Melt-processed blends containing poly(vinyl alcohol)

U.S. Patent Number: 5744546

Abstract: Polymers containing a high percentage of vinyl alcohol units are difficult to process into sheet, film, injection-molded objects, or fibers. Such melt-processing is greatly enhanced by admixing certain hydrogenated block copolymers formed by sequential anionic polymerization of butadiene and styrene, followed by hydrogenation, then followed by grafting of maleic anhydride.

Inventors: Diaz; Thierry Christian Claude (Roquefort Les Pins, FR); Meyer; Jean-Philippe Gaetan (Grasse Le Plan, FR); Cruz; Carlos Alfonso (Holland, PA)

Assignee: Rohm and Haas Company (Philadelphia, PA)

Application Number: 08/798,417

Issued: 1998-04-28

Expired: 2006-04-28

Classes: 525/57 ; 525/60

Field of search: 525/57,60

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