Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – At least one aryl ring which is part of a fused or bridged...
Patent
1997-02-21
1998-10-13
Acquah, Samuel A.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
At least one aryl ring which is part of a fused or bridged...
528361, 528491, 528492, 528493, 528495, 528499, 528502, 528503, 524726, 524729, 524765, 524767, 524768, 524770, 524772, 524800, 435135, 435141, 435146, 435271, C08K 516, C08G 6306, C12P 762
Patent
active
058212990
ABSTRACT:
The present invention relates to a process for separating polyhydroxyalkanoate (PHA) from a biomass comprising the PHA, the process comprising: a) treating the biomass with a PHA solvent and a marginal nonsolvent for PHA; b) removing any insoluble biomass, thereby leaving behind a solution of PHA and marginal nonsolvent for PHA; and c) removing the PHA solvent from the solution, thereby resulting in a suspension of precipitated PHA in the marginal nonsolvent for PHA. Optionally, the process further comprises removing the marginal nonsolvent for PHA, thereby leaving behind the PHA. The present invention further relates to the suspension and the PHA produced by the process.
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Bleich, J., Muller, B.W., and Wa.beta.mus, W., (Aug. 15, 1993) "Aerosol Solvent Extraction System-A New Microparticle Production Technique", International Journal of Pharmaceutics 97(1-3) 111-117.
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Acquah Samuel A.
Corstanje Brahm J.
Hersko Bart S.
Suter David L.
The Proctor & Gamble Company
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