Direct removal of NI catalysts

Details Direct removal of NI catalysts Direct removal of NI catalysts

1984-11-23

1986-06-17

Schofer, Joseph L.

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

Synthetic resins

Treating polymer containing material or treating a solid...

528486, 528490, 528491, C08F 600

Patent

active

045957495

ABSTRACT:
A method is provided for separating metal catalyst contaminants from organic polymers, typically polymers derived from dienes and/or vinyl arenes, by treatment with a dicarboxylic acid and an oxidant which forms an insoluble metal compound, then separating the insoluble compound to remove the contaminating metal.

REFERENCES:
patent: 2893982 (1959-07-01), Campbell
patent: 3023201 (1962-02-01), Moberly
patent: 3780138 (1973-12-01), Hassell
patent: 4028485 (1977-06-01), Poloso et al.

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