1,3-Butadiene → 1,3-Butadiene

HRID 1757483Notes

Reaction equation

HRID 1757483 reaction equation
O1[CH2:5][CH2:4][CH2:3][CH2:2]1.[CH2:6]=[CH:7][CH:8]=[CH2:9]>C1CCCCC1>[CH2:2]=[CH:3][CH:4]=[CH2:5].[CH2:6]=[CH:7][CH:8]=[CH2:9].[CH:3]([CH:4]=[CH:5][CH:6]=[CH2:7])=[CH2:2]

Participants

5

Reactant 2

HCID 78451,3-ButadieneHCID 8028Tetrahydrofuran

Product 2

HCID 78451,3-ButadieneHCID 86748943HCID 86748943, compound

Reagents, catalysts & solvents 1

HCID 8078CyclohexaneSolvent

Procedure

Butadiene was polymerized in a cyclohexane solvent with a polymerization catalyst of lithium n-butyl. Then, tetrahydrofuran was added as a vinylization agent, to polymerize butadiene, to obtain a butadiene-vinyl butadiene copolymer. The copolymer had a degree of vinylization of vinyl butadiene part of 60%. The polymer was hydrogenated to give a hydrogenatedblock copolymer having a hydrogenation ratio of 98%. This polymer was namedR-5.

Sources & evidence

ORD record
ord-ce83e16a659043f993d256b71fe55911
Source dataset
uspto-grants-1995_08
Patent number
US05446092

Reaction notes

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