Pitch emulsions

C - Chemistry – Metallurgy – 09 – K

Patent

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Details

C09K 3/22 (2006.01)

Patent

CA 2732315

An emulsion of pitch in water preferably characterized by having a lower level of tack on drying by virtue of using as the emulsifying agent a fatty acid, a chemically modified fatty acid, a rosin acid, a chemically modified rosin acid, or combinations thereof, especially a tall oil fatty acid, or a chemically modified tall oil fatty acid, where the pitch emulsion is useful for reducing the development of fugitive dust in a dust-forming material.

Cette invention concerne une émulsion de poix dans l'eau caractérisée, de préférence, en ce qu'elle présente un degré plus bas de pouvoir collant grâce à l'utilisation, à titre d'agent émulsifiant, d'un acide gras, d'un acide gras chimiquement modifié, d'un acide de colophane, d'un acide de colophane chimiquement modifié, ou d'une combinaison de ceux-ci, notamment, d'un acide gras de tallol, ou d'un acide gras de tallol chimiquement modifié. L'émulsion de poix selon l'invention est utile pour réduire le développement d'une émission fugitive de poussière dans un matériau formant poussière.

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