From Wikipedia, the free encyclopedia. Harry Potter and the Deathly Hallows is the 2010/2011 two-part finale of the Harry Potter film series. Both Part 1 and Part 2 were directed by David Yates, written by Steve Kloves, and form the screen adaptation of the novel of the same name by J. K. Rowling.
Acetate fibers are molded from solutions of cellulose acetate in organic solvents (triacetate cellulose in a mixture of methylene chloride and alcohol, secondary cellulose acetate in acetone), usually by the so-called dry method.By this method filaments, the so-called acetate silk, are obtained.ater acetate fiber production decreased after the appearance of new types of valuable synthetic fibers. In 1967 the world output of acetate fibers was 397,000 tons, 6.4 percent of the total production of chemical fibers. Rogovin, Z. A. Osnovy khimii i tekhnologii proizvodstva khimicheskikh volokon, vol. 1, 3rd ed.
Cellulose acetate is the acetate ester of cellulose. It was first prepared in 1865. Cellulose acetate is used as a film base in photography, as a component in some coatings, and as a frame material for eyeglasses; it is also used as a synthetic fiber in the manufacture of cigarette filters and playing cards.fter it is formed, cellulose acetate is dissolved in acetone into a viscous resin for extrusion through spinnerets (which resemble a shower head). As the filaments emerge, the solvent is evaporated in warm air via dry spinning, producing fine cellulose acetate fibers.