Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – Treating polymer containing material or treating a solid...
Reexamination Certificate
2006-03-15
2011-12-06
Boykin, Terressa (Department: 1765)
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
Treating polymer containing material or treating a solid...
C526S348000, C530S344000, C530S412000
Reexamination Certificate
active
08071714
ABSTRACT:
The invention relates to a process for separating and/or purifying organic compounds susceptible to crystallization by means of crystallizing and dissolving comprising the following steps:a) depositing the composition in the head of a separation and/or crystallization column;b) crystallizing by means of a cooling gradient;c) pumping the solvent at optimal flow rate Fc;d) entraining the components while they are not crystallized to the end of the column;e) stopping the pumping of the solvent until reaching the lowest temperature of the interval established by the cooling gradient;f) heating the column;g) beginning new pumping by means of applying flow rate Fe;h) collecting the eluates; andi) detecting by means of detectors.
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Boykin Terressa
Merchant & Gould P.C.
Polymer Characterization, S.A.
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