首页>
外国专利>
PHOTOACTIVE POLYIMIDES, POLYAMIDE ACIDS OR ESTERS WITH SIDE CHAIN PHOTOCROSSLINKABLE GROUPS
PHOTOACTIVE POLYIMIDES, POLYAMIDE ACIDS OR ESTERS WITH SIDE CHAIN PHOTOCROSSLINKABLE GROUPS
展开▼
机译:带有侧链光可交联基团的光活性聚酰亚胺,聚酰胺酸或酯
展开▼
页面导航
摘要
著录项
相似文献
摘要
A photoactive polymer from the class of polyimides, polyamide acids and esters thereof comprises as a side-chain a photocrosslinkable group of the general formula (I)wherein the broken line indicates the point of linkage to the polyimide main chain and wherein: B is a straight-chain or branched alkyl residue which is optionally substituted, wherein one or more non-adjacent CH2 groups may independently be replaced by a group Q; D represents an oxygen atom or -NR1- wherein R1 represents a hydrogen atom or lower alkyl; and S3 represents a spacer unit. The polymers may be used as orientation layers for liquid crystals and in the construction of unstructured and structured optical elements and multi-layer systems.
展开▼
机译:聚酰亚胺,聚酰胺酸及其酯类的光活性聚合物包含通式(I)的可光交联基团作为侧链,其中虚线表示与聚酰亚胺主链的连接点,并且其中:B是a任选被取代的直链或支链烷基残基,其中一个或多个不相邻的CH 2基团可以独立地被基团Q取代; D代表氧原子或-NR 1-,其中R 1代表氢原子或低级烷基; S 3表示间隔单元。该聚合物可用作液晶的取向层,以及用于非结构化和结构化光学元件以及多层系统的构造中。
展开▼