Tin atom → Benzene, ethenyl-, polymer with 1,3-butadiene

HRID 1006198Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 1006198
[Sn].[C:2]([C:6]1[CH2:11][C:10](C(C)(C)C)(C)[CH:9]=[CH:8][C:7]=1O)(C)(C)[CH3:3]>CO>[CH2:3]=[CH:2][CH:6]=[CH2:7].[CH2:3]=[CH:2][C:6]1[CH:11]=[CH:10][CH:9]=[CH:8][CH:7]=1

Komponenten

4

Edukt 2

HCID 5352426Tin atomHCID 666433042,4-Di-t-butyl-4-methylphenol

Produkt 1

HCID 62697Benzene, ethenyl-, polymer with 1,3-butadiene

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 887MethanolLösungsmittel

Versuchsvorschrift

A 5-liter stainless steel autoclave is purged with nitrogen and then is charged with a mixture of 70 g of styrene, 2053 g of cyclohexane and 210 g of butadiene. Afterwards, the autoclave is heated in a water bath under stirring to reach a temperature of 50° C. and at that temperature, butyllithium is added to remove the impurities reactive to the initiator, followed by 8.4 mmol of the tin-containing organolithium initiator from Example 63. The reaction mixture is allowed to react for 2 hours and then 10 ml of methanol and 1.6 g of 2,4-di-tert.-butyl-4-methylphenol are added. The content of the autoclave is discharged, and coagulated with steam to remove the solvent and the regulator, then dried to a constant weight. GPC measurements show that the polymer obtained has a weight average molecular weight of 120,000, a number average molecular weight of 110,000, and a molecular weight distribution of 1.09.

Aufarbeitung

  1. customA 5-liter stainless steel autoclave is purged with nitrogen
  2. additionis charged with a mixture of 70 g of styrene, 2053 g of cyclohexane and 210 g of butadiene
  3. temperatureAfterwards, the autoclave is heated in a water bath
  4. customa temperature of 50° C.
  5. additionat that temperature, butyllithium is added
  6. customto remove the impurities
  7. customto react for 2 hours
  8. customto remove the solvent
  9. customthe regulator, then dried to a constant weight
  10. customobtained

Quellen und Nachweise

ORD-Eintrag
ord-63fecd6b933b43d3a12602567c2754ec
Quelldatensatz
uspto-grants-2004_09
Patentnummer
US06787661B2

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