Reactive melt extrusion grafting of thermoplastic polyvinyl alco

Details Reactive melt extrusion grafting of thermoplastic polyvinyl alco Reactive melt extrusion grafting of thermoplastic polyvinyl alco

1992-08-03

1994-11-29

Seidleck, James J.

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

525 74, 525 78, 525193, 525197, C08L 2904, C08L 5106, C08L 2326

Patent

active

053691687

ABSTRACT:
A method for preparing a compatible blend of polyolefin and thermoplastic polyvinyl alcohol comprising:
(a) melting polyolefin in the initial elements of a melt extruder,
(b) adding and melt blending an unsaturated carboxylic acid or anhydride with the melted polyolefin downstream in the extruder,
(c) adding peroxide to the melt blend and grafting the unsaturated carboxylic acid or anhydride onto the polyolefin, and
(d) melt blending thermoplastic PVOH into the grafted polyolefin/unsaturated carboxylic acid or anhydride melt mixture.

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Borggreve, R. J. M., R. J. Gaymans, J. Schuijer, "Brittle-Tough Transition in Nylon-Rubber Blends: Effect of Rubber Concentration and Particle Size" Polymer, 1987, vol. 28 Aug. (1489-1496).

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