Patent ID: 7491784

Claim:
A process for the preparation of phosphonic ester-modified organosiloxanes of the formula (R 2 SiO 2/2 ) p (R 3 SiO 1/2 ) q [O 1/2 H] t [(O f/2 R 1 3-f SiCR 2 2 P(O)(OR) 4 ) 2 ] 2 (I), in which R is a hydrogen atom or a monovalent, optionally —CN—, —NCO—, NR 5 2 —, —COOH—, —COOR 5 —, -halogen-, -acryloyl-, -epoxy-, —SH—, —OH— or —CONR 5 2 — substituted Si—C-bonded C 1 -C 20 hydrocarbon radical or C 1 -C 15 hydrocarbonoxy radical in which one or more nonadjacent methylene units may be replaced by groups —O—, —CO—, —COO—, —OCO—, —OCOO—, —S—, or —NR 5 — and in which one or more nonadjacent methine units may be replaced by groups —N═, —N═— or —P═, R 1 is a hydrogen atom or a monovalent, optionally —CN—, —NCO—, —COOH—, —COOR 5 —, -halogen-, -acryloyl-, —SH—, —OH— or —CONR 5 2 — substituted Si—C-bonded C 1 -C 20 hydrocarbon radical or C 1 -C 15 hydrocarbonoxy radical in which one or more nonadjacent methylene units may be replaced by groups —O—, —CO—, —COO—, —OCO—,—OCOO—, —S—, or —NR 5 — and in which one or more nonadjacent methine units may be replaced by group, —N═, —N═— or —P═, R 2 is hydrogen or an optionally —CN— or halogen-substituted C 1 -C 20 hydrocarbon radical, R 4 is hydrogen or an optionally —CN— or halogen-substituted C 1 -C 20 hydrocarbon radical or a substituted or unsubstituted polyalkylene oxide having 1 to 4000 carbon atoms, R 5 is hydrogen or an optionally —CN— or halogen-substituted C 1 -C 10 hydrocarbon radical, p is 0 or an integer from 1 to 100,000, q is 0 or an integer from 1 to 100,000, f is 1, 2 or 3, s is an integer which is at least 1 and t is 0 or an integer which is at least 1, p+q is an integer which is at least 1, comprising reacting: at least one silane of the formula [(R 3 O) f R 1 3−f SiCR 2 2 P(O)(OR 4 ) 2 ] [III] with at least one silicon compound of the general formula (R 2 SiO 2/2 ) p (R 3 SiO 1/2 ) q [O 1/2 H] m [IV] where R 3 is hydrogen or an optionally —CN— or halogen-atom-substituted C 1 -C 20 hydrocarbon radical, and m is an integer 1 or 2, the reaction taking place neat or in organic solvent.