Removal of hydrogenation catalyst from polymer solutions by cont

Details Removal of hydrogenation catalyst from polymer solutions by cont Removal of hydrogenation catalyst from polymer solutions by cont

1990-11-23

1992-04-14

Michl, Paul R.

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

Synthetic resins

Treating polymer containing material or treating a solid...

523310, 528490, C08F 608

Patent

active

051049724

ABSTRACT:
A process is provided comprising the steps of contacting a Group VIII metal hydrogenation catalyst residue containing polymer solution with a silicate, and recovering a polymer solution comprising less than 5 ppm by weight, based on the solution, of the Group VIII metal. In a preferred embodiment, the silicate is calcium silicate, magnesium silicate or diatomaceous earth.

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patent: 4098991 (1978-07-01), Kang
patent: 4278506 (1981-07-01), Irvin
patent: 4471099 (1984-09-01), Trepka
patent: 4595749 (1986-06-01), Hoxmeier

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