Obtaining resin esters. simple recipes

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FACTORY TECHNOLOGIES AT HOME - SIMPLE RECIPES
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Obtaining resin esters. Simple recipes and tips

Factory technologies - simple recipes

Directory / Factory technology at home - simple recipes

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Rosin, consisting mainly of abietic and pimaric acids, when treated with organic substances containing an alcohol (hydroxyl) group (glycerol, phenol, etc.), forms resin acid esters.

These esters have a higher melting point and are more resistant to temperature influences. Esters are obtained by heating rosin with glycerin or other substances in an autoclave, in a vacuum, or in an open cauldron at high temperature.

Preparation glycerol ester is carried out as follows.

100 wt. h. rosin is heated to 180-210 ° C and, with stirring, 8-10 wt. hours of glycerin. The temperature is then raised to 310 °C. To the end add another 3 weight. hours of finely ground quicklime, and then the alloy is poured onto iron pans and allowed to cool.

The ether is highly soluble in oil and turpentine.

When these esters are mixed with resinate or linseed oil, good cheap varnishes of the most varied quality are obtained.

Author: Korolev V.A.

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