p-Toluenesulfonic acid → Formaldehyde
Reaction equation
O=[Si]=O.[C:4]1(C)[CH:9]=[CH:8][C:7](S(O)(=O)=O)=[CH:6][CH:5]=1.[O-2:15].[Mg+2]>>[C:4]1([OH:15])[CH:9]=[CH:8][CH:7]=[CH:6][CH:5]=1.[CH2:4]=[O:15]Participants
5
Procedure
100 parts by weight of quartz sand were mixed with 65% aqueous-alcohol solution of paratoluenesulphonic acid amounting to 1.2% by weight of the sand, and with phenol formaldehyde resin taken in an amount of 2% by weight of the sand and produced by condensing 1 mole of phenol and 1.2 moles of formaldehyde in the presence of magnesium oxide at a condensing temperature of 70°-75° C.
Sources & evidence
- ORD record
- ord-5fd52e5dff6a4f368026342b354e67ba
- Source dataset
- uspto-grants-1978_10
- Patent number
- US04119606
Reaction notes
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