METHOD OF PRODUCING POLYALKENYL ACYLATING AGENTS Russian patent published in 2011 - IPC C08F8/10 C08F8/22 C08F8/46 C08F10/10 

FIELD: chemistry.

SUBSTANCE: invention relates to a method of producing polyalkenyl acylating agents. The method involves reaction of reactive polyalkene whose number-average molecular weight Mn ranges from 500 to 5000, containing terminal vinylidene groups in an amount greater than or equal to 30%, with enofil at temperature higher than 180°C. The reaction takes place while heating for a period of time which is sufficient for converting over 15% of terminal vinylidene groups. The reaction must complete while heating in the presence of a reaction accelerator. The reaction accelerator is a Lewis acid selected from a tin, zinc, aluminium or titanium halide of formula MX_y, where M denotes a metal, X denotes a halogen, for example chlorine, bromine or iodine, and y ranges from 2 to 4. Enofil is selected from a group comprising fumaric acid, itaconic acid, maleic acid, acrylic acid, methacrylic acid, crotonic acid, cinnamic acid and corresponding anhydrides or corresponding C₁-C₄-alkyl ethers.

EFFECT: short reaction time, relatively high output of the product and high degree of functionalisation.

13 cl, 7 tbl, 3 ex