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. 27, 1993
Filed:
Dec. 09, 1991
Thomas P Izod, Basking Ridge, NJ (US);
Scott M Hacker, New York, NY (US);
Anjana Bose, Randolph, NJ (US);
Allied-Signal Inc., Morris Township, Morris County, NJ (US);
Abstract
This invention relates to a process of extracting a first spinning solvent such as mineral oil from a solution spun polymer fiber such as polyethylene through use of an extraction solvent such as dimethyl diethylene glycol and diethyl diethylene glycol in which the spinning solvent is soluble, which extracting solvent is soluble in a third extraction solvent such as water to a greater extent than the extraction solvent is soluble in the spinning solvent, such that the second extracting solvent can be extracted from a solution of said spinning solvent and said second extraction solvent by said third extracting solvent.