REVIEW OF RF PATENTS FOR REFRACTORY INVENTIONS
Review prepared by the editorial staff of Novye Ogneupory
Translated from Novye Ogneupory, No. 2, pp. 58 – 59, February, 2012.
PROPPANT WITH POLYMER COATING
E. A. Pribytkov and V. G. Peichev
Patent RU 2395474
IPC C04B35/00, C09K8/80, C04B41/83
1. A proppant in the form of ceramic granules with poly
mer coating consisting of hardened epoxide resin with poly
ethylene polyamide in which a mixture of solid particles of
hexamethylenetetramine and novolacs soluble phenol-form
aldehyde resin are embedded, distinguished by the fact that
the mixture possesses particles with size in the range
100 – 120 mm and additionally contains solid particles of
resol phenolformaldehyde resin 5 mm and less in size, at the
following ratio (wt.%): novolacs phenol-formaldehyde resin
50 – 70 and resol phenol-formaldehyde resin, 30 – 50, with
ratio between the epoxide resin and polyethylene polyamide,
on the one hand, and the mixtures of novolacs phenol-form-
aldehyde resin with hexamethylenetetramine and with resol
phenol-formaldehyde resin (in dry matter), on the other
hand, from 1.5:1 to 1.5:3.
2. The proppant of Part 1 is distinguished by the fact
that the total quantity of components of the polymer coating,
scaled on the basis of dry matter, is 2 – 5% of the mass of the
3. The proppant of Part 1 is distinguished by the fact
that an additional agent of aminopropyltriethoxysilane is also
utilized in the polymer coating.
4. The proppant of Part 1 is distinguished by the fact
that the polymer coating on the surface of the ceramic gran
ules is deposited at room temperature.
Inventions Bulletin: Utility Models,
No. 21, 545 (2010)
A METHOD OF PRODUCING HIGH-TEMPERATURE
B. V. Shchetanov, Yu. A. Ivakhnenko, Yu. A. Balinova,
and S. M. Lunin
Patent RU 2395475
IPC C04B35/185, D01F9/08
1. A method of producing high-temperature alumi
num-oxide-based fiber that incorporates preparation of a fi
ber-forming solution containing a mixture of initial compo
nents, i.e., aluminum oxychloride, silica colloidal solution,
and organic polymer, fabrication of fiber from the fi
ber-forming solution and its subsequent heat treatment, dis
tinguished by the fact that the mixture of initial components
is used in the form of a dry concentrate the composition of
which corresponds, in terms of the ratio of aluminum and sil
icon oxides, to the required composition of the high-tempera
ture fiber, and that preparation of the fiber-forming solution
is realized by dissolution of a dry concentrate of the mixture
of initial components in water to achieve the required viscos
ity of the solution. Moreover, dissolution of the dry concen
trate of the mixture of initial components is performed in wa-
ter that has been heated to 40 – 60°C in open air with con-
stant stirring at a rate of rotation 200 – 400 rpm.
2. The method of Part 1 is distinguished by the fact that
the dry concentrate of the mixture of initial components is
produced by drying of the fiber-forming solution in an evap-
orator or spray dryer.
3. The method of Part 1 is distinguished by the fact that
the fiber produced from the fiber-forming solution is fabri-
cated by means of aerodynamic spraying of the solution.
4. The high-temperature discrete aluminum-oxide-based
fiber with ratio between the oxides Al
from 70/30 to
99/1 is distinguished by the fact that it is fabricated by the
method of Parts1–3.
The fiber that is obtained by the proposed method may
find extensive applications in the production of thermal insu
lating materials for high-temperature furnaces and the hot
sectors of power plants as well as other areas of the economy.
Through the use of the invention it becomes possible to
shorten the production cycle involved in the fabrication of
the fiber and increase the controllability of the process of re
ducing the fiber-forming solution to a required viscosity and
of the stability of the chemical composition and the proper
ties of the resulting fiber.
Bulletin, No. 21, 546 (2010)
A CERAMIC BORON-CARBIDE-BASED MATERIAL
AND METHOD OF FABRICATION OF THE MATERIAL
V. I. Rumyantsev, D. V. Korablev, V. N. Fishchev,
and S. S. Ordan’yan
Patent RU 2396232
IPC C04B35/563, C04B35/626
1. A ceramic boron-carbide-based material the micro
structure of which is formed by grains of E
C and one or
more refractory compounds, including borides of elements of
Refractories and Industrial Ceramics Vol. 53, No. 1, May, 2012
1083-4877/12/05301-0073 © 2012 Springer Science+Business Media, Inc.
OOO Intermet Inzhiniring, Moscow, Russia.
Subsequently we use the abbreviated name Bulletin.