Reaktionsgleichung
[CH:1]1[CH:6]=[CH:5][C:4]([CH:7]([N:11]=C=O)N=C=[O:10])=[CH:3]C=1.[CH2:14](N)[CH:15]([NH2:17])[CH3:16].[C:19]([O:22]CC)(=[O:21])[CH3:20].C[C:26]([CH3:28])=[O:27]>O>[NH2:11][CH2:7][CH:4]([CH3:3])[CH2:5][C:6]([CH3:1])([CH3:19])[CH2:14][CH:15]([NH2:17])[CH3:16].[C:26]([OH:10])(=[O:27])[CH2:28][CH2:15][CH2:16][CH2:20][C:19]([OH:22])=[O:21]Komponenten
Edukt 4
Produkt 2
Reagenzien, Katalysatoren, Lösungsmittel 1
Versuchsvorschrift
206 g of a polyester from adipic acid and ethylene glycol having a molecular weight of 2060 are heated for 30 minutes to 110°C to remove any water dissolved therein. Subsequently 74 g of an allophanate diisocyanate mixture are added at 70°C. The diisocyanate mixture had previously been obtained by reacting ethoxylated n-butanol (molecular weight 2030) with toluylene diisocyanate at a molar ratio of 1:5 and has an NCO-content of 16,9 % by weight. Subsequent to the addition of the diisocyanate mixture the reaction system is heated for 1 hour to 110°C until the theoretical NCO-value of 1,5 % by weight is reached. The prepolymer obtained is dissolved in 800 ml of acetone. A solution of 1,15 g of 1,2-propylene diamine in 30 ml of water is added at 50°C. Thereafter a solution consisting of 16 g of an oligo amide obtained from 1-aminomethyl-5-amino-1,3,3-trimethylhexane and adipic acid in a molar ratio of 4:3, 16 g of ethyl acetate and 100 ml of acetone is added. The reaction mixture is allowed to react for 5 minutes at 50°C. Thereafter 400 ml of water are added and the acetone is distilled off under vacuo. An aqueous dispersion is obtained the solids of which contain 14,8 % by weight of ethylene oxide units. A film which is obtainable by pouring the dispersion on a glass plate and evaporating the water is smooth and elastic.
Aufarbeitung
- customThe prepolymer obtained
Quellen und Nachweise
- ORD-Eintrag
- ord-4c6ff756382b4d7ea79c18280bc3dcf5
- Quelldatensatz
- uspto-grants-1976_01
- Patentnummer
- US03935146
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