Extraction process

Details Extraction process Extraction process

1984-04-16

1985-12-31

Nielsen, Earl

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

Synthetic resins

From carboxylic acid or derivative thereof

435135, 528496, C08G 6306

Patent

active

045622450

ABSTRACT:
A continuous process for the extraction of 3-hydroxybutyrate polymers from micro-organism cells wherein a non-solvent is added to the extracted syrup to permit separation of the polymer and, by distillation, the bulk of the extraction liquid, which may be a solvent
on-solvent mixture, is recovered for re-use. Preferably the non-solvent added to the syrup is also recovered in the distillation.

REFERENCES:
patent: 3044942 (1962-07-01), Baptist
patent: 3275610 (1966-09-01), Coty
patent: 4101533 (1978-07-01), Lafferty
patent: 4310684 (1982-01-01), Vanlautem et al.
patent: 4324907 (1982-04-01), Senior et al.
patent: 4391766 (1983-07-01), Barham et al.
"Physical Chemistry" by Mee, 5th Ed., 1954, p. 431.
"The Elements of Fractional Distillation" by Robinson et al., 3rd Ed., 1939, p. 14.

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