Process for recycling polymers having repeating ether linkages

Details Process for recycling polymers having repeating ether linkages Process for recycling polymers having repeating ether linkages

C - Chemistry, Metallurgy

07

C

C07C 43/11 (2006.01) C07C 29/00 (2006.01) C07C 31/20 (2006.01) C07C 41/18 (2006.01) C07C 41/26 (2006.01) C08J 11/14 (2006.01)

Patent

CA 2128788

2128788 9316976 PCTABS00025 The present invention is a process for converting high molecular weight essentially water insoluble polymers having repeating or multiple ether linkages in the polymer backbone into their corresponding alcohols and other monomeric and lower weight oligomeric units by forming an aqueous mixture of the polymer in a ratio by weight of liquid water to polymer of at least 1:1, preferably neutral water, and heating the mixture under autogeneous pressure at a temperature of from about 200 ·C to about the critical temperature of water (374 ·C), more preferably from about 200 ·C up to about 350 ·C. Heating is continued for a period of time sufficient to depolymerize the polymer, depending on temperature and the amount of water present, and the number of polymeric ether linkages in the feedstock, and the amount of conversion desired.

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