ES471274A1 - A procedure for the preparation of a copolieter-glycolterminated in ester (Machine-translation by Google Translate, not legally binding)
- Google Patents
A procedure for the preparation of a copolieter-glycolterminated in ester (Machine-translation by Google Translate, not legally binding)
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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EIDP Inc
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EI Du Pont de Nemours and Co
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Priority to ES471274ApriorityCriticalpatent/ES471274A1/en
Publication of ES471274A1publicationCriticalpatent/ES471274A1/en
An ester-terminated copolyether glycol is prepared by copolymerization of tetrahydrofuran and an alkylene oxide or cyclic acetal in a reaction mixture containing, in addition to tetrahydrofuran and the alkylene oxide or cyclic acetal, (1) a polymeric catalyst which contains alpha-fluorosulfonic acid groups and (2) a precursor of an acyl ion such as acetic anhydride. (Machine-translation by Google Translate, not legally binding)
ES471274A1978-06-291978-06-29A procedure for the preparation of a copolieter-glycolterminated in ester (Machine-translation by Google Translate, not legally binding)
ExpiredES471274A1
(en)