Toluene → 1-Ethenyl-4-methylbenzene
Reaktionsgleichung
C[Al]1[CH2:7][CH2:6][CH2:5][CH2:4]O1.[C:8]1(C)[CH:13]=[CH:12]C=[CH:10][CH:9]=1>C([Ti](CC1C=CC=CC=1)(CC1C=CC=CC=1)CC1C=CC=CC=1)C1C=CC=CC=1>[CH3:4][C:5]1[CH:10]=[CH:9][C:8]([CH:13]=[CH2:12])=[CH:7][CH:6]=1Komponenten
4
Reagenzien, Katalysatoren, Lösungsmittel 1
Versuchsvorschrift
A syndiotactic poly-p-methyl-styrene in powder form is prepared according to the method described in Macromolecules, 1989, 22, 104. p-Methyl-styrene (0.5 mmoles) is polymerized in toluene (59 ml) at 50° C. for 24 hours, in the presence of tetrabenzyltitanium (5·10 moles) and methylalumoxane (0.3 g); 8.5 g of s-PpMS are obtained. A film about 100 microns thick is produced by compression molding at a pressure of 2 Kg/cm2 and at a temperature of 230° C. An amorphous film is thus obtained.