C - Chemistry – Metallurgy – 08 – G
Patent
C - Chemistry, Metallurgy
08
G
402/344
C08G 75/14 (2006.01) C08G 75/02 (2006.01)
Patent
CA 1337836
A solid-state polymerization process for increasing the molecular weight of a polymer comprising heating within a heating zone at a temperature in of at least 200°C a crystalline polymer corresponding to the structure: [ (-A-S-)1-x(-A-S-S-)x ]n wherein A is a divalent substituted or unsubstituted aromatic radical, x is in the range of 0.5 to 0.001 and n is at least 200 wherein the volume of the heating zone not occupied with polymer is either under vacuum or is occupied with an inert gas.
599289
Fagerburg David Richard
Watkins Joseph John
Eastman Chemical Company
Fagerburg David Richard
Gowling Lafleur Henderson Llp
Watkins Joseph John
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