Melt-processed blends containing poly(vinyl alcohol)

Details Melt-processed blends containing poly(vinyl alcohol) Melt-processed blends containing poly(vinyl alcohol)

C - Chemistry, Metallurgy

08

L

C08L 29/04 (2006.01) C08L 51/04 (2006.01)

Patent

CA 2160956

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 core/shell copolymers having either a rubbery, crosslinked core mainly of units derived from butadiene and/or an alkyl acrylate, or a non-cross-linked core derived mainly of units derived from an alkyl acrylate, and an outer shell mainly of units derived from methyl methacrylate. Such copolymers do not require the presence of functional groups capable of reaction with the hydroxyl groups of the poly(vinyl alcohol).

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