Process for removing contaminants from polycarbonate solutions

Details Process for removing contaminants from polycarbonate solutions Process for removing contaminants from polycarbonate solutions

1974-09-24

1976-02-17

Briggs, Sr., Wilbert J.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

210 24, 260 775D, 260DIG33, C08G 6374, C08G 6362

Patent

active

039391183

ABSTRACT:
The contaminating inorganic compounds such as alkali metal salts or alkali metal hydroxides which remain in a polycarbonate solution prepared by reacting phosgene with a dihydroxy-aryl compound are removed by contacting the solution with a molecular sieve.

REFERENCES:
patent: 3066116 (1962-11-01), Schillo et al.
patent: 3161488 (1964-12-01), Eastwood et al.

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