Method for preparing ester end-capped polyalkylene ether

Details Method for preparing ester end-capped polyalkylene ether Method for preparing ester end-capped polyalkylene ether

1993-11-24

1994-09-06

Prescott, Arthur C.

Organic compounds -- part of the class 532-570 series

Organic compounds

Carboxylic acid esters

528408, 528409, 528410, 528411, C07C 6724, C08G 5968

Patent

active

053449649

ABSTRACT:
A method for preparing ester end-capped polyalkylene ether is disclosed. Cyclic ether monomers are subjected to ring-opening polymerization at a temperature of 10.degree.-80.degree. C. and a pressure of 0-10 atm in the presence of a solid acid of a mixed oxide of group III and group IV elements serving as catalyst and a mixture of acid and acid anhydride serving as molecular weight moidifier. The group III and group IV elements used should have a Ho index of +3.0 to -10.0.

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patent: 4510333 (1985-04-01), Pruckmayr
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patent: 4728722 (1988-03-01), Mueller
patent: 4803299 (1989-02-01), Mueller
patent: 5210283 (1993-05-01), Kahn et al.
patent: 5262562 (1993-11-01), Hollingsworth et al.

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