Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From phenol – phenol ether – or inorganic phenolate
Patent
1980-07-07
1982-07-06
Hoke, V. P.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From phenol, phenol ether, or inorganic phenolate
528370, 528371, 528372, 528492, 528502, 528198, C08J 310
Patent
active
043384293
ABSTRACT:
The present invention relates to a process for working up alkaline two-phase mixtures which have been obtained in the synthesis of polycarbonates by the two-phase boundary process, characterized in that for the separation of the alkaline two-phase mixture into an organic phase and an aqueous phase, the mixture is supplied with shearing energy and/or added are one or more cationic emulsifying agents and/or dispersing agents and/or in that, for the separation of the acidified two-phase mixture into an organic phase and an aqueous phase, the mixture is supplied with shearing energy and/or added are one or more cationic emulsifying agents and/or dispersing agents and/or in that the organic phase which was separated off after the acidification is washed with water to which one or more water-soluble, organic anionic compounds have been added.
REFERENCES:
patent: 3143525 (1964-08-01), Ott
patent: 3184431 (1965-05-01), Deanin et al.
patent: 3275601 (1966-09-01), Schnell et al.
patent: 3294741 (1966-12-01), Schnell et al.
patent: 3879347 (1975-04-01), Serini et al.
patent: 3879348 (1975-04-01), Serini et al.
Methoden der Organischen Chemie, (Houben-Weyl), vol. I/1, 1958, pp. 218-221.
Bottenbruch Ludwig
Freitag Dieter
Goossens John
Serini Volker
Bayer Aktiengesellschaft
Harsh Gene
Hoke V. P.
Pope Lawrence S.
Preis Aron
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