APPENDIX. 



RECENT PATENTS GRANTED FOR THE IMPROVED MANU- 

 FACTURE AND UTILISATION OF CASEIN. 



(Reprinted from " The Oil and Colour Trades Journal".) 



THE TREATMENT OF CASEIN AND OTHER ALBUMINOUS 

 SUBSTANCES. 



R. Desgeorge, merchant, 5 Place de la Charite, Lyons, and 

 F. Lebriel, chemist, 11 Rue Bouchet, Villeurbanne (Rhone), 

 claim : (1) A process for the treatment of albuminous 

 substances for obtaining non-inflammable products in imita- 

 tion of horn, shell, ivory, celluloid and the like, consisting in 

 adding to said substances a solution of chloride of sodium, and 

 submitting the product to an electrolytic treatment with 

 the use of metallic electrodes. (2) The process as in claim 1, 

 wherein electrodes of such nature are used as to impart colour 

 to the finished product. (3) The process as in claim 1 or 2, 

 wherein the electrolytic treatment is continued until complete 

 insolubility of the product is produced. 



PRODUCING PLASTIC MASSES FROM CASEIN. 



J. Kathe, 50 Ubierring, Cologne on the Rhine, Germany, 

 declares this invention to be described in the following state- 

 ment : In the production of plastic masses from casein 

 according to the German patent 147,994, the disadvantage 

 arises that the plasticity of the casein cannot be attained 

 either by damping or by the use of high pressure and heat, 

 so that a process is claimed in which use is made of small 

 quantities of acids. The present invention consists in that the 

 use of chemicals is wholly abolished, and a more plastic mass 



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