Ethylene → Ethylene styrene

HRID 1256867Notes

Reaction equation

HRID 1256867 reaction equation
[CH2:1]=[CH2:2].[CH2:3]=[CH:4][C:5]1[CH:10]=[CH:9][CH:8]=[CH:7][CH:6]=1>>[CH2:3]=[CH:4][C:5]1[CH:10]=[CH:9][CH:8]=[CH:7][CH:6]=1.[CH2:1]=[CH2:2]

Participants

3

Reactant 2

HCID 6325Ethylene2×HCID 7501Styrene

Product 1

HCID 22558332Ethylene styrene

Procedure

367 mL of toluene, TIBA (1.8 mmol) and 25 mL of styrene were placed in a 1 L autoclave, which had been dried by heating, at room temperature under a nitrogen atmosphere. After making the temperature thereof to 70° C. under stirring, 7.5 mL of a toluene solution of (9-ethyl-1,2,3,4-tetrahydro-1-fluorenyl)-bis(N,N-dimethylaminobenzyl)scandium obtained in the item (E) of Example 1 (0.027 mmol) and triphenylcarbenium tetrakispentafluorophenylborate (0.027 mmol), which had been mixed in advance, was added thereto. The mixture was polymerized for 10 minutes, and further polymerized for 5 minutes while maintaining the pressure to 0.2 MPa with ethylene. Thereafter, ethylene was depressurized, and 25 mL of styrene was newly added, followed by polymerizing for 10 minutes. As a result, 43.8 g of a styrene-ethylene triblock copolymer was obtained.

Workup

  1. additionhad been mixed in advance
  2. additionwas added
  3. customThe mixture was polymerized for 10 minutes
  4. customfurther polymerized for 5 minutes
  5. customfollowed by polymerizing for 10 minutes

Sources & evidence

ORD record
ord-47fb59100e6c4f848ac318a7107cca9d
Source dataset
uspto-grants-2013_06
Patent number
US08461270B2

Reaction notes

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