GB312609A - Improved compositions or materials comprising cellulose derivatives - Google Patents

Abstract

312,609. British Celanese, Ltd., (Assignees of Schneider, G.). May 28, 1928, [Convention date]. Compositions containing cellulose esters or ethers.-Plastic or celluloid-like masses and other products having a basis of organic esters or ethers of cellulose are prepared with the use of aliphatic acidyl derivatives of nuclearly chlorinated amines of the benzene series as solvents or plasticizers; these solvents or plasticizers reduce the inflammability of the cellulosic products. Suitable amine derivatives are acetyl-, propionyl- or butyrylchlor-aniline. The amine derivatives may be incorporated at any stage in the manufacture, and there may be included, as desired, fillers, dyes, pigments, &c., other plasticisers such as triphenyl or tricresyl phosphate or alkyl or aryl sulphonamides or sulphonanilides, or other compounds capable of reducing inflammability such as calcium sulphate or aluminium fluoride. The examples describe the preparation of (1) a celluloid-like product from cellulose acetate, alcohol, benzene, and o-chloracetanilide; (2) a moulding powder from cellulose propionate, benzene, propionyl o-chloraniline, and a pigment; (3) a product as in (1), but with tricresyl phosphate as an additional ingredient. The Specification as open to inspection under Sect. 91 (3) (a) describes the use of acidyl derivatives of halogenated amines in general as plasticizers for cellulose esters in general, and specifies acetyl-, propionyl-, and butyrylbromaniline as suitable plasticizers. Also. it includes examples describing (1) a plastic composition prepared from ethyl cellulose, alcohol, and butyryl monobromaniline, and (2) a like product containing tricresyl phosphate as an additional ingredient. This subject-matter does not appear in the Specification as accepted.