Structure/properties relationships in photoinitiators of polymerization .9. The behaviour of a new bis alpha-sulphonyl ketone derivative

被引：7

作者：

Fouassier, JP ^{[1
]}

Lemee, V ^{[1
]}

Espanet, A ^{[1
]}

Burget, D ^{[1
]}

MorletSavary, F ^{[1
]}

DiBattista, P ^{[1
]}

Bassi, GL ^{[1
]}

机构：

[1] LAMBERTI SPA,I-21041 ALBIZZATE,ITALY

来源：

EUROPEAN POLYMER JOURNAL | 1997年 / 33卷 / 06期

关键词：

D O I：

10.1016/S0014-3057(96)00167-X

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 photochemistry of a new alpha-sulphonyl acetophenone characterized by high efficiency in the radical polymerization of acrylic coatings is presented. Its photochemical behaviour and the excited-state processes have been studied using time resolved laser spectroscopy and steady-state photolysis techniques; the photopolymerization activity has been evaluated. The photoinitiator works according to a beta cleavage process in the tripler state (rate constant less than or equal to 1.8 x 10(5) sec(-1)). Interactions with e.g. isopropanol, methylacrylate and methyldiethanolamine led to bimolecular quenching rate constants of 10(3), 7.4 x 10(5) and 3.2 x 10(8) mol(-1) sec(-1), respectively. The main applications are UV curable inks and can be found in UV thin layer pigmented systems. One of its important peculiarities is the absence of odour developed after curing. Primary toxicological evaluations show its safety in handling. (C) 1997 Elsevier Science Ltd.

引用

页码：881 / 896

页数：16

共 16 条

[1]

ALLEN NS, 1993, EUR POLYM J, V29, P60

[2] PHOTOSENSITIZER/PHOTOINITIATOR INTERACTIONS IN COPOLYMERIC SYSTEMS BEARING SIDE-CHAIN THIOXANTHONE AND ALPHA-MORPHOLINO ACETOPHENONE MOIETIES [J].