What is ADHESIVES?

Some varieties of adhesives are made from the proteins or alkali proteins which are isolated from the residues resulting from the extraction or expres: ion f oils from seeds, and.n particular hempseed and castorbeans. These are treated with suitable bases, such as the alkaline earth hydroxides, or magnesia, and with an alkali salt, which will react slowly with the bases and form alkali hydroxide, the resulting product being then mixed with dilute alkali hydroxide solution. Adhesives are also made from seaweeds, and from various starches and gelatinous bodies, such as gums and glues.

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Definition of  ADHESIVES