Formaldehyde → Resorcinol-formaldehyde resin

HRID 126966

Reaktionsgleichung

Reaktionsgleichung von HRID 126966
[C:1]1([CH:8]=[CH:7][CH:6]=[C:4]([OH:5])[CH:3]=1)[OH:2].[CH2:9]=[O:10].S([O-])([O-])(=O)=O.[Na+].[Na+]>O>[C:1]1([CH:8]=[CH:7][CH:6]=[C:4]([OH:5])[CH:3]=1)[OH:2].[CH2:9]=[O:10]

Komponenten

5

Edukt 3

HCID 712FormaldehydeHCID 5054ResorcinolHCID 24436Sodium Sulfate

Produkt 1

HCID 159980Resorcinol-formaldehyde resin

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 962WaterLösungsmittel

Versuchsvorschrift

Resorcinol, excess formaldehyde, and sodium sulphate were dissolved in water and heated with stirring on a water bath. As soon as the solution became cloudy, the reaction was terminated by the addition of a large volume of cold water. The precipitate was filtered off, washed with water, and dried at room temperature.

Aufarbeitung

  1. temperatureheated
  2. customthe reaction was terminated by the addition of a large volume of cold water
  3. filtrationThe precipitate was filtered off
  4. washwashed with water
  5. customdried at room temperature

Quellen und Nachweise

ORD-Eintrag
ord-cb22001293ca4c5793f6fe42a7fa05be
Quelldatensatz
uspto-grants-1981_03
Patentnummer
US04254244

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