Isoprene → HCID 19842620, compound

HRID 1087872Notes

Reaction equation

HRID 1087872 reaction equation
[CH2:1]=[CH:2][C:3](=[CH2:5])[CH3:4].[CH2:6]=[CH:7][C:8]1[CH:13]=[CH:12][CH:11]=[CH:10][CH:9]=1>>[CH2:6]=[CH:7][C:8]1[CH:13]=[CH:12][CH:11]=[CH:10][CH:9]=1.[CH2:1]=[CH:2][C:3](=[CH2:4])[CH3:5].[CH2:1]=[CH:2][C:3]1[CH:4]=[CH:8][CH:7]=[CH:6][CH:5]=1

Participants

3

Reactant 2

HCID 6557IsopreneHCID 7501Styrene

Product 1

HCID 19842620HCID 19842620, compound

Procedure

As analyzed by proton nuclear magnetic resonance spectroscopy (nmr), the SIS triblock elastomer contained 85.0 wt. % isoprene and 15.0 wt. % styrene. The microstructure of the polyisoprene centerblock was 10.0% 3,4-addition and 90.0% 1,4-addition. The weight average molecular weight, Mw, was 148,000 and the molecular weight distribution, Mw/Mn was 1.07 as determined by gel permeation chromatography (GPC). Properties of molded samples included a tensile strength at rupture of 2510 psi (17,300 KPa) and an ultimate elongation of 1280%.

Sources & evidence

ORD record
ord-2f6ba8f58a1141f0bdf4a27b69b1f93d
Source dataset
uspto-grants-1990_10
Patent number
US04960842

Reaction notes

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