Claims
- 1. A friction paper comprising 5 to 95 percent, by weight, aramid fibers, and 10 to 80 percent, by weight, inorganic filler wherein the aramid fibers have a length of 0.15 to 10 millimeters, a surface area of 0.5 to 20 square meters per gram, and a coating of chitosan in the amount of 1 to 10 percent, based on the weight of the fiber.
- 2. The friction paper of claim 1 wherein the friction coefficient of the paper is at least 5 percent greater than the friction coefficient of a similar paper without chitosan.
Parent Case Info
This is a division of application Ser. No. 08/781,331 filed Jan. 10, 1997, now U.S. Pat. No. 5,827,610.
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Number |
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Date |
Kind |
5366781 |
Colburn et al. |
Nov 1994 |
|
5827610 |
Ramachancran |
Oct 1998 |
|
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G. G. Allan et al, Chitosan-Coated Fibers, Elsevier Applied Science, pp. 765-776, 1989. |
G. G. Allan et al., Marine Polymers, V. Modification of Paper, Cellulose Technology Research, pp. 172-180, 1989. |
Divisions (1)
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Number |
Date |
Country |
Parent |
781331 |
Jan 1997 |
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