Method of recovering polyester fibers and cellulosic powder from polyester/cotton textile waste
AssigneeVenture Chemicals, Inc.
InventorsJack C. Cowan, Tommy Thrash
Life of this patent
Estimating the term…
Abstract
A method of recovering useful polyester fibers and cellulosic material from textile wastes containing blended polyester/cellulosic fibers wherein the textile waste is treated with anhydrous hydrochloric acid gas under reaction conditions sufficient to degrade the cellulosic material, the treated waste is mechanically degraded to convert the reacted cellulosic material to a fine powder, and thereafter the cellulosic material is separated from the polyester fibers.
Claims10
A method for recovering polyester fibers and cellulosic material in useful form from textile wastes containing blended polyester/cellulosic fibers comprising treating the textile waste with from about 0.3% to about 3% by weight of the cellulosic material in the waste of anhydrous hydrochloric acid gas at a temperature in the range from about ambient to about 180.degree. F. for a period from about 5 minutes to about 48 hours, mechanically degrading the reacted cellulosic material to a fine powder, and separating the polyester fibers from the reacted cellulosic material, wherein said cellulosic material is selected from the group consisting of cotton and rayon.
A method of separating the polyester from the cellulosic material in textile wastes containing resin treated, blended polyester and cellulosic fibers which comprises treating the textile waste with from about 0.3% to about 3% by weight of the cellulosic material in the waste of anhydrous hydrochloric acid gas at a temperature in the range from about ambient to about 180.degree. F. for a period from about 5 minutes to about 48 hours, mechanically degrading the reacted cellulosic material to a fine powder, and separating the polyester fibers from the reacted cellulosic material, wherein said cellulosic material is selected from the group consisting of cotton and rayon.
Dependencies are inferred from the claim text.