| abstract |
Surface-modified, doped, pyrogenically produced oxides surface-modified with one or several compounds from the following groups: n a) Organosilanes of the type (RO) 3 Si(C n H 2n+1 ), (RO) 3 Si(C n H 2n−1 ) n b) R′ x (RO) y Si(C n H 2n+1 ), (RO) 3 Si(C n H 2n+1 ) n c) X 3 Si(C n H 2n+1 ), X 3 Si(C n H 2n−1 ) n d) X 2 (R′)Si(C n H 2n+1 ), X 2 (R′)Si(C n H 2n−1 ) n e) X(R′) 2 Si(C n H 2n+1 ), X(R′) 2 Si(C n H 2n−1 ) n f) (RO) 3 Si(CH 2 ) m —R′, n g) (R″) x (RO) y Si(CH 2 ) m —R′, n h) X 3 Si(CH 2 ) m —R′, n i) (R)X 2 Si(CH 2 ) m —R′, n j) (R) 2 XSi(CH 2 ) m —R′, n k) Silazanes of the type n n n l) Cyclic polysiloxanes, n m) Polysiloxanes or silicone oils. |