| 摘要 |
Vulcanizable composition comprises (i) at least one epoxy group-containing and optionally completely or partially hydrogenated nitrile rubber, which contains repeating units derived from e.g. at least one conjugated diene, (ii) at least one Lewis- and/or Bronsted acid as a crosslinking agent, (iii) at least one crosslinking accelerator comprising thiuram, xanthates, thioureas, dithiocarbamates or 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 component (iii). Vulcanizable composition comprises (i) at least one epoxy group-containing and optionally completely or partially hydrogenated nitrile rubber, which contains repeating units derived from at least one conjugated diene, at least one alpha , beta -unsaturated nitrile, and optionally at least one further copolymerizable monomers, and does not contain non-conjugated cyclic polyene, (ii) at least one Lewis- and/or Bronsted acid as a crosslinking agent, (iii) at least one crosslinking accelerator comprising thiuram, xanthates, thioureas, dithiocarbamates or carbamates, (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). |
