Other

Po Stavropolpolimer

Institut Khimicheskoi Fiziki an Sssr

Groznensky Filial Oppo

Fridrikh S Dyachkovsky

Tatyana A Maklakova

Olga I Kudinova

Ljudmila A Novokshonova

Nikolai S Enikolopov

Jury A Gavrilov

Leonid A Kostandov

Viktor I Zhukov

Leonid A Akopian

Sergei S Ivanchev

Alexandr A Staroselsky

Jury M Petrov

Gennady P Belov

Vladimir P Tkachenko

Otar P Mchedlov-Petrosian

Galina S Sergienko

Alexandr G Liakumovich

Ardalion N Ponomarev

Gennady Petrovich Belov

Jury Mikhailovich Sivakov

Elena Isaakovna Ljustgarten

Khaim-Mordkhe A Brikenshtein

Ekaterina P Lukienko

Olga N Reznikova

Nikolai Petrovich Shestak

Jury G Gorbachev

Mikhail I Boiko

Natalya V Kartasheva

Maria Nikolaevna Dyadjunova

Valentina I Tsvetkova

Boris A Uvarov

Anatoly I Germashev

Pavel Alexandrovich Vernov

Oleg M Zvyagin

Minas G Chentemirov

Levon O Parsamian

Anatoly F Poluyanov

Ivan Davydovich Shevlyakov

Elvira A Uvarova

Viktor S Oskin

Mikhail I Boilko

Leonid Alexandrovich Shilov

Anatoly D Pomogailo

Vladimir P Konovalov

Alla P Lisitskaya

Zinaida M Dzhabieva

Valery I Lazutin

Nina S Gorkova

Valery A Yatsenko

Saida R Ivolgina

Vladimir L Proskurnin

Malik S Gabutdinov

Method of preparing 1-butene and/or hexenes

Process for producing butene-1

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

A catalyst for polymerization, copolymerization and oligomerization of olefins and diolefins is described, which is a compound having the general formula MX.sub.n wherein M is a metal belonging to IVA -- VIA groups of the Periodic System or a cobalt, X is a halogen, hydrogen, cyclopentadienyl, alkoxy-, aryloxy-, or amido group, and n is an integer denoting the valency of M; a compound having the general formula M'R.sub.p Z.sub.k-p wherein M' is a metal of I--III groups of the Periodic System, R is a hydrocarbon radical, Z is a halogen, hydrogen, alkoxy-, aryloxy- or amido group, k is an integer denoting the valency of M', 1.ltoreq.p.ltoreq.k; or compound having the general formula MR.sub.m X.sub.n-m, wherein 2.ltoreq.m.ltoreq.n, said component being chemically bonded with the surface of a carbon-chain polymer carrier through the fragment ##STR1## WHEREIN R' = H, CH.sub.3, C.sub.2 H.sub.5, CH.sub.2 = CH.sub.2, C.sub.6 H.sub.5 ;

Catalyst of polymerization, copolymerization and oligomerization of

The method of dimerization of alpha-olefins consists in mixing at least one alpha-olefin with a two-component catalyst consisting of organic compounds of titanium, having the general formula Ti (OR).sub.4, and of aluminum, having the general formula AlR.sub.3, where R is an alkyl having from 1 to 6 carbon atoms, or an aryl, in a medium of a hydrocarbon solvent, at a temperature of 0.degree. to 100.degree. C and a pressure from 1 to 30 atm. Said constituents of the catalyst are pretreated with an ethylene-hydrogen mixture, containing from 5 to 95 percent by volume of hydrogen, at a temperature of from 0.degree. to 100.degree. C and a pressure of the ethylene-hydrogen mixture from 0.2 to 15 atm., for a period of time from 1 to 120 minutes. The method ensures high yields of butene-1 and hexenes, and high selectivity of the catalyst to said products. The butene-1 content of the butane mixture obtained in the process of ethylene dimerization is as high as 99 percent. The yield of butene-1 is from 80 to 345 g per gram of Ti(OR).sub.4 per hour. The hexene content in the dimerizate obtained in the process of dimerization of propylene, or a mixture of ethylene and butene-1, is 25 percent. The yield of hexenes is from 4 to 80 g per gram of Ti(OR).sub.4 per hour. The formation of polymers is significantly reduced.

Method of dimerization of alpha-olefins

Growing community of inventors

Moscow, Russia

Fridrikh S Dyachkovsky