Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.