Other

Nauchno-proizvodstvennoe Obiedinenie 'norplast'

Nikolai S Enikolopov

Fridrikh S Dyachkovsky

Olga I Kudinova

Ljudmila A Novokshonova

Tatyana A Maklakova

Jury A Gavrilov

Leonid A Kostandov

Leonid A Akopian

Sergei S Ivanchev

Anatoly A Syrov

Boris V Polozov

Oleg N Primachenko

Zorislav N Polyakov

Alexandr A Staroselsky

Otar P Mchedlov-Petrosian

Vladimir P Tkachenko

Anatoly I Nepomnyaschy

Valentin P Krasnokutsky

Susanna M Karpacheva

Mikhail G Brusilovsky

Viktor A Pekarsky

Semen F Sholk

Mikhail I Boiko

Mikhail I Boilko

Lidia A Filmakova

Leonid I Kurakin

Pavel P Sherstnev

Elena L Akopian

Saibdzhan S Negmatov

Yury A Polivanov

Minas G Chentemirov

Tatyana A Pekarskaya

Vilitary B Pavlov

Naum D Lerman

Ekaterina P Lukienko

Oleg K Maimur

Khristofor A Markarian

Khaim-Mordkhe A Brikenshtein

Mikhail A Markevich

Levon O Parsamian

Arkady L Iljushin

Suleiman K Matkarimov

Valeryan M Muratov

Jury G Gorbachev

Svetlana A Gavrilina

Anatoly F Poluyanov

Lidia P Khorkhorina

There is provided a method wherein the source material, rubber or vulcanization products is pulverized in an extruder wherein it is first compressed by a force of 0.2 to 0.7 MPa, then subjected simultaneously to a pressure ranging from 0.2 to 50 MPa and a shear force ranging from 0.03 to 5 N/mm.sup.2 while heating the material to a temperature ranging from 80.degree. to 250.degree. C. and then cooling said material to a temperature ranging from 15.degree. to 60.degree. C. The source materials can be used rubber goods, such as used tires and rejects of tire industry, footwear and industrial rubber production.

Method of making powder from rubber and vulcanization products

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

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

A process for preparing epoxy resin comprises a step of allowing a mixture of epichlorohydrin, 2,2-bis(p-hydroxyphenyl)propane, and a solvent in the presence of an alkali used in an amount of from 0.4 to 5% by weight of the epichlorohydrin to stay at a temperature of from 45.degree. to 70.degree. C. to obtain a homogeneous mass. Subsequently an alkali used in an amount of from 45 to 50% by weight of the epichlorohydrin is added to the resultant mass, and polycondensation is conducted at a temperature of 70.degree. to 90.degree. C. under stirring to obtain the end product.

Process for preparing epoxy resin

The process for producing mineral fillers with graft peroxy groups for polymers according to the present invention comprises treatment of mineral fillers, at a temperature of from 50 to 150.degree. C. under a pressure of from 1.33.10.sup.2 to 4.10.sup.5 Pa (lmmHg to 4 atm), with an organosilicon compound of the formula:

Process for producing mineral fillers with graft peroxy groups for

According to the invention, the method for producing mineral polymer fillers containing graft hydroperoxide groups consists in treating mineral fillers at a temperature of 50.degree. to 150.degree. C. and a pressure of 1.33.10.sup.2 to 4.10.sup.5 Pa (1 mm Hg to 4 atm) with organosilicon compounds of the general formula:

Method for producing mineral fillers containing graft hydroperoxide

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Moscow, Russia

Nikolai S Enikolopov