تفاعل #79447

معادلة التفاعل

ethanol

triisobutylaluminum

ethylene

methanol

ethylene

→

ethylene/1-octene

ظروف التفاعل

المعالجة

1. 1
   أخرىTo a 2 liter-stainless steel autoclave thoroughly purged with nitrogen, 600 ml of hexane and 300 ml of 1-octene
2. 2
   workup.ADDITIONwere introduced
3. 3
   أخرىwas elevated to 60° C
4. 4
   أخرىpolymerization
5. 5
   درجة الحرارةto maintain the total pressure at 3.0 Kg/cm2-G
6. 6
   أخرىto terminate
7. 7
   أخرىthe polymerization
8. 8
   أخرىthe unreacted ethylene was purged out
9. 9
   أخرىThe resulting reaction solution
10. 10
    أخرىto precipitate a polymer
11. 11
    أخرىThe polymer was separated by filtration
12. 12
    أخرىdried overnight under reduced pressure

الإجراء التجريبي

To a 2 liter-stainless steel autoclave thoroughly purged with nitrogen, 600 ml of hexane and 300 ml of 1-octene were introduced, and the temperature of the system was elevated to 60° C. Then, 1 mmol of triisobutylaluminum and 0.5 ml (0.001 mmol in terms of Zr) of the catalyst solution prepared above were injected into the autoclave together with ethylene to initiate polymerization. Thereafter, only ethylene was continuously fed to maintain the total pressure at 3.0 Kg/cm2-G, and the polymerization was performed at 70° C. for 60 minutes. Then, a small amount of ethanol was fed to the system to terminate the polymerization, and the unreacted ethylene was purged out. The resulting reaction solution was introduced into a large excess of methanol to precipitate a polymer. The polymer was separated by filtration and dried overnight under reduced pressure, to obtain a long-chain branched ethylene/1-octene random copolymer.

المصدر