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:
Mar. 12, 2019
Filed:
Jan. 02, 2015
Cummins Filtration Ip, Inc., Columbus, IN (US);
Regents of the University of Minnesota, Minneapolis, MN (US);
Zaifei Wang, Minneapolis, MN (US);
Frank S. Bates, Minneapolis, MN (US);
Christopher W. Macosko, Minneapolis, MN (US);
Kan Wang, Cookeville, TN (US);
William C. Haberkamp, Cookeville, TN (US);
Christopher E. Holm, Stoughton, WI (US);
Cummins Filtration IP, Inc., Columbus, IN (US);
Regents of the University of Minnesota, Minneapolis, MN (US);
Abstract
Described herein is a continuous process for modifying the properties of polyester and polyester based fibers, such as a poly(butylene terephthalate) (PBT) fiber, comprising subjecting the PBT fiber to alkaline hydrolysis, and optionally further comprising functionalizing the PBT fiber by solution grafting such as fluorination. The alkaline hydrolysis and optionally subsequent functionalization such as fluorination process can be continuous, following the melt blowing/spinning or spun-bonding process. Also described is a nonwoven PBT fiber mat obtained by the surface modification process. Further described is a filtration device comprising the nonwoven PBT fiber mat.