
7: POLY(ARYLENE ETHER SULFONE)S 179
OOS
O
O
Poly (biphenyl ether sulfone)
Poly (bisphenol A ether sulfone)
OS
O
O
C
CH
3
CH
3
O
O
Ether
S
Thioether
SS
Sulfide
S
O
O
Sulfone
C
O
Ketone
S
O
Sulfoxide
Figure 7.1 Functional groups and building blocks for
poly(ether sulfone) types.
is selectively deposited on a nucleating surface, i.e., a
supercooled surface, during or after the reaction, and
thus removed from the reaction medium [17].
Suitable solvents are either excess phenol or an inert
aromatic solvent. Preferred solvents are those in which
the 2,4
-isomer is more highly soluble than the bis-
(4-hydroxyphenyl)-sulfone, such a s chlorobenzene,
dichlorobenzene, and trichlorobenzene. ...