Process for producing poly(alkylene oxide) in the presence of a phosphazenium salt or compound
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United States of America Patent
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Dec 16, 2003
Grant Date -
Jun 5, 2003
app pub date -
Sep 3, 1999
filing date -
Feb 20, 1996
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Abstract
The present invention provides a novel salt useful as an active species in an organic reaction and represented by the following chemical formula (1): ##STR1## wherein n stands for an integer of from 1 to 8, Z.sup.n- represents an n-valent anion of an active hydrogen compound, a, b, c and d each stands for a positive integer, and Rs represent the same or different hydrocarbon groups. Also disclosed is a simple and efficient process for producing a poly(alkylene oxide) by polymerizing an alkylene oxide compound in the presence of the salt represented by the chemical formula (1).
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