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
1
—O—[—(CH
2
CH
2
O)
m
(CH(CH
3
)CH
2
)—O]
n
—R
2
in which m=0-100, n=0-100, where n+m is at least equal to 1,
R
1
is a C
1
- to C
6
-alkyl radical,
R
2
is a C
1
- to C
6
-alkyl radical, where R
2
may be different from R
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.
该发明涉及一种制备烷基二醇的方法,通过在多烷基乙
二醚的存在下
水合烷基氧化物来实现,该多烷基乙
二醚的
化学式为
R
1
—O—[—(CH
2
CH
2
O)
m
(CH(CH
3
)CH
2
)—O]
n
—R
2
其中m=0-100,n=0-100,其中n+m至少等于1,
R
1
是C
1
-到C
6
-烷基基团,
R
2
是C
1
-到C
6
-烷基基团,其中R
2
可能与R
1
不同,但至少对于50摩尔%的多烷基乙
二醚,m+n大于或等于11。