ing particularly suitable for use with the present compounds. (2) Cellulose derivatives.Included herein are the cellulose esters such as cellulose acetate, cellulose triacetate, cellulose nitrate, cellulose propionate, cellulose acetate butyrate, ethyl cellulose, cellophane, and similar products. (3) Coumarone/indene resins.These are thermoplastic addition products obtained by heating mixtures of