| 发明名称 |
Liquid crystalline polyesters. |
| 摘要 |
<p>Liquid crystalline side-chain polyesters prepared by polycondensing a dicarboxylic acid or a derivative thereof with a diol of the formula according to claim 1. Of such diols the essence is that they have a delocalized pi electron system to which both an electron donor group and an electron acceptor group are coupled directly (D pi A-system). Because of the structure of the diol to which the D pi A-system is linked the polyesters exhibit excellent Tg and Tc values. The polyesters are to be used in optical waveguides or for optical data storage.</p> |
| 申请公布号 |
EP0350113(A1) |
申请公布日期 |
1990.01.10 |
| 申请号 |
EP19890201737 |
申请日期 |
1989.06.30 |
| 申请人 |
AKZO N.V. |
发明人 |
WREESMANN, CAREL THEODOOR JOZEF;ERDHUISEN, ERWIN WILHELMUS PETRUS |
| 分类号 |
C07C41/00;G02F1/13;C07C43/13;C07C43/23;C07C45/00;C07C49/84;C07C65/19;C07C67/00;C07C201/00;C07C205/37;C07C209/00;C07C211/52;C07C215/16;C07C223/06;C07C235/42;C07C237/30;C07C241/00;C07C251/16;C07C255/37;C07C255/54;C08G18/32;C08G18/38;C08G18/67;C08G63/52;C08G63/66;C08G63/672;C08G63/68;C08G63/682;C08G63/685;C09B69/10;G02F1/355;C09K19/38;G02F1/35;G02F1/361;G11B7/245;G11B7/25 |
主分类号 |
C07C41/00 |
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