Paper comprising aramid pulp and a friction paper made therefrom
AssigneeDupont Safety & Construction, Inc.
InventorMehdi Afshari
Life of this patent
Estimating the term…
Abstract
A paper comprises from 60 to 99 weight percent of a aramid fibrous pulp and from 1 to 40 weight percent of a polyvinylpyrrolidone coating on the fiber surface, the coating being neither chemically nor electrostatically bound to the fibers. A friction paper composite comprising the paper and a resin coating is also described.
Claims15
A paper comprising from 60 to 99 weight percent based on the total weight of the paper of an aramid fibrous pulp, said fibrous pulp comprising fibers, and from 1 to 40 weight percent based on the total weight of the paper of polyvinylpyrrolidone present as a coating on the surface of the fibers, the coating being neither chemically nor electrostatically bound to the fibers.
Dependencies are inferred from the claim text.