C - Chemistry – Metallurgy – 07 – D
Patent
C - Chemistry, Metallurgy
07
D
C07D 307/60 (2006.01)
Patent
CA 2722977
The present invention pertains to a process for the preparation of an alkenyl- substituted cyclic anhydride compound comprising the steps of subjecting one or more olefinically unsaturated C6 - C28 hydrocarbons of which at least 30% by weight is alpha-olefin to a double bond isomerization step by contacting them with a catalyst comprising an alkali metal on a carrier, and reacting the resulting isomehzed olefinic C6 - C28 hydrocarbons with a cyclic anhydride of an unsaturated dicarboxylic acid to form the alkenyl-substituted cyclic anhydride compound. Furthermore, it pertains to the thus obtained alkenyl-substituted cyclic anhydride and to its use as a paper additive.
L'invention porte sur un procédé de préparation d'un composé anhydride cyclique substitué par alcényle, lequel procédé consiste à soumettre un ou plusieurs hydrocarbures C6 - C28 oléfiniquement insaturés, dont au moins 30% en poids sont des alpha-oléfines, à une étape d'isomérisation de double liaison en les mettant en contact avec un catalyseur comprenant un métal alcalin sur un support, et en faisant réagir les hydrocarbures C6 - C28 oléfiniques isomérisés obtenus avec un anhydride cyclique d'un acide dicarboxylique insaturé afin de former le composé anhydride cyclique substitué par alcényle. L'invention concerne en outre l'anhydride cyclique substitué par alcényle obtenu et son utilisation comme additif pour papier.
de Jong Aaldert Johannes
Struck Oliver
Werner Martin
Akzo Nobel N.v.
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
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