Reaktion #350551

Reaktionsgleichung

quinoline

pyridine

→

Naphthalene

Reaktionsbedingungen

Aufarbeitung

1. 1
   Sonstigea glass transition temperature width (ΔTg) of 52° C.
2. 2
   Sonstigea Mettler softening point of 250° C.
3. 3
   Sonstigewas conducted at 100° C.
4. 4
   Filtrationfollowed by filtration with a 0.05 μm membrane
5. 5
   Filtrationfilter
6. 6
   Sonstigeto remove the pyridine-insoluble matter
7. 7
   SonstigeThen, from the soluble matter, pyridine was removed
8. 8
   Sonstigeto obtain a pyridine-soluble pitch

Vorschrift

Naphthalene was polymerized at a temperature of from 200° to 400° C. in the presence of a HF.BF3 catalyst to obtain a pitch which has an optical anisotropy of 100 volume % as observed under a polarization microscope, an optically anisotropic structure of a "rough flow type", a glass transition temperature width (ΔTg) of 52° C., a quinoline-insoluble content of 18.5% by weight, a Mettler softening point of 250° C. and an elemental composition as analyzed of C: 94.8 wt % and H: 5.2 wt %. This pitch was finely pulverized. Then, 200 ml of pyridine was added to 5 g of this pitch, and extraction was conducted at 100° C., followed by filtration with a 0.05 μm membrane filter to remove the pyridine-insoluble matter. Then, from the soluble matter, pyridine was removed to obtain a pyridine-soluble pitch.

Quelle