Polyester composition and film made therefrom
AssigneeToray Industries, Inc.
InventorsNobuyuki Kagami, Masatoshi Aoyama, Masaru Suzuki, Keisuke Oshima
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Abstract
The invention is a polyester composition containing crosslinked polymer particles with ester bonds at the main chain. The particles are excellent in affinity to polyesters, and so the films formed from the polyester compositions do not have the particles falling off during high speed running, and do not have flaws in the film surfaces. The invention can prevent the generation of white powder and the flaws of magnetic faces caused by falling-off particles, and prevent the contamination in the production of films, even though these are problems caused when various conventional particles are added, and is especially suitable for use as products such as magnetic films.
Claims23
A polyester composition comprising crosslinked polymer particles with an ester bond at the main chain, said particles including at least a polyester formed from a polybasic acid or any of its ester formable derivatives and a polyhydric alcohol.
Dependencies are inferred from the claim text.