Resol beads, methods of making them, and methods of using them

Details Resol beads, methods of making them, and methods of using them Resol beads, methods of making them, and methods of using them

C - Chemistry, Metallurgy

08

G

C08G 8/10 (2006.01)

Patent

CA 2640526

Resol beads are disclosed, having a relatively narrow size distribution, prepared in high yield by reaction of a phenol with an aldehyde, with a base as catalyst, in the presence of previously-formed resol beads, a colloidal stabilizer, and optionally a surfactant. The resol beads may be thermally treated to prevent sticking and clumping and have a variety of uses, such as in the formation of activated carbon beads.

L'invention concerne des billes de résol, ayant une distribution de taille relativement étroite, préparées avec un rendement élevé par réaction d'un phénol avec un aldéhyde, avec une base en tant que catalyseur, en présence de billes de résol déjà formées, d'un stabilisant colloïdal et éventuellement d'un tensioactif. Les billes de résol peuvent être traitées thermiquement pour empêcher l'adhésion et l'agglutination, et ont une grande variété d'utilisations, par exemple pour la formation de billes de charbon actif.

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