Extrudable polyvinyl alcohol compositions containing thermoplast

Details Extrudable polyvinyl alcohol compositions containing thermoplast Extrudable polyvinyl alcohol compositions containing thermoplast

1990-07-12

1991-07-02

Welsh, Maurice J.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

524391, 525123, 25421124, C08L 7504

Patent

active

050286480

ABSTRACT:
An extruable polyvinyl alcohol composition useful for packaging and molding applications is prepared by melt blending polyvinyl alcohol and thermoplastic polyurethane to provide a product which has low water absorptivity, improved impact resistance, and improved low temperature/low humidity tensile properties. Useful extruded articles prepared from such compositions include films and bottles.
A method for extruding the polyvinyl alcohol composition comprises:

REFERENCES:
patent: 4464438 (1984-08-01), Lu
patent: 4611019 (1986-09-01), Lutzmann

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