Process for reducing trace levels of metallic impurities in cycl

Details Process for reducing trace levels of metallic impurities in cycl Process for reducing trace levels of metallic impurities in cycl

1995-07-19

1997-04-22

Weber, Thomas R

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

Synthetic resins

Treating polymer containing material or treating a solid...

528498, 528499, C08C 204

Patent

active

056230427

ABSTRACT:
A process for reducing trace levels of metallic impurities in cyclized polyisoprene resin is disclosed. The process reduces trace levels of metallic impurities in cyclized polyisoprene resin by washing an impure organic solvent/cyclized polyisoprene resin solution at least once with a heated aqueous acidic solution, and subsequently washing the resin at least once with heated water.

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Perry's Chemical Engineers' Handbook, 6th Ed., 1984, McGraw-Hill, NY, NY, pp. 19-63 1984.

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