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:
May. 19, 2009
Filed:
Mar. 18, 2005
Applicants:
Hanneke Boerstoel, Arnhem, NL;
Hendrik Swierenga, Oosterhout, NL;
Aart Klinkhamer, Elst, NL;
Inventors:
Assignee:
Teijin Aramid B.V., Arnhem, NL;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B32B 27/04 (2006.01);
U.S. Cl.
CPC ...
Abstract
The invention pertains to a composite material comprising PPTA (poly-p-phenyleneterephthalamide) and nanotubes having an aspect ratio of at least 100 and a cross-sectional diameter of 5 nm or less, the composite material containing up to 12 wt. % of nanotubes, obtainable by adding the nanotubes to sulfuric acid, decreasing the temperature to solidify the mixture, adding PPTA to the solid mixture, heating to above the solidifying point and mixing the mixture, and spinning, casting, or molding the mixture to the composite material. The process comprises the steps: