Other

Ljudmila A Novokshonova

Fridrikh S Dyachkovsky

Tatyana A Maklakova

Olga I Kudinova

Nikolai S Enikolopov

Jury A Gavrilov

Leonid A Kostandov

Leonid A Akopian

Vladimir P Tkachenko

Alexandr A Staroselsky

Otar P Mchedlov-Petrosian

Elena Isaakovna Ljustgarten

Khaim-Mordkhe A Brikenshtein

Valentina I Tsvetkova

Oleg M Zvyagin

Vladimir P Konovalov

Ekaterina P Lukienko

Elvira A Uvarova

Boris A Uvarov

Minas G Chentemirov

Levon O Parsamian

Mikhail I Boilko

Jury G Gorbachev

Anatoly F Poluyanov

Mikhail I Boiko

The composite material, which is a solid porous carrier, whose pores are filled with a polymer, a polyolefin having the molecular weight not less than 300,000, the degree of pore filling with said polymer being at least 4 percent of the total volume of the pores, in which the ratio of the carrier mass to the mass of the polymer is 50-99.5:50-0.5. The method of producing said composite material consists in precipitation, from the gas phase, of a complex organometallic catalyst consisting of a compound of a transition metal and of an organic compound of a metal in the 2nd or 3rd group of the Periodic Table, inside the pores of a solid porous carrier, and in polymerization of olefins from the gas phase on said catalyst, precipitated in the pores of the solid porous carrier, at a temperature of 50.degree.-165.degree. C. and a pressure of 1-60 atm. The composite material is characterized by high mechanical strength (compression strength reaching 100-200 kg/sq.cm) high frost resistance, and hydrophobic properties. The proposed method effectively controls the degree of filling the carrier pores with the polymer (from at least 4 percent of the total volume of the pores), and can be used to manufacture composite materials possessing a predetermined set of properties.

Method of producing a composite material

A catalyst according to the present invention for di-, oligo-, co- and poly- merization of vinyl monomers consists of an active phase comprising a compound of a transition metal of Groups IV-V of the periodic system deposited onto a polymeric carrier, viz, a macroporous copolymer of vinyl and divinyl monomers with a specific surface area of 30 to 700 m.sup.2 /g and a co-catalyst such as an organo-aluminum compound. The catalyst according to the present invention makes it possible to obtain dimers in high yields of more than 6,000 kg as calculated for 1 g of the transition metal for 2 hours and polymers in yields of up to 72 kg per 1 g of the transition metal. The catalyst according to the present invention makes it possible to control the particle size of the resulting (co) polymer which enables the use of the (co) polymer avoiding the stage of granulation.

Catalyst for di-, oligo-, co- and poly- merization of vinyl monomers

According to the invention, the method for applying a polymer coating onto the surface of a solid filler comprises deposition of a complex organometallic catalyst, containing a compound of a transition metal and an organic compound of a metal of the second or third groups of the periodic system, on the surface of the solid filler and liquid- or gas-phase polymerization of olefins at a temperature of 50.degree. to 170.degree. C. and a pressure of 1 to 60 atm on said catalyst deposited on the surface of the solid filler. The deposition is carried out in two stages. The first stage is gas-phase deposition of the first component of the catalyst, i.e. a compound of a transition metal, on the surface of the solid filler. The second stage is gas- or liquid-phase deposition of the second component of the catalyst, i.e. an organic compound of a metal of the second or third group of the periodic system. Polymer coatings produced by this method are marked by a high quality and uniformity, as well as good adhesion to the surface of the solid filler. The coating density is 0.7 to 0.95 g/cm.sup.3. The thickness of such coatings can be varied within a broad range from a minimum of 7.multidot.10.sup.-3 g/m.sup.2. The method according to the invention permits a considerable reduction in the consumption of the initial monomers and the catalyst; for example, the catalyst consumption can be reduced to a value as low as 0.001 to 0.1 percent of the weight of the filler on conversion to vanadium tetrachloride. The method is quite simple technologically.

Method for applying polymer coating composition

A porous heat-insulation material comprising blocks molded from granules of a porous mineral filler with a polyolefin coating. The coating thickness is 1/1000 to 1/25 of the average granule diameter; in contact regions, said granules are spaced from each other at a distance of from 0.5 to 2.0 of the coating thickness, and the mass ratio between said porous mineral filler and said polyolefin is 80-98:20-2, respectively. The material of this invention has a volume mass of from 60 to 250 kg/m.sup.3. The material features a high plasticity (its flexural strength is as high as 3-4 kgf/cm.sup.2). The compression strength of the material is 9-12 kgf/cm.sup.2. The material also has a low thermal conductivity; its thermal conductivity coefficient is 0.03-0.04 kcal/m.hr..degree.C. The material is substantially non-combustible.

Porous heat-insulation material

The composite material, which is a solid porous carrier, whose pores are filled with a polymer, a polyolefin having the molecular weight not less than 300,000, the degree of pore filling with said polymer being at least 4 percent of the total volume of the pores, in which the ratio of the carrier mass to the mass of the polymer is 50-99.5:50-0.5. The method of producing said composite material consists in precipitation, from the gas phase, of a complex organometallic catalyst consisting of a compound of a transition metal and of an organic compound of a metal in the 2nd or 3rd group of the Periodic Table, inside the pores of a solid porous carrier, and in polymerization of olefins from the gas phase on said catalyst, precipitated in the pores of the solid porous carrier, at a temperature of 50.degree.-165.degree. C. and a pressure of 1-60 atm. The composite material is characterized by high mechanical strength (compression strength reaching 100-200 kg/sq. cm) high frost resistance, and hydrophobic properties. The proposed method effectively controls the degree of filling the carrier pores with the polymer (from at least 4 percent of the total volume of the pores), and can be used to manufacture composite materials possessing a predetermined set of properties.

Composite material and method of producing same

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Moscow, Russia

Ljudmila A Novokshonova