Open AccessRecent Developments in Radical Photoinitiator Chemistry
Author(s) -
Alan Cunningham,
V. Desobry,
Kurt Dietliker,
R. Hüsler,
David G. Leppard
Publication year - 1994
Publication title -
chimia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.387
H-Index - 55
eISSN - 2673-2424
pISSN - 0009-4293
DOI - 10.2533/chimia.1994.423
Subject(s) - photoinitiator , radical , curing (chemistry) , opacity , photochemistry , materials science , photopolymer , polymer chemistry , chemistry , polymer science , polymer , composite material , organic chemistry , optics , polymerization , physics , monomer
Radiation curing is an established technology used in many industrial manufacturing processes. New applications and technical specifications stimulate the continuous development of tailor-made photoinitiators which can efficiently meet specific requirements. A new class of radical photoinitiators, bisacylphosphine oxides (BAPO), give four initiating radicals per photoinitiator molecule and undergo photo-bleaching of the low-energy absorption band. These features make the compounds highly efficient for radiation curing of highly opaque white pigmented systems, thick coatings, or fiber-reinforced formulations.