Malonic acid dyes and polycondensation products thereof

Details Malonic acid dyes and polycondensation products thereof Malonic acid dyes and polycondensation products thereof

1990-10-12

1992-11-10

Stoll, Robert L.

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

552208, 552220, 552266, 534654, 534655, 534658, 534659, 534666, 534670, 534688, 2522991, C07D20956, C09B 5612, C07B 2900

Patent

active

051625458

ABSTRACT:
Malonic acid dyes capable of forming polycondensation products have the formula ##STR1## where R.sup.1 and R.sup.2 are each independently of the other hydroxyl, C.sub.1 -C.sub.6 -alkoxy, chlorine or bromine,

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patent: 4702945 (1987-10-01), Etzbach et al.
patent: 4721779 (1988-01-01), Etzbach
patent: 4724259 (1988-02-01), Etzbach et al.
patent: 4943617 (1990-07-01), Etzbach et al.
"Photochromic Lc polymers main chain and side chain polymers containing azobenzene mesogens" Liq. Crystal vol. 4, No. 5 pp. 513-527 (1989).
Makromol. Chem., Rapid Commun., Band 6, Nr. 4 1985, Seiten 291-299 Basel, CH; B. Reck et al;: "Combined liquid crystalline polymers: Mesogens in the main chain and as side groups".

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