Novel polyesters comprise repeating units from:
(a) a diacid derived component comprising an alkali metal or ammonium-sulfoarylene, -sulfoaryloxyarylene, -sulfocycloalkylene, -iminodi-sulfonylarylene, -iminobis-(sulfonylarylene) or -sulfoarylkylarylene; and
(b) a diol or diacid derived component comprising bis (N-alkyl-N-alkyleneaminoaryl)-arylalkane; bis (N-alkyl-N-alkyleneaminoaryl)-diarylalkane; bis (N-alkyl-N-alkylene- aminoaryl)-isoalkane; bis (N-alkyl-N-alkylenenaminoaryl)-cycloalkane; dialkyleneaminotetraarylalkane; or bis (alky- lenearyl)arylamine.
The polyesters are useful to prepare electrically photosensitive composite particles and electrically photosensitive materials containing an electrically insulating binder and the composite particles. The particles or materials can be used in a photoelectrophoretic migration imaging process which consists in placing them between two electrodes and submitting them to activating radiation and an electrical field for obtaining an image.
新型聚酯由以下重复单元组成:
(a) 由二元酸衍生的组分,包括碱
金属或
铵-苯磺酰基、-苯磺酰氧基芳基、-
磺酸环亚烷基、-亚
氨基二磺酰基芳基、-亚
氨基双-(磺酰基芳基)或-苯磺酰基芳基;和
(b) 二元醇或二元酸衍生组分,包括双(N-烷基-N-亚烷基
氨基芳基)芳基烷;双(N-烷基-N-亚烷基
氨基芳基)二芳基烷;双(N-烷基-N-亚烷基
氨基芳基)异构烷;双(N-烷基-N-亚烷基
氨基芳基)环烷;二亚烷基
氨基四芳基烷;或双(烷基芳基)芳基胺。
这些聚酯可用于制备电致发光复合微粒和含有电绝缘粘合剂及复合微粒的电致
发光材料。这些微粒或材料可用于光电迁移成像工艺,该工艺包括将它们置于两个电极之间,并使它们受到激活辐射和电场的作用以获得图像。