| 摘要 |
<p>NEW MATERIAL:An epoxy compound expressed by formula I (k is 1-30; R<1> is formulas II, III, IV, etc.; Y is -COO- or -OCO-; R2 is -COOR<3>, -OCOR<3>, -OR<3>, -COR<3> or -R<3>; R<3> is formula V; R<4> and R<5> are -CH3, -CN or halogen; n and p are 0-10; p is not 0 and a is 0 or 1 when R<5> is -CH3) C* indicates asymmetric carbon atom). EXAMPLE:2-Methylbutyl 4'-(9,10-epoxydecyloxy)biphenyl-4-carboxylate. USE:Useful as a synthetic raw material for liquid crystal polymers, exhibiting ferroelectricity at about ambient temperature, having a high speed of response to external factors, capable of displaying moving images, utilizable as display elements for large-sized and bent screens and useful as various electrooptical devices in the field of optoelectronics. PREPARATION:For example, reaction is carried out as shown in the reaction formulas to afford the aimed compound expressed by formula l.</p> |
