VULCANISABLE COMPOUNDS ON THE BASIS OF NITRILE RUBBERS CONTAINING EPOXY GROUPS

Vulcanizable composition comprises (i) at least one epoxy group-containing, optionally completely or partially hydrogenated nitrile rubber containing repeating units derived from e.g. at least one conjugated diene, (ii) at least one Lewis- and/or Bronsted base as a crosslinking agent, (iii) at least one crosslinking accelerator comprising thiuram, xanthates, thioureas, dithiocarbamates, and carbamates, (iv) less than 2.5 pts. wt. further crosslinking agents different from the component (ii), and (v) less than 2.5 pts. wt. further crosslinking accelerator different from the component (iii). Vulcanizable composition comprises (i) at least one epoxy group-containing and optionally completely or partially hydrogenated nitrile rubber containing repeating units derived from e.g. at least one conjugated diene, (ii) at least one Lewis- and/or Bronsted base as a crosslinking agent, (iii) at least one crosslinking accelerator comprising thiuram, xanthates, thioureas, dithiocarbamates, and carbamates, where the component (ii) is different from the component (iii), (iv) less than 2.5 pts. wt. (based on 100 pts. wt. component (i)) further crosslinking agents different from the component (ii), and (v) less than 2.5 pts. wt. (based on 100 pts. wt. component (i)) further crosslinking accelerator different from the component (iii). Independent claims are also included for: (1) preparing the above vulcanizable composition, comprising mixing the component (i) with the component (ii); (2) producing vulcanizates based on the component (i), comprising crosslinking the vulcanizable composition by increasing the temperature to 20-250[deg] C, preferably 50-230[deg] C; and (3) vulcanizates comprising the component (i).