun. 28, 1983
Filed:
Jun. 08, 1981
Applicant:
Inventors:
Ellen S Schwartz, Warren, MI (US);
Cline A Tichner, Grosse Ile, MI (US);
Assignee:
BASF Wyandotte Corporation, Wyandotte, MI (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C10M / ; C10M / ; C10M / ;
U.S. Cl.
CPC ...
252 76 ; 252 77 ; 252 781 ; 252 785 ; 252 79 ; 548347 ; 548355 ; 568679 ; 568680 ;
Abstract
In accordance with the instant invention, a water-based hydraulic fluid, having improved viscosity can be obtained by blending a carboxylic acid with a thickened hydraulic fluid composition employing a thickener obtained by modifying a conventional polyether polyol thickening agent with an alpha-olefin epoxide or glycidyl ether having about 10 to 24 carbon atoms or mixtures thereof. Small amounts of higher molecular weight glycols may also be incorporated into the chain.