申请人:Technische Universitaet Wien
公开号:US20200231531A1
公开(公告)日:2020-07-23
Compounds of formula (I) are photoinitiators or photosensitizers in a photopolymerizable composition:
R
1
represents a monovalent, linear, branched or cyclic, aliphatic hydrocarbon group having 1 to 20 carbon atoms, optionally substituted with substituent(s) selected from —Cl, —Br, —OH, ═O, —NH—CO— OR
2
, —NH—CO—R
2
or free-radically or ionically polymerizable groups. Each R
2
is independently —H or C
1-6
alkyl; n is ≥1. If n=1, Z and Y are absent and X represents —OR
3
; if n is >1, Z represents —OR
4
—, Y represents —ORs— and X represents —H or —OH. R
3
represents —H or R
1
; and R
4
and R
5
each independently represent a bivalent hydrocarbon group. The polymerizable moieties as optional substituents of R
1
are polymerizable double or triple bonds, lactam, lactone and epoxide moieties, which are subjectable to ring-opening polymerization; and two of R
1
to R
5
may be linked to one another to form a ring or a dimer.
化合物的化学式(I)是光引发剂或光敏剂,用于光聚合组合物:R1代表一个一价的、线性的、支链的或环状的脂肪烃基,含有1至20个碳原子,可选择地取代为从—Cl、—Br、—OH、═O、—NH—CO—OR2、—NH—CO—R2或自由基或离子聚合基团中选择的取代基。每个R2独立地为—H或C1-6烷基;n≥1。如果n=1,Z和Y不存在,X代表—OR3;如果n>1,Z代表—OR4—,Y代表—ORs—,X代表—H或—OH。R3代表—H或R1;而R4和R5各自独立地代表一个二价的碳氢基团。作为R1的可选择取代基的聚合物基团是聚合的双键或三键、内酰胺、内酯和环氧基团,可进行环开聚合反应;R1到R5中的两个可以连接在一起形成环或二聚体。