Formaldehyde → Formaldehyde;phenol
Reaction equation
[C:1]1([OH:7])[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1.[CH2:8]=[O:9].C(N(CC)CC)C>>[C:1]1([OH:7])[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1.[CH2:8]=[O:9]Participants
4
Procedure
2256 g (24 moles) of phenol, 2404 g (38.4 moles) of 40 wt. % formalin and 121.2 g (1.2 moles) of triethylamine were charged in a reactor provided with a reflux condenser and the mixture was allowed to react at 85° C. for two hours. Then, unreacted formalin was completely removed at that temperature under reduced pressure to obtain a resol having a solid concentration of 75 wt. %. The molecular weight of the resulting resol was measured by gel permeation method to reveal that it had 1-3 nuclei in average. The resol was used for the copolycondensation in following Preparation Examples 6 and 7.
Workup
- customprovided with a reflux condenser
- customto react at 85° C. for two hours
- customThen, unreacted formalin was completely removed at that temperature under reduced pressure
- customto obtain a resol
- customPreparation Examples 6 and 7
Sources & evidence
- ORD record
- ord-db128e90013d475c85ad1351e442ff2d
- Source dataset
- uspto-grants-1982_10
- Patent number
- US04355141
Reaction notes
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