Process for preparation of phenol-modified rosin ester,...

C - Chemistry – Metallurgy – 08 – G

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C08G 8/34 (2006.01) C09D 11/10 (2006.01)

Patent

CA 2334540

This invention provides a process for preparing a phenol-modified rosin ester, the process comprising the step of reacting rosin with phenol, formaldehyde and polyhydric alcohol, the process being characterized in that rosin or a polyhydric alcohol ester of rosin is reacted with a resol phenol resin prepared in the presence of a volatile base catalyst, the invention further provides a phenol-modified rosin ester prepared by the above-mentioned process, and the invention also provides a binder for printing inks which contains the phenol-modified rosin ester and further provides a printing ink containing the binder for printing inks.

L'invention se rapporte à un procédé de production d'un ester de colophane modifié par un phénol, qui consiste à faire réagir un colophane avec un phénol, un formaldéhyde et un polyol. Ce procédé se caractérise en ce que l'on fait réagir un colophane ou un ester de colophane associé à un polyol avec un résol obtenu en présence d'un catalyseur basique volatil. L'invention se rapporte également à un ester de colophane modifié par un phénol et obtenu conformément au procédé précédent, à un liant permettant l'impression avec des encres comportant ledit ester de colophane modifié par un phénol et à une encre pour impression contenant ledit liant.

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