Paraloid extrusion aids for high molecular weight HDPE film resi

Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Mixing of two or more solid polymers; mixing of solid...

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C08L 2320, C08L 2310, C08L 2304, C08L 3312

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049636227

ABSTRACT:
A process for improving bubble stability, reducing film gauge variation and reducing melt fracture during extrusion and formation of film from a high density polyolefin of molecular weight above 225,000 to about 450,000 which comprises blending with said polyolefin about 0.1 to about 0.8% of an acrylic polymer polymerized from a monomer system comprising at least 50% by weight of methyl methacrylate.

REFERENCES:
patent: 4156703 (1979-05-01), Harrop

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