ISSN 1070-4272, Russian Journal of Applied Chemistry, 2014, Vol. 87, No. 6, pp. 824−829. © Pleiades Publishing, Ltd., 2014.
Original Russian Text © E.T. Krut’ko, M.V. Zhuravleva, N.P. Ivanova, N.R. Prokopchuk, K.V. Vishnevskii, M.V. Popov, A.G. Bannov, Yu.L. Krutskii, 2014, published
in Zhurnal Prikladnoi Khimii, 2014, Vol. 87, No. 6, pp. 814−820.
AND POLYMERIC MATERIALS
Polyfunctional Imide-Containing Oligomer as Effective
Modiﬁ er of Epoxy 4,4'-Isopropylidenediphenol Compounds
E. T. Krut’ko
, M. V. Zhuravleva
, N. P. Ivanova
, N. R. Prokopchuk
, K. V. Vishnevskii
M. V. Popov
, A. G. Bannov
, and Yu. L. Krutskii
Belarussian State Technological University, ul. Sverdlova 13a, Minsk, 220006 Belarus
Novosibirsk State Technical University, pr. Karla Marksa 20, Novosibirsk, 830073 Russia
Received April 10, 2014
Abstract—The possibility of using a soluble polyfunctional imide-containing oligomer, oligomaleimidohydroxy-
phenylene, as a modiﬁ er of E-41r epoxy 4,4'-isopropylidenediphenol resin was examined. Introduction of this
modiﬁ er in an amount from 1.0 to 3.0 wt % enhances the hardness, impact strength, adhesion, and corrosion
resistance of imide-containing epoxy 4,4'-isopropylidenediphenol coatings on steel surfaces, i.e., improves their
Application of paint-and-varnish coatings is today
one of the most widely used and reliable methods for
protecting metal surfaces from corrosion.
The advantages of paint-and-varnish coatings over
other kinds of coatings are convenience and simplicity
of application, low cost, and possibility of restoration
and preparation of coatings with required properties of
The share of paint-and-varnish materials based on
film-forming polycondensation compounds (epoxy,
urea- and melamine-formaldehyde, alkyd, etc.) steadily
increases. Such paint-and-varnish materials are highly
resistant to aggressive media. In this context, it becomes
necessary to adequately evaluate the operation life of the
protective systems obtained.
Paint-and-varnish materials based on epoxy resins are
widely used in ship and machine building and in oil-and-
gas industry for protection of the equipment and pipelines
operating in contact with crude oil, petroleum products,
aqueous media, and solutions of salts, acids, and alkalis.
Despite high adhesion properties of coatings formed
on the basis of epoxy resins, their adhesion strength and
resistance to water and other aggressive media can be
It is known that several years are required to test the
protective properties of coatings under the operation
conditions. Such a long period is acceptable neither for
developers nor for producers. Accelerated tests furnish
information on the coating longevity under the conditions
of its forced degradation simulating the natural aging
mechanism within a short testing time. Electrochemical
methods are used as such accelerated testing methods.
The protective properties of paint-and-varnish coat-
ings are determined by a set of physicochemical prop-
erties which can be reduced to four characteristics :
(1) electrochemical and insulation properties of coat-
ings, (2) capability of ﬁ lms to decelerate the diffusion
and transfer of corrosion reagents to the metal surface,
(3) capability of coatings to passivate or electrochemi-
cally protect the metal, and (4) adhesion and mechanical
properties of coatings.
In this work, we developed and studied new ﬁ lm-
forming formulations based on epoxy 4,4'-isopropyli-
denediphenol resins, ensuring preparation of coatings
with improved protective properties.