Chemistry Reference
In-Depth Information
O
O
C
CH
2
O
CH
C
O
9
CH
2
O
N=N
CN
6
g 10 N 64 I
A
A
A
By polymer reaction
B
(e.g. Frenzel, 1981):
CH
3
O
Si
CH
2
6
O
COO
OCH
3
g 5 S 46 N 108 I
By supramolecular
interactions such as
H-bonding
A
A
A
B
(e.g. Kumar
et al.
, 1992):
CH
CH
2
O
......
N
COO
CH
2
O
COOH
O
C
OCH
3
6
Figure 3.6. Polymerizations and polymer reactions for synthesis of side-group type
liquid crystalline polymers.
studied, but have included epoxides, cyclic siloxanes, malonate deriva-
tives, diols and others. Polymer reactions often found in the synthesis of
side-group type liquid crystalline polymers are esterification and Si
−
H addi-
tion (hydrosilylation). Special attention has to be paid to the approach of
polymer reactions because the reactions are usually not in perfect control.
