Other

Sakhib M Aliev

Vagab S Aliev

Tofik A Gadzhiev

Vagif B Guseinov

Novruz I Guseinov

Magira A Agaeva

Nuri T Sultanov

Rafail S Sverdlov

Shamkhal A Mamedov

Zemfira A Ismailova

Farrukh R Gadzhiev

Medzhid A Mardanov

Vagif A Nagiev

Dzhavid N Khydyrov

Arif I Gasanov

Ali R Ismailov

The process comprises polymerization of liquid pyrolyzates of petroleum hydrocarbons when heating them in the presence of an initiator containing an organic peroxide and a metal salt of an organic acid. Fractions having boiling point of 10.degree. to 190.degree. C. are used as liquid pyrolyzates of petrocarbons.

Process for preparing polymeric petroleum resins

The process for preparing methyl isocyanate includes feeding methyl halide through a reaction mixture at a rate of 0.5 to 3 moles of methyl halide per mole of cyanate per hour, the contact time being 1 to 4 min and a molar ratio of an organic solvent to methyl halide being (3 to 5):1 with subsequent withdrawal of the product out of the reaction zone.

Process for preparing methyl isocyanate

A method for preparing .alpha.-naphthol according to the present invention comprises sulphonation of naphthalene with an equimolar amount of a concentrated sulphuric acid at a temperature ranging from 30.degree. to 85.degree. C. for a period of from 60 to 120 minutes in the presence of acetic anhydride whereafter .alpha.in an amount of from 0.5 to 1.5 mole per mole of naphthalene. The resulting naphthalene-.alpha.-sulphonic acid is fused with an alkali taken in an amount of 3-4 moles per mole of naphthalene-.alpha.-sulphonic acid at a temperature ranging from 180.degree. to 285.degree. C. for a period of from 10 to 30 minutes. The resulting melt consisting of the alkali metal .alpha.-naphtholate and the alkali metal sulphite is mixed with a polar solvent; the resulting mixture is acidified with a mineral acid taken in an amount equimolar relative to the alkali metal .alpha.-naphtholate, whereafter.alpha.-naphthol is separated from the resulting suspension. The method according to the present invention makes it possible to increase the yield of .alpha.-naphthol up to 98% of the theoretical amount and produce .alpha.-naththol with a purity of up to 99.5%.

Method for preparing .alpha.-naphthol

A process for preparing a film-forming composition comprising co-oligomerization of arylalkenes with conjugated dienes at a weight ratio therebetween of from 1:1 to 4:1 respectively, at a temperature within the range of between 60.degree. and 140.degree. C. in a medium of a hydrocarbon solvent in the presence of a co-oligomerization initiator, that is an organic peroxide or an organic hydroperoxide, and a molecular weight control agent. The hydrocarbon solvent is a petroleum fraction boiling within the range of from 160.degree. to 220.degree. C., or a hydrogenate of said petroleum fraction or naphthenic hydrocarbon. The molecular weight control agent is made of products of diene condensation of conjugated dienes with cyclodienes, or a dehydrogenate of said products of diene condensation, or a fraction with a boiling range of from 160.degree. to 220.degree. C. recovered from liquid products gasoline pyrolysis. The process is technologically simple; non-toxic hydrocarbon solvents are used therein. The resulting film-forming composition can be simultaneously used as a synthetic drying oil and as a synthetic varnish. Coatings produced from this composition possess high physico-mechanical characteristics (good drying ability, weather fastness, chemical stability, high adherence, elasticity, mechanical strength, high dielectric properties).

Process for preparing film-forming composition

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Baku, undefined

Sakhib M Aliev