Linear polyethylene, fluorocarbon polymer and polyalkylsiloxane

Details Linear polyethylene, fluorocarbon polymer and polyalkylsiloxane Linear polyethylene, fluorocarbon polymer and polyalkylsiloxane

1988-01-28

1989-06-06

Marquis, Melvyn I.

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

Synthetic resins

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

525105, 524267, 524268, C08F 800

Patent

active

048372757

ABSTRACT:
The extrudability of linear polymers of ethylene such as low density copolymers of ethylene and C.sub.4 -C.sub.10 olefins (LLDPE) into thin films is improved by adding small amounts, e.g. 250 to 1000 ppm of each of a fluorocarbon polymer, e.g. polyvinylidene fluoride, and of a polyalkylsiloxane, e.g. poly(methyl-octyl-siloxane), to reduce melt fracture, head pressure and extruder power.

REFERENCES:
patent: 2888419 (1959-05-01), Safford
patent: 3963677 (1976-06-01), Enger
patent: 4028431 (1977-06-01), Futami et al.
patent: 4263414 (1981-04-01), West
M. Erchak, Jr., "Low Molecular Weight Polythenes", Polythene, Chapter 11, pp. 285-305, London (1960).
E. Paschke, Ziegler Process Polyethylene, Kirk-Othmer Encyclopedia of Chemical Technology, vol. 16, New York (1981).

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