| 摘要 |
<p>Multifunctionalised polyorganosiloxanes including, per molecule, α at least one functional siloxyl unit (I) (R)aYSi(O)¿(3 - a)/2?, wherein R is particularly a C1-6 alkyl radical, Y is a C1-15 alkoxyl radical and a is 0, 1 or 2; β at least one other functional siloxyl unit (II) (R)bWSi(O)¿(3 - b)/2?, wherein W is hydrogen or a group connected to the silicon via a Si-C bond and selected from an alkyl, aralkyl or halogenated or polyhalogenated aryl group; a polyether oxide group; en epoxidised alkyl group; an alkoxyalkyl group; a hydroxylated, carbonylated or esterified alkyl group; a phenol group; and an alkoxysilyl group; and η optionally at least one unit (III) (R)c(H)dSi(O)¿((4 - (c + d))/2?, wherein c is 0, 1, 2 or 3, d is 0 or 1 and c + d « 3. The alkoxyl functionality Y is inserted onto a suitable polyhydrogenoorganosiloxane by means of a dehydrogenation/condensation reaction from the alcohol from which Y is derived. Then the non-hydrogeno functionality W is inserted by means of a hydrosilylation reaction from the olefin compound from which W is derived. Said multifunctionalised polyorganosiloxanes may be used as anti-adherence modulators in silicone compositions.</p> |
