申请人:Deglmann Peter
公开号:US20120264910A1
公开(公告)日:2012-10-18
The present invention relates to a process for preparing carbonates by reacting propylene oxide, ethylene oxide, styrene oxide and/or cyclohexene oxide with carbon dioxide in the presence of one or more catalysts of the formula I
where
R
1
is hydrogen, C
1
-C
6
-alkyl, C
1
-C
6
-haloalkyl, NR′
4
—(CH
2
)
2-6
—where R′ is C
1
-C
6
-alkyl;
R
2
is hydrogen, C
1
-C
4
-alkyl, C
1
-C
4
-haloalkyl, halogen, amino, nitro, C
1
-C
6
-alkoxy or cyano;
R
3
, R
4
are each hydrogen or together are a butadienylene moiety which bears the R
5
substituent;
R
5
is C
1
-C
4
-alkyl, C
1
-C
4
-haloalkyl, halogen, amino, nitro, C
1
-C
6
-alkoxy or cyano;
M is Zn(II), Mg(II), Cr(II), Cr(III), Co(II), Co(III), Fe(II) or Fe(III); and
X
1
, X
2
are each OCOCH
3
, OCOCF
3
, OSO
2
C
7
H
7
or halogen.
More particularly, the invention relates to a process for preparing cyclic carbonates, and to a process for preparing aliphatic polycarbonates using these catalysts I, and to particularly preferred catalysts of the formulae Ia and Ib.
本发明涉及一种通过在存在式I催化剂中,将丙烯氧化物、乙烯氧化物、苯乙烯氧化物和/或环己烯氧化物与二氧化碳反应制备碳酸盐的方法,其中:R1为氢、C1-C6烷基、C1-C6卤代烷基、NR′4—(CH2)2-6—,其中R′为C1-C6烷基;R2为氢、C1-C4烷基、C1-C4卤代烷基、卤素、氨基、硝基、C1-C6烷氧基或氰基;R3、R4均为氢或共同为具有R5取代基的丁二烯基;R5为C1-C4烷基、C1-C4卤代烷基、卤素、氨基、硝基、C1-C6烷氧基或氰基;M为Zn(II)、Mg(II)、Cr(II)、Cr(III)、Co(II)、Co(III)、Fe(II)或Fe(III);X1、X2均为OCOCH3、OCOCF3、OSO2C7H7或卤素。特别地,本发明涉及一种制备环状碳酸酯的方法,以及使用这些催化剂I制备脂肪族聚碳酸酯的方法,以及特别优选的Ia和Ib式催化剂。