4-Oxazolin-2-one → Isobutyraldehyde

HRID 1073654

Reaktionsgleichung

Reaktionsgleichung von HRID 1073654
C(O[CH2:5][CH2:6][CH2:7][O:8]C)(=O)C.N1CCCN[CH2:11]1.[O:16]1[CH:20]=[CH:19][NH:18]C1=O>O>[NH:18]([CH2:6][CH2:7][OH:8])[CH2:19][CH2:20][OH:16].[CH:7](=[O:8])[CH:6]([CH3:11])[CH3:5]

Komponenten

6

Edukt 3

HCID 1861144-Oxazolin-2-oneHCID 536841Npc129341HCID 15194871,3-Diazacyclohexane

Produkt 2

HCID 6561IsobutyraldehydeHCID 8113Diethanolamine

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 962WaterLösungsmittel

Versuchsvorschrift

216.7 g of Methoxypropyl acetate and 116.1 g of a polyisocyanate containing isocyanurate groups and based on hexamethylene diisocyanate, consisting mainly of N,N',N"-tris-(6-isocyanatohexyl)-isocyanurate, are introduced under a nitrogen atmosphere into a reaction vessel equipped with stirrer and cooling and heating means. A mixture of 29.9 g of hexahydropyrimidine B8 and 70.7 g of an oxazolone which has been obtained by the reaction of one equivalent of diethanolamine with one equivalent of isobutyraldehyde with elimination of water is then added dropwise at 50° C., the temperature rising to 70° C. Stirring is then continued for 10 hours. An approximately 50% solution of the cross-linking agent B13 containing the hexahydropyrimidine groups and oxazolane groups in a ratio of 1:2 is obtained.

Aufarbeitung

  1. additionare introduced under a nitrogen atmosphere into a reaction vessel
  2. customequipped with stirrer
  3. temperaturecooling
  4. temperatureheating means

Quellen und Nachweise

ORD-Eintrag
ord-698ececd93ff47e9967af70e06a528eb
Quelldatensatz
uspto-grants-1990_11
Patentnummer
US04970270

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