Isoprene → Isoprene butadiene

HRID 444367

Reaktionsgleichung

Reaktionsgleichung von HRID 444367
[CH2:1]=[CH:2][CH:3]=[CH2:4].[CH2:5]=[CH:6][C:7](=[CH2:9])[CH3:8].C([Li])CCC>CCCCCCC>[CH2:1]=[CH:2][CH:3]=[CH2:4].[CH2:5]=[CH:6][C:7](=[CH2:8])[CH3:9]

Komponenten

5

Edukt 3

HCID 6557IsopreneHCID 78451,3-ButadieneHCID 178418339Butyllithium

Produkt 1

HCID 168288Isoprene butadiene

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 8900HeptaneLösungsmittel

Reaktionsbedingungen

Temperatur
50 °C

Versuchsvorschrift

In a reactor, a mixture of 57 g of 1,3-butadiene and 37 g of isoprene is added to a solution of 12.5 mmoles of butyllithium in 250 ml of n-heptane. The reaction mixture is stirred for 5 hours at 50° C., which results in a complete conversion of the monomers to a butadiene-isoprene copolymer having a butadiene content of 60% by weight and an average molecular weight by number of 5700.

Quellen und Nachweise

ORD-Eintrag
ord-daee73f20a3c41f9971fe910bad41998
Quelldatensatz
uspto-grants-1981_04
Patentnummer
US04264334

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