Removal of alkali metal methoxide catalyst residue from hydroxy-

Details Removal of alkali metal methoxide catalyst residue from hydroxy- Removal of alkali metal methoxide catalyst residue from hydroxy-

1993-07-06

1994-08-16

Schofer, Joseph L.

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

Synthetic resins

Treating polymer containing material or treating a solid...

528498, C08F 608

Patent

active

053388240

ABSTRACT:
A process for removing alkali metal alkoxide catalyst residue from anionically polymerized hydroxy terminated conjugated diene polymer. The process comprises contacting a solution of such a polymer with an adsorbent which can be an ultrastable Y zeolite in the hydrogen form or a large pore size, low surface area cationic exchange resin.

REFERENCES:
patent: 4039593 (1977-08-01), Kamienski et al.
patent: 4250270 (1981-02-01), Farrar
patent: 5212285 (1993-05-01), Diaz et al.

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