ISSN 1070-4272, Russian Journal of Applied Chemistry, 2008, Vol. 81, No. 2, pp. 331!332. + Pleiades Publishing, Ltd., 2008.
Original Russian Text + E.M. Battalov, S.V. Kolesov, Yu.A. Prochukhan, A.A. Fatykhov, Yu.B. Monakov, 2008, published in Zhurnal Prikladnoi Khimii,
2008, Vol. 81, No. 2, pp. 343!344.
Postpolymerization of Oligoether Acrylate Formed
by Reaction of Diethylene Glycol Diglycidyl Ether
with Acrylic Acid
E. M. Battalov, S. V. Kolesov, Yu. A. Prochukhan,
A. A. Fatykhov, and Yu. B. Monakov
Institute of Organic Chemistry, Ufa Scientific Center, Russian Academy of Sciences,
Ufa, Bashkortostan, Russia
Received May 23, 2007
Abstract-Postpolymerization of the epoxy3acrylic oligomer derived from an aliphatic epoxy resin was
The first report on a posteffect is apparently dated
1938 ; the effect was observed in photopolymeriza-
tion of methyl methacrylate. By now postpolymeriza-
tion effects have been reported for all vinyl monomers
and oligomers. In all the cases, the point is that long-
lived radicals with a lifetime of several minutes to
tens of hours are formed [2! 4].
Epoxy!acrylic oligomers are characterized by high
photopolymerization rates, which complicates study-
ing their curing kinetics. Therefore, examination of
posteffects in photoinitiated polymerization of epoxy!
acrylic oligomers makes it possible to relatively
readily derive information valuable for describing
the process as a whole.
In our study we used epoxy!acrylic oligomer
formed by esterification of an aliphatic diepoxide
[DEG-1, TU (Technical Specification) 6-05-1747!76]
with acrylic acid (AA). The structure of the oligoether
was determined by elemental analysis and
by IR and NMR spectroscopy. The polymerization ini-
tiators were benzophenone and uranyl sulfoxide com-
plex . The IR radiation source was a DRT-400 me-
dium-pressure mercury lamp. The distance from a sub-
strate being irradiated to the UV source was 0.14 m.
The dynamic viscosity was measured with a Reotest
2.1 device. The hydrogen bonds in the oligomer were
H NMR spectroscopy. The NMR spectra
were recorded on a Bruker AM-300 spectrometer with
a working frequency of 300 MHz; the solvent was
, and the internal reference was TMS. Analysis
of the spectra and assignment of the signals were
performed by 2D NMR correlation spectroscopy
(COSY H!H, C!H).
Previously, we have described a posteffect in photo-
sensitized (benzophenone, uranyl sulfoxide complex)
Fig. 1. Variation of the dynamic viscosity h of the epoxy3
acrylic oligomer based on DEG-1 aliphatic epoxy resin
after UV irradiation for 15 s. (t) Time. Photoinitiator, M:
(1) benzophenone, 1.0 0 10
. 2DHSO (DHSO
is dihexyl sulfoxide), 1.2 0 10