Abstract: Described are molded bodies comprising bond material based on cellulose acetate as a bonding agent and reinforcing natural cellulose fibers or natural cellulose-containing fibers. These components are characterized by the fact that the cellulose acetate has a degree of substitution (DS) of approximately 1.2 to 2.7 and the molded bodies have a Vicat temperature of at least approximately 160.degree. C. and the ratio of the weight of cellulose acetate to the natural cellulose fibers or natural cellulose-containing fibers is approximately 10:90-90:10. These molded bodies are produced by mixing cellulose acetate with the natural cellulose fibers or the natural cellulose-containing fibers in a ratio by weight of approximately 90:10-10:90, in particular 15:85-85:15, in the total moisture content is adjusted to at least approximately 3% by weight, with respect to the total amount of the cellulose acetate in the mixture, and this mixture is molded at a temperature of approximately 220.degree. to 280.degree. C.

Abstract: A plasticized cellulose acetate is described with a content of a modified cellulose acetate A comprising a grafted oligomer of a cyclic ester, in particular in the form of .epsilon.-caprolactone, which comprises additionally a plasticizing agent in the form of an oligomer B of a cyclic ester, and the terminal carboxyl group of the oligomer is esterified with an alcohol or an alcohol derivative having at least one free hydroxyl group, with a boiling point of at least approximately 120.degree. C. and a melting point of no more than approximately 180.degree. C. and the ratio of weight of component A to B is represented by the formula (I)0.3.ltoreq.A/(A+B).ltoreq.0.95 (I).This plasticized cellulose acetate can be produced advantageously for example when an oligomer B in the form of the reaction product of a cyclic ester, in particular in the form of .epsilon.

Abstract: There are described filaments on the basis of a cellulose acetate soluble in acetone, the degree of polymerization (DP) of the cellulose acetate being between about 110 and 210 and the degree of substitution (DS) preferably between about 2.2 and 2.7. Optically isotropic spinning solutions can be obtained, the cellulose acetate concentration of which is about 35 to 47 mass-%. When such an optically isotropic spinning solution is spun, in particular by dry spinning, filaments are obtained in a profitable manner because the costs connected with the recovery of the acetone can be appreciably lowered, without impairing the desirable properties of the filaments, which are suitable in particular for the production of cigarette filter tow.