Ethylene → Ethylene styrene

To a polymerization reactor under high purity nitrogen atmosphere, 10 ml of purified styrene and 20 ml of toluene were introduced and reaction temperature was controlled to 50° C. Ethylene of 4 atm was added to saturate and then 5 ml of methylaluminoxane (2.1 M toluene solution, Akzo Company product) were introduced. 0.44 ml (3.75 mmol of Ti) of toluene solution in which one of the metallocene catalysts is dissolved was added while vigorously agitating. After agitating the reaction mixture for 1 hour, 10 wt % of chloric acid-ethanol solution was added to terminate a reaction, the reactant was filtered, washed with ethanol and dried in a vacuum oven of 50° C. to obtain a final styrene/ethylene copolymer. Polymerization results and physical properties of polymers for each catalyst are shown in Table 3.

1. customreaction temperature
2. customwas controlled to 50° C
3. concentrationto saturate
4. addition5 ml of methylaluminoxane (2.1 M toluene solution, Akzo Company product) were introduced
5. additionwas added
6. stirringAfter agitating the reaction mixture for 1 hour
7. customto terminate
8. customa reaction
9. filtrationthe reactant was filtered
10. washwashed with ethanol
11. customdried in a vacuum oven of 50° C.

ORD record

ord-529efbd917ea4573a84b94ac398edaf2

Source dataset

uspto-grants-2009_09

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US07592401B2