Chemistry Reference
In-Depth Information
carbonated and bicarbonates. All components used are applicable without
preliminary drying.
The novel polyarylenestersulfoneketone containing from the cyclohexane
and phthalasynone fragments is produced via the reaction of nucleophylic
replacement of 1-methyl-4,5-bis(4-chlorbenzoyl)cyclohexane, 4,4′-dichlorbi-
sphenylsulfone and 4-(3,5-dimethyl-4-hydroxyphenyl)-2,3phthalasine-1-one.
The polymer is described by means of IR-spectroscopy with Fourier-transfor-
mation,
1
Н nuclear magnetic resonance, differential scanning calorimetry
and diffraction of X-rays. It is shown that the polymer is amorphous and
has high glassing temperature (200 °C), it is soluble in several dissolvents
at room temperature. The by-products are the “sewn” and graft copoly-
mers [207].
The block copolymers of low-molecular polyesterketoneketone and
4,4′{}-bisphenoxybisphenylsulfone (I) can be produced [208] by the reac-
tion of polycondensation. The glassing temperatures increase and melting
points lower of copolymers if the concentration of (I) increases. Block
copolymers, containing 32.63-40.7% of (I) have glassing temperature and
melting point 185-193 and 322-346 °С, respectively; the durability and
modulus in tension are 86.6-84.2 MPa and 3.1-3.4 GPa, respectively;
tensile elongation reaches 18.5-20.3%. Block-copolymers possess good
thermal properties and reprocessibility in melt.
The analysis of literature data and patent investigation has revealed
that the production of such copolymers as polyestersulfoneketones, liquid-
crystal polyestersulfones as well as the preparation of the mixes and melts
of polysulfones with liquid-crystal polyesters of certain new properties are
of great importance.
With the account for the upper-mentioned, we have synthesized poly-
estersulfones on the basis of oligosulfones and terephthaloyl-bis(
n
-oxy-
benzoic) acid [174, 186, 434] and polyestersulfoneketones on the basis of
aromatic oligosulfoneketones, mixes of oligosulfones with oligoketones
of various constitution and degree of polycondensation and different acid-
ic compounds [211, 212, 435].
7.6
AROMATIC POLYSULFONES
The stormy production development of polymers, containing aromatic cy-
cles like, for example, the polyarylenesterketones has happened within the
past decades. The polyarylenesterketones represent the family of polymers
