초록 ▼

Olefinically unsaturated hydrocarbons, in particular dimeric or polymeric isobutene derivatives, which have a mean number average molecular weight Mn of from 100 to 3000, are reacted with maleic anhydride in a molar ratio of maleic anhydride to olefin of from 0.2 to 3.0, in the presence of from 1 to

Olefinically unsaturated hydrocarbons, in particular dimeric or polymeric isobutene derivatives, which have a mean number average molecular weight Mn of from 100 to 3000, are reacted with maleic anhydride in a molar ratio of maleic anhydride to olefin of from 0.2 to 3.0, in the presence of from 1 to 5000 ppm by weight of an alkoxide of titanium, of zirconium, of vanadium or of aluminum, at from 150°to 280°C., with formation of the corresponding succinic anhydride. These products are used for the preparation of anticorrosive agents or oil additives.

대표청구항 ▼

A process for the reaction of an olefinically unsaturated hydrocarbon, which has a mean number average molecular weight Mn of from 100 to 3000, with maleic anhydride in a molar ratio of maleic anhydride to olefin of from 0.2 to 3.0, in the presence of from 1 to 5000 ppm by weight, based on the olefi

A process for the reaction of an olefinically unsaturated hydrocarbon, which has a mean number average molecular weight Mn of from 100 to 3000, with maleic anhydride in a molar ratio of maleic anhydride to olefin of from 0.2 to 3.0, in the presence of from 1 to 5000 ppm by weight, based on the olefin, of an additive which prevents side reactions, at from 150°to 280°C., with formation of the corresponding succinic anhydride wherein the additive used is an alkoxide of titanium, of zirconium, of vanadium or of aluminum.