Anti-block compounds for extrusion of transition metal catalyzed

Details Anti-block compounds for extrusion of transition metal catalyzed Anti-block compounds for extrusion of transition metal catalyzed

1983-10-19

1985-09-10

Thurlow, Jeffery

Plastic and nonmetallic article shaping or treating: processes

Forming continuous or indefinite length work

Shaping by extrusion

264176R, 264300, D01F 102

Patent

active

045405387

ABSTRACT:
A non-volatile, anti-gel compound having a chain of at least about 5 repeat units of an alkylene oxide and which is soluble in olefin polymers, and an inorganic anti-block agent having a substantially neutral pH are added to a film grade transition metal catalyzed resin containing halide residues such as Ziegler-Natta catalyzed olefin polymer compositions to prevent: (1) gel streaking/pinstriping during film extrusion processes; (2) blocking of the extruded film; and (3) discoloration of the extruded film upon aging. The anti-gel compound has a molecular weight between about 200 and about 4,000,000 Daltons.

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