Water → alpha-Methyl styrene butadiene

HRID 1779880Notes

Reaction equation

HRID 1779880 reaction equation
[CH3:1][C:2]([C:4]1[CH:9]=[CH:8][CH:7]=[CH:6][CH:5]=1)=[CH2:3].[CH2:10]=[CH:11][CH:12]=[CH2:13].O>CCCCCC>[CH3:3][C:2]([C:4]1[CH:9]=[CH:8][CH:7]=[CH:6][CH:5]=1)=[CH2:1].[CH2:10]=[CH:11][CH:12]=[CH2:13]

Participants

5

Reactant 3

HCID 962WaterHCID 7407Alpha-Methylstyrene2×HCID 78451,3-Butadiene

Product 1

HCID 190273alpha-Methyl styrene butadiene

Reagents, catalysts & solvents 1

HCID 8058HexaneSolvent2×

Procedure

The copolymerization of α-methylstyrene and butadiene was carried out in a one-gallon batch reactor equipped with an air-driven stirrer, nitrogen lines, water-cooled coils, a rupture and dump tank as well as a solenoid controller to protect against temperature surges. The reactor has been previously conditioned for anionic polymerization (purged with dry nitrogen). To this reactor was added 38.5 ml of 0.909 g/ml α-methyl-styrene solution in hexane and 1800 grams of 17.5 percent Bd solution in hexane were added to give a 10/90 ratio of α-methyl styrene/butadiene. The initial concentration was determined by GC analysis to be 18.3 percent solids. The reactor contents were adjusted to the reaction temperature of 65° C. and were equilibrated.

Workup

  1. customequipped with an air-driven stirrer
  2. customThe reactor has been previously conditioned for anionic polymerization (purged with dry nitrogen)
  3. additionwere added

Sources & evidence

ORD record
ord-8022aae6e0db42f5a596371a165ef538
Source dataset
uspto-grants-1997_05
Patent number
US05629256

Reaction notes

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