Stabilization of polyethylene grit

Details Stabilization of polyethylene grit Stabilization of polyethylene grit

1993-12-01

1995-10-24

Hoke, Veronica P.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

524153, 524291, 524303, 524353, C08K 5526

Patent

active

054610974

ABSTRACT:
A process is described for stabilizing polyethylene grit in which a sterically hindered phenol and an ester of phosphorous or of hypophosphorous acid are added to said grit, wherein the sterically hindered phenol in melt form and the ester of phosphorous or of hypophosphorous acid are made available to the polyethylene grit within a ground polyolefin matrix in which the ester is incorporated, the polyolefin matrix being compatible with the polyethylene grit.

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patent: 4187212 (1980-02-01), Zinke et al.
patent: 4290941 (1981-09-01), Zinke et al.
patent: 4490323 (1984-12-01), Thomson
patent: 4510271 (1985-04-01), Muhle et al.
patent: 4891392 (1990-01-01), Abe et al.
patent: 5053444 (1991-10-01), Trotoir

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