226 DAIRY TECHNOLOGY 



ready for use. An antiseptic should be added to prevent 

 fermentation. 



There are many patented formulas for the manufac- 

 ture of casein glue. Borax, ammonia, lime, and various 

 alkaline salts are used in this connection singly or in com- 

 bination. 



Closely allied to the casein glues and of similar composi- 

 tion are several kinds of casein putties and stopping. 

 These materials are employed in wood working and cabinet 

 making. 



Casein Paints. It has long been recognized that the 

 addition of milk to whitewash increases its adhesiveness 

 and durability. This result is principally due to a combina- 

 tion of the casein and lime. This compound, formed by the 

 combination of casein with certain other substances, forms 

 the basis of all the numerous casein paints of to-day. 



Scherer gives the following formula for a paint for out- 

 side work: 



100 parts by weight of casein, soluble in alkali. 

 100 " " " " caustic lime from marble. 

 800 " ' " " levigated chalk. 

 2 to 2 \ " " " " ultramarine (for white only), 

 i part " " " borax. 



On the market to-day are casein paints of all kinds 

 and colors, liquid and powder, some of which are: Casein 

 Enamel Paint, Kalsomine Wash, Quick-Drying Casein 

 Paint, Cold Water Paint, Boiled Oil Substitute, Water- 

 proof Paint for Playing Cards, Casein Cement Paint, etc. 

 Similar paints are prepared by the use of the whole milk 

 instead of merely the casein constituent. 



Milk-cement Paint. A most effective and durable 

 paint can be made from milk and cement by mixing one 

 gallon of milk and about four pounds of Portland cement, 



