| abstract |
The invention relates to compounds of the formula [RSiO3/2]z (I) in which z is 6, 8 or 10; R represents the same or different radicals of the formulas -CH2CH2-X (II), -CH(CH3)-X (III) or -O-Si(R'2)-Y (IV) with the proviso that up to z-1 of the radicals can also be radicals of the formula -O-SiR'3, in which X represents a monovalent radical or one half of a divalent radical of the formulas (R'2SiO)nR', (V) [(R'2SiO)n]1/2, (VI) SR'', (VII) [SR'''S]1/2 or (XV) CH2Z, (VIII) R' represents the same or different C1- to C6-alkyl, C1- to C6-alkoxy or phenyl radicals; R'' represents the same or different C1- to C18-alkyl radicals, which can be substituted by radicals of formulas (V) or (VI); R''' represents the same or different divalent C1- to C18-hydrocarbon radicals, preferably alkylene and/or phenylene radicals and/or radicals of the formula -(R'2SiO)n-; Z represents a halogen atom or an N-bonded amino radical, that is an NH2 radical, an N-piperidinyl, n-piperazinyl or N-morpholinyl radical or a C1- to C6-N-monoalkylamino or a C1- to C6-dialkylamino radical; Y represents a hydrogen atom, an optionally halogenated C2- to C10-hydrocarbon radical or a radical of the formulas (II) or (III); and n represents an integer having avalue of at least 1. |