Chemistry Reference
In-Depth Information
N
N
H
H
N
H
The
p
-xylylene intermediate then polymerizes:
N
N
n
There are, however, competing side reactions, such as dimerization [
108
]:
N
N
+
H
H
N
H
N
7.9 Sulfur-Containing Polymers
Industrially important sulfur-containing polymers are polysulfones and polysulfides. The materials
differ considerably in properties and in use.
7.9.1 Polysulfones
These materials are an important group of engineering plastics. Aliphatic polysulfones were first
synthesized at the end of the nineteenth century [
109
]. That synthesis was based on reactions of SO
2
