A STUDY OF THE PHOTODECOMPOSITION PRODUCTS OF AN ACYLPHOSPHINE OXIDE AND 2,2-DIMETHOXY-2-PHENYLACETOPHENONE

被引：23

作者：

BAXTER, JE

DAVIDSON, RS

HAGEMAN, HJ

HAKVOORT, GTM

OVEREEM, T

机构：

[1] CITY UNIV LONDON,DEPT CHEM,NORTHAMPTON SQ,LONDON EC1V 0HB,ENGLAND

[2] AKZO RES LABS,ARNHEM,NETHERLANDS

来源：

POLYMER | 1988年 / 29卷 / 09期

关键词：

Amines - Chromatographic Analysis--Applications - Organic Compounds--Decomposition - Polymethyl Methacrylate--Curing - Ultraviolet Radiation--Applications;

D O I：

10.1016/0032-3861(88)90264-9

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The photodecomposition of 2,4,6-trimethylbenzoyldiphenylphosphine oxide and 2,2-dimethoxy-2-phenylacetophenone was investigated under normal ultraviolet curing conditions. The rate of formation and the identity of the many photodecomposition products produced by each photoinitiator were similar, whether amines (triethylamine or N-methyldiethanolamine) were present or not. Experimental evidence indicates that the role of amines is predominantly one of oxygen scavenger. It was also established that the shelf-life (stability) of the photoinitiator 2,4,6-trimethylbenzoyldiphenylphosphine oxide is short when present in an epoxydiacrylate/N-methyldiethanolamine ultraviolet curable formulation. The decomposition products identified indicated that this is due to the occurrence of transesterification and hydrolysis reactions.

引用

页码：1575 / 1580

页数：6

共 15 条

[1] ACYLPHOSPHINE OXIDES AS PHOTOINITIATORS FOR A TIO2 PIGMENTED ACRYLIC RESIN [J].