Antistatic coating containing graphite for backings of...

B - Operations – Transporting – 24 – D

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B24D 3/34 (2006.01) B24D 3/00 (2006.01) B24D 11/02 (2006.01)

Patent

CA 2435853

A composition useful, for example, as a coating on the backside of coated abrasive articles comprising binder precursor selected from the group consisting of acrylic, acrylate, phenolic, epoxy, melamine-formaldehyde and combinations thereof; and at least 37% by weight graphite particles, based on the total solids content of the composition. The composition can also comprise binder; at least about 25% by weight graphite particles, based on the total solids content of the composition; and second particles having median diameter no greater than about 200 micrometers, wherein said second particles are selected from the group consisting of calcium carbonate, carbon black and mixtures thereof.

L'invention concerne une composition servant, par exemple, de revêtement sur l'envers d'articles abrasifs enduits. Cette composition comprend un précurseur de liant sélectionné dans le groupe constitué par du formaldéhyde acrylique, acrylate, phénolique, époxy, mélamine et ses combinaisons, ainsi qu'au moins 37 % en poids de particules de graphite, sur la base de la teneur totale en solides de la composition. Ladite composition peut également contenir un liant, au moins environ 25 % en poids de particules de graphite, sur la base de la teneur totale en solides de la composition, et d'autres particules dont le diamètre moyen ne dépasse pas environ 200 micromètres, ces autres particules étant sélectionnées dans le groupe comprenant le carbonate de calcium, le noir de carbone et des mélanges de ces éléments.

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