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US 5,507,304 AGranted
Polymer blend composed of cellulose acetate and starch acetate used to form fibers, films and plastic materials and a process to prepare said blend
AssigneeHoechst Celanese Corporation
InventorsJoanne C. Maheras, John B. Hopkins, Jr., Heribert Tetzlaff
Life of this patent
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Abstract
A blend of cellulose acetate and starch acetate used to make fibers, filaments, yarns, fabrics, plastic materials and other uses is disclosed. Additionally, the invention relates to the process of making said blend; cigarette filters made from tow composed of said blend; cigarettes made with filters made from tow of said blend as well as acetate flake and other compositions containing said blend.
Claims2
Cigarette tow comprising cellulose acetate having a degree of substitution between 2.0 and 3.0;
- and starch acetate having a degree of substitution between 2.55 and 3 having about 25% of linear amylose and about 75% branched amylopectin.
Dependencies are inferred from the claim text.