ISSN 1070-4272, Russian Journal of Applied Chemistry, 2008, Vol. 81, No. 1, pp. 91!94. + Pleiades Publishing, Ltd., 2008.
Original Russian Text + V.A. Kraikin, N.G. Gileva, E.A. Sedova, S.I. Kuznetsov, M.S. Lobov, Yu.N. Lavreshina, A.F. Sunagatullin, S.N. Salazkin, 2008,
published in Zhurnal Prikladnoi Khimii, 2008, Vol. 81, No. 1, pp. 95!98.
AND POLYMERIC MATERIALS
Synthesis, Microstructure, and Properties
of Block Copolyarylenephthalides
V. A. Kraikin, N. G. Gileva, E. A. Sedova, S. I. Kuznetsov, M. S. Lobov,
Yu. N. Lavreshina, A. F. Sunagatullin, and S. N. Salazkin
Institute of Organic Chemistry, Ufa Scientific Center, Russian Academy of Sciences,
Ufa, Bashkortostan, Russia
Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Moscow, Russia
Received July 5, 2007
Abstract-Two-step copolycondensation of 3-chloro-3-(4-phenoxyphenyl)phthalide and 3-chloro-3-(4-phenyl-
thiophenyl)phthalide was studied. The influence exerted by the sequence of loading the comonomers on the
order of incorporation of the monomer residues into the polymer chain and on the microstructure of the result-
ing copolyarylenephthalides was examined.
Among new classes of polymers synthesized in the
recent years, of much interest are polyarylenephthal-
ides, card aromatic polymers prepared by electrophilic
substitution reactions involving pseudomono- and
pseudodichlorides of o-keto carboxylic acids .
Polyarylenephthalides combine high softening point,
high heat resistance, and high chemical stability with
good solubility in organic solvents and unusual elec-
trophysical properties [1, 4].
It was demonstrated previously by the examples of
3-chloro-3-(4-phenoxyphenyl)phthalide I and 3-chlo-
ro-3-(4-phenylthiophenyl)phthalide II that pseudo-
monochlorides of o-keto carboxylic acids are capable
of not only self-condensation but also copolyconden-
sation . One-step copolycondensation of these
monomers yields random copolymers [6, 7].
In this study we performed two-step copolyconden-
sation of I and II, prepared polyblock copolyarylene-
phthalides with different lengths of (4,4`-oxydiphenyl)-
phthalide and (4,4`-thiodiphenyl)phthalide sequences,
and determined the microstructure and some proper-
ties of the synthesized polymers: