申请人:Cramail Henri
公开号:US20130005937A1
公开(公告)日:2013-01-03
The present invention relates to a method for preparing polyols of formula (I″)
R′
1
being H or an alkyl group, R″ being especially an alkyl group, A
1
, being an alkylene radical and R
3
, are being especially a group -A
2
-O—Y′, A
2
being an alkylene radical and Y′ being especially H,
said method especially comprising a step of epoxidation of a compound of formula
R″
1
being H or an alkyl group, A
1
being defined as above in formula (I″) and R
4
being especially a group -A
2
-O—Y
1
′, A
2
being defined as above in formula (I″) and Y′
1
being especially H,
in order to obtain a compound of formula
A
1
being defined as above, R′″
1
being H or an alkyl group and R
5
being especially a group of formula -A
2
-O—Y
2
′, A
2
being as defined above in formula (I″) and Y′
2
being especially H,
该发明涉及一种制备式(I″)的聚醇的方法,其中R′1为H或烷基,R″尤其为烷基,A1为亚烷基基团,R3尤其为一个-A2-O—Y′基团,A2为亚烷基基团,Y′尤其为H,所述方法尤其包括一步骤,即将式R″1为H或烷基,A1如上述在式(I″)中定义,R4尤其为一个-A2-O—Y1′基团,A2如上述在式(I″)中定义,Y′1尤其为H的化合物环氧化,以获得式A1如上述定义,R′″1为H或烷基,R5尤其为一个-A2-O—Y2′基团,A2如上述在式(I″)中定义,Y′2尤其为H的化合物。