Rolic Ag

Angela Ohlemacher

Klaus Schmitt

Carsten Benecke

Compounds of formula (I) wherein A, C and D represent (1) or (2), B represents (3) or (4) wherein at least one of the substituents is other than hydrogen and also at least one of the phenylene rings may be replaced by a 1,4-phenylene ring in which one or two non-adjacent CH groups have been replaced by nitrogen; k, l, m are 0 or 1, wherein k&plus;l&plus;m must be equal to 1 or 2; Z , Z , Z each independently of the others represents a single bond, &mdash;CH CH &mdash;, &mdash;CH O&mdash;, &mdash;OCH &mdash;, &mdash;COO&mdash;, &mdash;OOC&mdash;, &mdash;CH&boxH;CH&mdash;COO&mdash;, &mdash;OOC&mdash;CH&boxH;CH&mdash;, &mdash;(CH ) &mdash;, &mdash;O(CH ) &mdash;, &mdash;(CH ) O&mdash; or &mdash;C&equiv;C&mdash;; R , R represent crosslinkable groups, and S , S represent spacer units.

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Schopfheim-Wiechs, Germany

Angela Ohlemacher