Reaktionsgleichung
[C:1]1([CH:8]=[CH:7][CH:6]=[C:4]([OH:5])[CH:3]=1)[OH:2].C=O>>[CH2:1]=[O:2].[C:1]1([CH:8]=[CH:7][CH:6]=[C:4]([OH:5])[CH:3]=1)[OH:2]Komponenten
3
Versuchsvorschrift
In a four-necked flask equipped with a reflux condenser and a thermometer were placed 110 g (1.0 mole) of resorcin and 44.5 g (0.55 mole) of 37% formalin, and the resulting mixture was subjected to reaction at 70° C. for five hours. The reflux condenser was then replaced by a fractionator, and the pressure in the flask was reduced to 25 mmHg, after which the temperature was elevated to 150° C., at which temperature the contents of the flask were concentrated for three hours to obtain a resorcin formaldehyde resin [T].
Aufarbeitung
- customIn a four-necked flask equipped with a reflux condenser
- customthe resulting mixture was subjected to reaction at 70° C. for five hours
- customwas elevated to 150° C., at which temperature
- concentrationwere concentrated for three hours
Quellen und Nachweise
- ORD-Eintrag
- ord-fabe99119f714e16a297ecd700467720
- Quelldatensatz
- uspto-grants-1998_02
- Patentnummer
- US05717053
Verknüpfte Notizen
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