Oxygen → Poly(2-vinyl pyridine)-b-polystyrene-b-poly(2-vinyl pyridine)

HRID 1373351Notes

Reaction equation

HRID 1373351 reaction equation
[CH2:1]=[CH:2][C:3]1[CH:8]=[CH:7][CH:6]=[CH:5][CH:4]=1.[CH:9]([C:11]1[CH:16]=[CH:15][CH:14]=[CH:13][N:12]=1)=[CH2:10].C1COCC1.O=O>CO>[CH2:1]=[CH:2][C:3]1[CH:8]=[CH:7][CH:6]=[CH:5][CH:4]=1.[CH:9]([C:11]1[CH:16]=[CH:15][CH:14]=[CH:13][N:12]=1)=[CH2:10]

Participants

6

Reactant 4

HCID 977OxygenHCID 7501StyreneHCID 75212-VinylpyridineHCID 8028Tetrahydrofuran

Product 1

HCID 21902692Poly(2-vinyl pyridine)-b-polystyrene-b-poly(2-vinyl pyridine)

Reagents, catalysts & solvents 1

HCID 887MethanolSolvent

Procedure

20 g of the copolymer of EPT-B was placed in a sealed flask and was suspended by the addition of 8.9 g of dried styrene (St), 0.9 g of dried vinylpyridine (referred to as VPy) and 80 ml of THF. 1.1 ml of dried oxygen was blown through to initiate the reaction, followed by stirring at room temperature for 30 hr. 100 ml of methanol was added to terminate the reaction. The precipitated polymer was extracted with acetone and heptane by the Soxhelt extractor in a nitrogen atmosphere over a period of 24 hr to obtain an insoluble diblock copolymer of EPT-O-(styrene/vinylpyridine copolymer) (referred to as EPT-O-P(St/VPy)).

Workup

  1. customthe reaction
  2. customto terminate
  3. customthe reaction
  4. extractionThe precipitated polymer was extracted with acetone and heptane by the Soxhelt extractor in a nitrogen atmosphere over a period of 24 hr

Sources & evidence

ORD record
ord-ac745eb5f6c24201a6872dc8ac4d4189
Source dataset
uspto-grants-2007_01
Patent number
US07160949B2

Reaction notes

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