Waterproof varnish. simple recipes

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FACTORY TECHNOLOGIES AT HOME - SIMPLE RECIPES
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Waterproof varnish. Simple recipes and tips

Factory technologies - simple recipes

Directory / Factory technology at home - simple recipes

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To prepare waterproof varnish, ferrous sulfate is dissolved in water, a soap solution is added and the resulting precipitate of ferrous soap is filtered. If this precipitate is dried and dissolved in carbon disulfide or benzene, then a varnish is obtained that leaves a waterproof layer on fabrics and paper.

If it is desirable to have a colorless varnish, then instead of ferrous sulfate, a solution of alum is taken and alumina (aluminum) soap is obtained.

There is another way: the fabric is impregnated with a saturated aqueous solution of alum, dried and stretched. Then the stretched fabric is smeared on both sides with a hot strong solution of ordinary soap, as a result of which a film of alumina soap is formed on the fabric. After that, the fabric is washed, dried and rolled between rollers. She receives gloss, water resistance and partly fire resistance.

Author: Korolev V.A.

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