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:
Nov. 24, 2015
Filed:
Nov. 30, 2004
Anton Johannes Josef Hendriks, Lent, NL;
Dennis Wilbers, Arnhem, NL;
Harrie Grotendorst, Duiven, NL;
René Journee, Duiven, NL;
Mirjam Ellen Oldenzeel, Westervoort, NL;
Anton Johannes Josef Hendriks, Lent, NL;
Dennis Wilbers, Arnhem, NL;
Harrie Grotendorst, Duiven, NL;
René Journee, Duiven, NL;
Mirjam Ellen Oldenzeel, Westervoort, NL;
TEIJIN ARAMID B.V., Arnhem, NL;
Abstract
A para-aramid fibrid film is disclosed that has at least 95% of the bonds of the polymer are para-oriented. A method for making said para-aramid fibrid film by (a) polymerizing a para-oriented aromatic diamine and a para-oriented aromatic dicarboxylic acid halide to an aramid polymer having only para-oriented bonds in a mixture of solvents consisting of N-methylpyrrolidone or dimethylacetamide and calcium chloride or lithium chloride to obtain a dope wherein the polymer is dissolved in the mixture of solvents and the polymer concentration is 2 to 6 wt. %, and (b) converting the dope to para-aramid fibrid film is also described.