Methanol → Vinyl acetate sodium ethylenesulfonate

HRID 1076947

Reaktionsgleichung

Reaktionsgleichung von HRID 1076947
CO.[C:3]([O:6][CH:7]=[CH2:8])(=[O:5])[CH3:4].[CH2:9]=[CH:10][S:11]([O-:14])(=[O:13])=[O:12].[Na+:15].CC(N=NC(C#N)(C)C)(C#N)C>O>[C:3]([O:6][CH:7]=[CH2:8])(=[O:5])[CH3:4].[CH2:9]=[CH:10][S:11]([O-:14])(=[O:13])=[O:12].[Na+:15]

Komponenten

6

Edukt 4

HCID 887MethanolHCID 6547AzobisisobutyronitrileHCID 7904Vinyl AcetateHCID 3270262Sodium vinylsulfonate

Produkt 1

HCID 131710246Vinyl acetate sodium ethylenesulfonate

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 962WaterLösungsmittel

Versuchsvorschrift

The same vessel as in Example 1 was charged with 130 g. of methanol, 25 g. of water, 320 g. of vinyl acetate, 15 g. of 30% aqueous solution of sodium ethylenesulfonate and 2.8 g. of azobisisobutylonitrile, and polymerization was carried out at a temperature of 70°C. for 3 hours. After adding 2.8 g. of 30% aqueous solution of sodiem ethylenesulfonate to the vessel, the polymerization was further continued for 5 hours to give vinyl acetate-sodium ethylenesulfonate copolymer containing 2.3% by mole of sodium ethylenesulfonate unit. Then the copolymer was hydrolyzed by a conventional method to give a modified PVA of which degree of hydrolysis was 92% by mole.

Aufarbeitung

  1. additionThe same vessel as in Example 1 was charged with 130 g
  2. additionAfter adding 2.8 g

Quellen und Nachweise

ORD-Eintrag
ord-f9187d3515574dbcb67370c707e80486
Quelldatensatz
uspto-grants-1976_05
Patentnummer
US03959205

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