SU20807A1 - The method of obtaining plastics using casein treated with the initial condensation product of phenol with formalin and wood flour, as described in patent number 10398 - Google Patents

Description

The main patent No. 10398 (describes a method for the production of plastics, consisting in treating casein with the initial product of phenol-fluorine condensation with the addition of wood flour as a filler.,

The masses produced in this way have almost no plasticity and viscosity at all and require various mechanically-equipped instruments and methods for removing moisture, and for drying, high temperature and pressure to impart compactness and durability to products made from them.

The proposed modification of the method described in Patent No. 10398, in order to give the resulting masses the necessary plasticity, is that if the gypsum, taken as a mineral filling, is mixed into an homogeneous mass with an aqueous solution of protein substances treated with liquid condensation products of phenol or homologs with formalin, then after some short amount of time

This mixture will begin to thicken, at which mass will acquire good plasticity, will become granular and will separate the water. Thereafter, the mass is subjected to ordinary pressing to remove water, whereby a dense, uniform, viscous and plastic mass is obtained.

The plates taken out from under the press are dried in the usual way, pressed in special forms to obtain other NDI products and finally dried at elevated temperatures. If you take a mixture of gypsum with kaolin or chalk, or spar and process the above solutions of protein substances, you will get plastic masses that produce water with all the properties and qualities that occur when using one gypsum. In the same way, if some lightness of the products or their special strength is required, hydro, cellulose, wood flour, etc. materials are added to the gypsum before mixing it with the above protein solutions. Obtained by this method