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1. (WO2018037015) FRICTION MATERIAL COMPRISING ARAMID

Pub. No.:    WO/2018/037015    International Application No.:    PCT/EP2017/071154
Publication Date: Fri Mar 02 00:59:59 CET 2018 International Filing Date: Wed Aug 23 01:59:59 CEST 2017
IPC: D21H 13/26
Applicants: TEIJIN ARAMID B.V.
Inventors: NIJHUIS, Walter
DIEDERING, Frank
TIECKEN, Jan-Cees
Title: FRICTION MATERIAL COMPRISING ARAMID
Abstract:
The invention pertains to a friction paper comprising filler, para-aramid pulp, and resin, characterised in that the para-aramid pulp comprises 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.