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. 23, 2018
Filed:
Dec. 21, 2011
Jörg Deiters, Norderstedt, DE;
Klaus Heinrich Ihmels, Hamburg, DE;
Jörg Deiters, Norderstedt, DE;
Klaus Heinrich Ihmels, Hamburg, DE;
Daramic, Inc., North Charleston, SC (US);
Abstract
The invention relates to a thermoplastic polymer-based battery separator, which contains a compound of formula R (OR)(COOM). In said formula, R represents a non-aromatic hydrocarbon group comprising between 10 and 4,200 carbon atoms, which can be interrupted by oxygen atoms, Rrepresents H, —(CH)COOMor —(CH)—SOM, whereby k stands for 1 or 2, M represents an alkali or earth alkaline metal ion, Hor NH, whereby not all variables of M are defined simultaneously as H, n stands for 0 or 1, m stands for 0 or a whole number from 10 to 1,400 and x stands for 1 or 2. The ratio of oxygen atoms to carbon atoms in the compound according to the aforementioned formula ranges between 1:1.5 and 1:30 and n and m cannot simultaneously represent zero.