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:
Sep. 13, 1988
Filed:
Jul. 10, 1987
Applicant:
Inventor:
John G Papalos, Ledgewood, NJ (US);
Assignee:
Diamond Shamrock Chemicals Company, Painesville, OH (US);
Primary Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
428694 ; 427 44 ; 427 541 ; 427128 ; 427131 ; 428695 ; 428900 ; 428704 ; 252 6254 ;
Abstract
Reactive dispersants for magnetic recording media are prepared by sequentially phosphating and esterifying or esterifying and phosphating alkoxylated alcohols having at least two carbon atoms and at least two hydroxyl groups. The phosphating agent can be phosphorus oxychloride while the esterifying agent can be acrylic acid.