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FACTORY TECHNOLOGIES AT HOME - SIMPLE RECIPES
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Caseino-olive compositions. Simple recipes and tips

Factory technologies - simple recipes

Directory / Factory technology at home - simple recipes

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Preparation casein-linseed formulations based on the high emulsifying power of an aqueous solution of casein. In weak solutions, this emulsifying ability increases even more. The content of oil emulsion in casein paint improves the quality of the latter. These paints are superior to ordinary casein paints in setting strength, elasticity and strength. The dried layer of such paint gives a brilliant cover. Oils are applied drying, mainly with the addition of desiccants.

If casein-linseed paints must lie in stock, then casein solution cannot be prepared on caustic lime, since the latter forms lime soap with oil, which spoils the preparation. In this case, it is best to use a casein solution in borax. To protect against spoilage during storage, preservatives are added to caseino-linseed paints. Here are the recipes for these colors:

In an enameled or wooden bowl, pour 10 kg of casein into 25 liters of water and leave to swell overnight. Separately dissolve in a clean vat 60 liters of hot water, 1 kg of boric acid. 2,5 kg of borax and 0,5 kg of ammonium carbonate. Add with stirring this solution to the swollen casein and mix until a homogeneous solution is obtained. Boric acid is added as a preservative. Depending on the type of work, from 5 to 25% of linseed oil or linseed drying oil is mixed into the resulting solution, and thus casein drying oil is obtained.

For the preparation of casein-linseed paints, mineral paints are triturated in oil and the resulting paste-like mass is added to casein drying oil. Liquefaction, if necessary, of this paint is carried out by adding water or turpentine.

The caseino-olive paints obtained in this way are suitable for exterior painting, interior work, as well as for coating metal surfaces. They have some advantages over simple casein paints. These paints dry much faster and give a very durable coating. After an hour, a relatively strong coating is obtained, and after a few hours a second coat of paint can be applied. The quick drying of caseino-linseed paints is a major advantage over oil paints, which is especially important in damp climates. This paint is completely odorless. The surface covered with it, in 2-3-4 layers, can be polished in the usual way.

The coloring of iron is successfully carried out with casein-linseed paints, while ordinary casein paints adhere relatively poorly to iron. Rust and iron must be removed before painting. For the preparation of such paints, you can use the following components:

Black: 50 kg casein drying oil. 15 kg of black, pounded in oil.

Yellow: 50 kg casein drying oil. 25 kg of chrome yellow, pounded in oil.

White: 50 kg casein drying oil. 30 kg of chalk, pounded in oil.

Lead white: 50 kg casein drying oil. 50 kg of white lead, ground in oil.

Red: 50 kg casein drying oil. 50 kg of cinnabar, pounded in oil or. 100 kg of casein drying oil. 5,0 kg of red iron oxide, triturated in oil.

Blue: 40 kg of casein drying oil. 50 kg of Prussian blue, pounded in oil.

Green: 50 kg casein drying oil. 50 kg of chrome green, mashed in oil.

Ocher: 110 kg of casein drying oil. 50 kg of ocher, ground in oil.

Casein drying oil can also be prepared according to the following recipe:

  • Casein 34 wt. hours;
  • Linseed oil 28 wt. hours;
  • Joiner's glue 42 wt. hours;
  • Water 490 wt. hours;
  • Turpentine 28 wt. hours;
  • Borax crystalline 21 wt. h.

The glue is allowed to swell for 12 hours in water; then dissolve it with moderate heating, add to it a solution of borax and, after all, casein. When everything is dissolved, linseed oil is added and, after cooling, turpentine is mixed in. Everything is well mixed.

Good quick drying drying oil can be obtained as follows:

To 100 wt. hours of casein are added from 10 to 25 wt. hours from 1% to 10% soap solution and 20 wt. hours of slaked lime. The mixture is thoroughly mixed until a homogeneous mass is obtained. Then gradually add from 25 to 40 weight. hours of turpentine and so much water until the mass acquires the consistency of drying oil. For greater strength, a little ammonia is added, so that casein-calcium does not fall out. This drying oil substitute is much cheaper than drying oil and dries so quickly that paints ground with such drying oil can be applied layer by layer directly one after another.

Author: Korolev V.A.

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