FIELD: chemistry.
SUBSTANCE: method of obtaining alkyd resin includes the operation of mixing in a capacity reactor, connected to a flowing tubular reactor, vegetable oils and polyatomic alcohol in the presence of a catalyst - 10% solution 2-ethylhexanate lead and while heating and the subsequent poly-etherification in the presence of dicarboxylic acid and xylene. Supply of the catalyst is carried out through a measuring hopper, connected at the inlet of the flow reactor, at a speed of not more than 10 l/min. at the poly-etherification stage to the reaction mass is added 10% paratoluenesulfonic acid solution to the xylene at a speed of not more than 10 l/min. Loading of this solution is also carried out through the measuring hopper of the flow reactor.
EFFECT: colour reduction of alkyd resin solution and acceleration of drying of coatings based on it while using reactors of large volumes and increasing the quality of varnish obtained from alkyd resin.
1 cl, 1 dwg
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