Patent ID: 8269041

Claim:
A thiouronium salt of formula (1) in which X denotes S, R and R 0 each, independently of one another, have the meaning of straight-chain or branched alkyl having 1-20 C atoms, where one or more R or R 0 may be partially or fully substituted by halogen or partially substituted by CN or NO 2 , but where halogenation in the α-position in R 0 is excluded, and where up to four substituents R may also be connected in pairs in such a way that mono, bi- or polycyclic cations are formed, halogen denotes F, Cl, Br or I, and A − is selected from the group consisting of: [P(C 2 F 5 ) 3 F 3 ] − , [P(C 3 F 7 ) 3 F 3 ] − , [P(C 4 F 9 ) 3 F 3 ] − , [P(C 2 F 5 ) 2 F 4 ] − and [B(CN) 4 ] − .