Meta- and para-aramid pulp and processes of making same

Details Meta- and para-aramid pulp and processes of making same Meta- and para-aramid pulp and processes of making same

D - Textiles, Paper

21

H

D21H 13/26 (2006.01)

Patent

CA 2567999

The present invention relates to meta- and para-aramid pulp for use as reinforcement material in products such as seals and friction materials. The pulp comprises (a) fibril free meta-aramid particles, (b) irregularly shaped, para-aramid fibrous structures, and (c) water, whereby the para-aramid fibrous structures contact and are wrapped partially around at least some of the meta- aramid particles. The invention further relates to processes for making such aramid pulp.

La présente invention traite de la pâte méta et para-aramide pour l'utilisation comme matériau de renforcement dans des produits tels que des joints d'étanchéité et des matériaux de friction. La pâte comprend (a) des particules méta-aramides exemptes de fibres, (b) de forme irrégulière, des structures fibreuses para-aramides et (c) de l'eau, ce qui fait que les structures fibreuses para-aramides sont en contact et sont partiellement enrobées autour d'au moins quelques-unes des particules méta-aramides. De plus, cette invention traite des processus de fabrication de cette pâte aramide.

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