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:
Oct. 12, 2004
Filed:
Jan. 25, 2002
Sydney Luk, Lafayette Hill, PA (US);
George Poszmik, Mt. Laurel, NJ (US);
Hoeganaes Corporation, Cinnaminson, NJ (US);
Abstract
The present invention relates to improved metallurgical powder compositions that incorporate solid lubricants, methods for preparing and using the same, and methods of making compacted parts. Ejection properties, such as stripping pressure and sliding pressure, of compacted parts can be improved by using the solid lubricants. The solid lubricants contain functionalized polyalkylene lubricants have the formula: R —Q—R where Q is a linear or branched, polyalkylene containing from about 10 to about 200 carbon atoms, and R and R are each independently a hydroxyl group, a carboxylic acid group or a metal salt thereof, an amine group, a mono- or di-C to C alkyl substituted amine group, or an alkylene oxide group having the formula: —[(CH ) O] H where q is from about 1 to about 7, n is from about 1 to about 100.