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:
Sep. 15, 2020
Filed:
Aug. 22, 2017
Applicant:
Teijin Aramid B.v., Arnhem, NL;
Inventors:
Assignee:
TEIJIN ARAMID B.V., Arnhem, NL;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16D 69/02 (2006.01); D21H 13/26 (2006.01); D21H 17/68 (2006.01); D21H 17/34 (2006.01); D21H 17/48 (2006.01); D21H 23/04 (2006.01); D21H 21/18 (2006.01); D21H 27/00 (2006.01); F16D 13/52 (2006.01);
U.S. Cl.
CPC ...
F16D 69/026 (2013.01); D21H 13/26 (2013.01); D21H 17/34 (2013.01); D21H 17/48 (2013.01); D21H 17/68 (2013.01); D21H 21/18 (2013.01); D21H 23/04 (2013.01); D21H 27/00 (2013.01); F16D 13/52 (2013.01); F16D 2200/0069 (2013.01); F16D 2200/0095 (2013.01);
Abstract
A friction paper including filler, para-aramid pulp, and resin, characterised in that the para-aramid pulp includes 0.1 to 10 wt. % of polyvinyl pyrrolidone (PVP), the paper having a grammage in the range of 100 to 800 g/m2. It has been found that the use of a PVP-containing para-aramid pulp leads to improved friction performance as compared to the use of para-aramid pulp not containing PVP. Effects obtained include improved friction properties, improved strength properties, and improved filler retention.