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:
Jan. 12, 2016
Filed:
Oct. 26, 2010
Martin Weber, Maikammer, DE;
Volker Warzelhan, Weisenheim am Berg, DE;
Tai-shung Chung, Ann Arbor, MI (US);
Natalia Widjojo, Singapore, SG;
Martin Weber, Maikammer, DE;
Volker Warzelhan, Weisenheim am Berg, DE;
Tai-Shung Chung, Ann Arbor, MI (US);
Natalia Widjojo, Singapore, SG;
BASF SE, , DE;
National University of Singapore, Singapore, SG;
Abstract
The invention relates to a process for the preparation of a hollow filament (F) based on one or several molten or dissolved hyperbranched polymers (P) and potentially one or several further polymers (FP), characterized in that the molten or dissolved hyperbranched polymer (P) or the mixture of the hyperbranched polymer (P) with the further polymer (FP) is passed through one or several spinnerets (S), wherein the ratio between the spinneret die-length (L) and the die-channel (Delta-D) is between 0.1 and 9.5. The process can be applied for the preparation of hyperbranched polyethersulfone (HPES) hollow filaments.