Styrene → Benzene, ethenyl-, polymer with 1,3-butadiene

Temperatur

30 °C

In a 1.0-liter reactor equipped with a stirrer were placed 100 ml of styrene and 6.0 mmol as aluminum atom of methylaluminoxane obtained in the above Example 1 (1), and the resultant was stirred at the polymerization temperature of 30° C. for 30 minutes. Subsequently, 56.3 g of 1,3-butadiene was charged in a stainless steel catalyst-input tube which had been sufficiently replaced with nitrogen, and added to the reaction system, and, at the same time, 0.03 mmol as titanium atom of pentamethylcyclopentadienyltitanium trimethoxide was added. And polymerization was carried out at 40° C. for 5 hours with stirring. After reaction was over, methanol was poured to stop the reaction. Further, a mixture of methanol-hydrochloric acid was added to decompose the catalyst components. Then, washing with methanol was repeated three times. The yield of thus obtained styrene-1,3-butadiene copolymer was 41.4 g. Intrinsic viscosity measured in 1,2,4-trichlorobenzene at 135° C. was 1.63 dl/g.

1. customIn a 1.0-liter reactor equipped with a stirrer
2. additionadded to the reaction system
3. customAnd polymerization
4. waitwas carried out at 40° C. for 5 hours
5. stirringwith stirring
6. customAfter reaction
7. additionwas poured
8. customthe reaction
9. additionwas added
10. washThen, washing with methanol
11. custommeasured in 1,2,4-trichlorobenzene at 135° C.

ORD-Eintrag

ord-2ae417eca07742adab0aef133d5937a5

Quelldatensatz

uspto-grants-1993_11

DOI

10.6084/m9.figshare.5104873.v1

Patentnummer

US05260394