Process for preparing alkylene glycols
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United States of America Patent
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Issued Date -
Sep 7, 2006
app pub date -
Mar 1, 2006
filing date -
Mar 1, 2005
priority date (Note) -
Abandoned
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Abstract
The invention relates to a process for preparing alkylene glycols by hydration of alkylene oxides in the presence of polyalkylene glycol dialkyl ethers of the formula R.sup.1--O--[--(CH.sub.2CH.sub.2O).sub.m(CH(CH.sub.3)CH.sub.2)--O].sub.n---R.sup.2 in which m=0-100, n=0-100, where n+m is at least equal to 1, R.sup.1 is a C.sub.1- to C.sub.6-alkyl radical, R.sup.2 is a C.sub.1- to C.sub.6-alkyl radical, where R.sup.2 may be different from R.sup.1, with the proviso that for at least 50 mol % of the polyalkylene glycol dialkyl ether m+n is greater than or equal to 11.
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