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Novel Multifunctional Polymeric Photoinitiators and Photo‐Coinitiators Derived from Hyperbranched Polyglycerol
Author(s) -
Chen Yu,
Loccufier Johan,
Vanmaele Luc,
Barriau Emilie,
Frey Holger
Publication year - 2007
Publication title -
macromolecular chemistry and physics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.57
H-Index - 112
eISSN - 1521-3935
pISSN - 1022-1352
DOI - 10.1002/macp.200700086
Subject(s) - curing (chemistry) , materials science , solubility , polymer chemistry , photoinitiator , chemical engineering , viscosity , inkjet printing , uv curing , inkwell , polymer science , polymer , chemistry , composite material , organic chemistry , engineering , monomer
A new class of hyperbranched PPIs and PPCs have been prepared. The introduction of compatibilizing groups such as MEEA or trimethylacetate enhanced their solubility in radiation‐curable formulations and led to an improved photoactivity compared with the corresponding MPI and MPC. Although the molecular weights of the subject PPIs and PPCs exceeded 800 g · mol −1 , the viscosities of the radiation‐curable formulations were still suitable for inkjet application. The combination of high photoactivity, low viscosity, and low extractability after curing rendered the resulting hyperbranched PPIs and PPCs attractive as components in the inkjet ink for inkjet printing, e.g., in food packaging.