| abstract |
Use of open-chain acetals or ketals of the general formula <IMAGE> in which n, m are the same or different, numbers from 0-12, x 1 or 2 R 1, R 2 are the same or different, hydrogen, C1-C5-alkyl or alkylene, if appropriate or substituted several times by halogen and / or C1-C4-alkyl; C1-C6-alkene (dien) yl or alkene (dien) ylene, optionally substituted one or more times by halogen and / or C1-C4-alkyl; C5-C7-cyclo- or bicycloalkenyl- or alkylene, optionally substituted one or more times by halogen and / or C1-C4-alkyl; C6-C10-aryl or arylene, optionally substituted one or more times by halogen and / or C1-C4-alkyl and / or C1-C8-alkylaryl or alkylarylene, optionally substituted one or more times by halogen and / or C1-C4-alkyl and / or alkoxy C5-C6 heteroaryl with one or more O, S, N as heteroatoms R³, R <4> = R¹, R² = identical or different, at least one of the radicals R¹, R², R³ or R <4> one represents cyclic or bicyclic unsaturated C5-C7 radical, as a non-discoloring antiozonant for natural and / or synthetic rubber. |