Method of purifying bioabsorable polymer

Details Method of purifying bioabsorable polymer Method of purifying bioabsorable polymer

1994-08-25

1995-12-26

Dodson, Shelley A.

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

Synthetic resins

Treating polymer containing material or treating a solid...

528354, 528357, 528361, 528487, 528491, 528492, 528495, 528497, C08G 6308, C08F 600

Patent

active

054789214

ABSTRACT:
A method for purifying a material containing a bioabsorbable polymer involves contacting the polymer with an extractant under supercritical conditions of temperature and pressure to extract residual impurities from the polymer and thereafter recovering the purified polymer. The method sharply reduces residual monomer levels in bioabsorbable polymers without altering polymer viscosity or melting point.

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