Process for the preparation of polyoxybutylene-...

Details Process for the preparation of polyoxybutylene-... Process for the preparation of polyoxybutylene-...

C - Chemistry, Metallurgy

07

C

260/491.6

C07C 69/16 (2006.01) C07C 69/28 (2006.01) C08G 65/20 (2006.01)

Patent

CA 1219598

PROCESS FOR THE PREPARATION OF POLYOXYBUTYLENE- POLYOXYALKYLENE GLYCOL CARBOXYLIC ACID DIESTER Abstract of the Disclosure The invention relates to a process for the preparation of polyoxybutylene-polyoxyalkylene glycol carboxylic acid diesters through the reaction of tetrahydro- furan with at least one 1,2-alkylene oxide and a carboxylic anhydride in the presence of bleaching earth having a water content of less than 3 percent by weight as the catalyst.

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