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

1981-10-08

1983-10-25

Seccuro, Carman J.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

524243, 524244, 524324, 524326, 524100, 524323, 524333, 524342, 524345, 524348, 524350, 524351, 524353, 524417, 524427, 524442, 524443, 524448, 524451, 524492, 524585, 525187, 264176R, 264211, C08J 518, C08K 300, C08K 336, C08K 513

Patent

active

044120257

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.

REFERENCES:
patent: 2956035 (1960-10-01), Mock
patent: 3425981 (1969-02-01), Puletti et al.
patent: 4013622 (1977-03-01), DeJuneas et al.

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