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Free Books / Reference / 20th Century Formulas Recipes Processes Vol1 / |  |
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Casein Cements |
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Free Books / Reference / 20th Century Formulas Recipes Processes Vol1 / | |
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Casein Cements |
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This section is from the "Henley's Twentieth Century Formulas Recipes Processes" encyclopedia, by Norman W. Henley and others.
Borax.............. 5 parts
Water.............. 95 parts
Casein, sufficient quantity.
Dissolve the borax in water and incorporate enough casein to produce a mass of the proper consistency.
The casein is made feebly alkaline by means of soda or potash lye and then subjected for about 24 hours to a temperature of 140° F. Next follow the customary admixture, such as lime and water glass, and finally, to accomplish a quicker resinification, substances containing tannin are added. For tannic admixtures to the partially disintegrated casein, slight quantities—about 1 per cent—of gallic acid, cutch, or quercitannic acid are employed. The feebly alkaline casein cement containing tannic acid is used in the well-known manner for the gluing together of wood.
Make a paste with 16 ounces casein, 20 ounces slaked lime, and 20 ounces of sand, in water.
Dissolve casein in a concentrated solution of borax.
Make a paste of casein and water glass.
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