Styrene → Styrene-butadiene-styrene

HRID 489123Notes

Reaction equation

HRID 489123 reaction equation
[CH2:1]=[CH:2][C:3]1[CH:8]=[CH:7][CH:6]=[CH:5][CH:4]=1.[CH2:9]=[CH:10][CH:11]=[CH2:12].C([Li])(CC)C.CN(CCN(C)C)C>C1CCCCC1>[CH2:1]=[CH:2][C:3]1[CH:8]=[CH:7][CH:6]=[CH:5][CH:4]=1.[CH2:9]=[CH:10][CH:11]=[CH2:12].[CH2:1]=[CH:2][C:3]1[CH:8]=[CH:7][CH:6]=[CH:5][CH:4]=1

Participants

6

Reactant 4

HCID 7501Styrene2×HCID 78451,3-ButadieneHCID 8037N,N,N',N'-TetramethylethylenediamineHCID 178418400CID 53628100

Product 1

HCID 22280236Styrene-butadiene-styrene

Reagents, catalysts & solvents 1

HCID 8078CyclohexaneSolvent

Procedure

Styrene, butadiene and styrene were consecutively polymerized in a cyclohexane solvent in the presence of s-butyllithium and TMEDA in the same manner as in Referential Example 2, to give a styrene-butadiene-styrene block copolymer. The thus-obtained block copolymer was hydrogenated in the same manner as in Referential Example 2, to give a hydrogenated block Copolymer No. 3 (the hydrogenated block copolymer obtained in Referential Example 4 will be abbreviated as “Copolymer No. 3” hereinafter). Table 3 shows a styrene content, a number average molecular weight, a vinyl bond content and a hydrogenation ratio of the obtained Copolymer No. 3.

Sources & evidence

ORD record
ord-a10cc98e03f040569e844ddc88d0d4a4
Source dataset
uspto-grants-2005_12
Patent number
US06977105B1

Reaction notes

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