Patent ID: 8686033

Claim:
A phosphoric ester consisting of A) at least one structural unit derived from substances of component a), the substances of component a) being selected from orthophosphoric acid and at least one compound selected from the group consisting of polyphosphoric acid, tetraphosphorus decaoxide, phosphoryl chloride and phosphorus pentachloride, B) at least one structural unit derived from substances of component b), the substances of component b) being selected from at least one compound of formula (I) R 2 â€”Oâ€”(CH 2 CH 2 O) u (C 3 H 6 O) v (DO) w â€”H â€ƒâ€ƒ(I) where R 2 is a linear or branched, saturated alkyl group having 6 to 30, or is a linear or branched mono- or polyunsaturated alkenyl group having 6 to 30, D is a linear or branched saturated alkylene group having 4 to 20 carbon atoms, is a linear or branched mono- or polyunsaturated alkenylene group having 4 to 20 carbon atoms or is CH(aryl)CH 2 â€”, u is a number from 0 to 200, v is a number from 0 to 100, w is a number from 0 to 100, and where the groups CH 2 CH 2 O, C 3 H 6 O and DO from the compounds of formula (I) can be arranged blocklike or randomly distributed, and C) at least one structural unit derived from substances of component c), the substances of component c) being selected from at least one diol of formula (II) HOâ€”(CH 2 CH 2 O) a (C 3 H 6 O) b (DO) c â€”H â€ƒâ€ƒ(II) where D is as defined in formula (I), a is a number from 0 to 800, b is a number from 0 to 100, c is a number from 0 to 100, where the sum total a+b+c is â‰§1, and the groups CH 2 CH 2 O, C 3 H 6 O and DO from the compounds of formula (II) can be arranged blocklike or randomly distributed, and the phosphoric ester contains 2 or more phosphorus atoms per molecule which are bridged via a structural unit derived from the compounds of formula (II).