| abstract |
THESE POLYSILOXANES ARE MODIFIED TO PRESENT SIDE CHAINS CONTAINING CARBONATE OR THIO-CARBONATE BONDS; THEY ARE REPRESENTED BY FORMULA I BELOW IN WHICH THE VARIOUS REPETITIVE GROUNDS ARE DISTRIBUTED AT RISK. THEY ARE PREPARED BY CHEMICAL MODIFICATION OF A COMPOUND II BY HYDROLYSILYLATION OF A COMPOUND III, AND POSSIBLY GRAFTING OF THE R CHAIN. USE AS LIQUID CRYSTALS OR MEDICINAL CARRIERS FOLLOWING THE DEFINITIONS OF Z AND R (CF DRAWING IN BOPI) Z REMAINS OF THE MOLECULE TO BE ASSOCIATED WITH THE POLYSILOXANE CHAIN; A -O- OR -S-; E SPACING CHAIN; R LOWER ALKYL OR PHENYL; R, R, R H, LOWER ALKYL, PHENYL, R AND R NOT SIMULTANEOUSLY DESIGNING H, R GROUP CONFERING AN ADDITIONAL PROPERTY; ABC30; A0; B AND C CAN BE VOID; R, R AND R LOWER ALKYL OR PHENYL; DE30; E CAN BE ZERO, R REMAINS HYDROCARBON CONTAINING TERMINAL ETHYLENIC INSATURATION. |