Formaldehyde → Resorcinol-formaldehyde resin

HRID 127836

Reaktionsgleichung

Reaktionsgleichung von HRID 127836
[C:1]1([CH:8]=[CH:7][CH:6]=[C:4]([OH:5])[CH:3]=1)[OH:2].[CH2:9]=[O:10]>O>[C:1]1([CH:8]=[CH:7][CH:6]=[C:4]([OH:5])[CH:3]=1)[OH:2].[CH2:9]=[O:10]

Komponenten

4

Edukt 2

HCID 712FormaldehydeHCID 5054Resorcinol

Produkt 1

HCID 159980Resorcinol-formaldehyde resin

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 962WaterLösungsmittel

Versuchsvorschrift

Into a 500 ml flask are charged resorcinol (110 g, 1.0 mol) and 37% formalin (44.5 g), and the mixture is reacted at 70° C. for 5 hours. After the reaction, water is distilled off at 150° C. under reduced pressure (inner pressure: 25 mmHg) to give a resorcinol/formaldehyde resin having a softening point of 98° C. (Resin X).

Aufarbeitung

  1. customthe mixture is reacted at 70° C. for 5 hours
  2. distillationis distilled off at 150° C. under reduced pressure (inner pressure: 25 mmHg)

Quellen und Nachweise

ORD-Eintrag
ord-bd5b7fdfa81e4547860d529cfbdcef54
Quelldatensatz
uspto-grants-1981_03
Patentnummer
US04257926

Verknüpfte Notizen

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