Patent ID: 8129552

Claim:
A compound of the general formula (I) A-PO 3 —B (I) in which B is a radical of the general formula (II) in which n is an integer from 2 to 8; m is 0, 1 or 2; x is an integer from 0 to 8; y is an integer from 1 to 4; z is an integer from 1 to 5; R 3 is an alkyl radical having 1 to 3 C atoms, which may be substituted by one or more hydroxyl groups; and in which A is a radical selected from one of the formulae (VIII) or (IX): in which p, q, r, s, t≦0; 12≦p+q≦30 and 8≦s+t+r≦26; where q≠8 for p+q=14, 16, 18 or 20, if A is a radical of the formula (VIII).