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:
Aug. 10, 1982
Filed:
Aug. 21, 1980
Robert D Lundberg, Bridgewater, NJ (US);
Henry S Makowski, Scotch Plains, NJ (US);
Exxon Research & Engineering Co., Florham Park, NJ (US);
Abstract
The present invention relates to an improved process for forming elastomeric fibers for elastic yarn from neutralized sulfonated elastomeric polymers, and novel elastomeric fiber compositions derived therefrom, wherein the neutralized sulfonated elastomeric polymer is dissolved in a mixed solvent consisting of a backbone solvent and a polar cosolvent and spun into fibers. The neutralized sulfonated elastomeric polymer has about 10 to about 50 meq. sulfonate groups per 100 grams of sulfonated elastomeric polymer, of which at least 95% are neutralized with a cation being selected from the group consisting of antimony, iron, lead, aluminum, and Groups I-A, II-A, IB and II-B of the Periodic Table of Elements and mixtures thereof. The solution of the neutralized sulfonated elastomeric polymer having a Brookfield viscosity at room temperature at about 6 rpm of about 1,000 to about 200,000 cps is fabricated into fibers by wet or dry spinning through a spinner having a plurality of orifices therein. The resultant elastomeric fibers exhibit improved dimensional stability, and resistance to solvents and superior holding power, when fabricated into an elastomeric yarn.