Patent ID: 8263811

Claim:
A mixture comprising at least two different iodinated organic substances each having a molecular mass of less than 2000, corresponding respectively to the general formulae: R-G x CX 2 —CXY—) n —I and R-G x CX 2 —CXY n+1 —I, where; R represents (i) a hydrogen atom, (ii) an atom of an alkali metal, (iii) a linear or branched C 1 -C 20 alkyl group optionally substituted with one or more groups chosen from phenyl, carboxyl, hydroxyl, nitrile, amine or amidine groups, (iv) a C 3 -C 8 cycloalkyl group optionally substituted with one or more groups chosen from C 1 -C 8 alkyl groups and the nitrile group, or (v) a phenyl group, optionally substituted with one or more groups chosen from the C 1 -C 8 alkyl groups and halogen atoms other than the iodine atom; x represents an integer equal to 0 or 1; G represents —O—, —O—C(═O)—O—, —C(═O)—O— or —O—S(═O) p —O—; if G is a group —C(═O)—O—, then its fragment C(═O) is linked to R and its fragment O linked to a group CX 2 ; p represents an integer equal to 1 or 2; n represents an integer equal to 1 to 8; the groups X represent, independently of each other and of Y, (i) a hydrogen atom, (ii) a halogen atom other than an iodine atom, or (iii) a linear or branched C 1 -C 20 alkyl group; Y represents (i) a halogen atom other than an iodine atom, (ii) a phenyl group optionally substituted with one or more atoms chosen from halogen atoms other than the iodine atom and C 1 -C 8 alkyl groups, (iii) a group —O—C(═O)—Z, (iv) a nitrile group, (v) a group —C(═O)—O—Z, or (vi) a group —C(═O)—NZ 2 ; Z represents (i) a hydrogen atom, or (ii) a saturated or ethylenically unsaturated or aromatic C 1 -C 20 hydrocarbon group; R, G, x, CX 2 —CXY and n are identical for the two substances; and I is an iodine atom.