Formaldehyde → Phenolic plastics,aniline modified

HRID 1701770Notes

Reaction equation

HRID 1701770 reaction equation
[C:1]1([OH:7])[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1.[NH2:8][C:9]1[CH:14]=[CH:13][CH:12]=[CH:11][CH:10]=1.C=O>O>[CH2:1]=[O:7].[C:1]1([OH:7])[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1.[NH2:8][C:9]1[CH:14]=[CH:13][CH:12]=[CH:11][CH:10]=1

Participants

5

Reactant 3

HCID 712Formaldehyde2×HCID 996PhenolHCID 6115Aniline

Product 1

HCID 168216Phenolic plastics,aniline modified

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Conditions

Temperature
90 °C

Procedure

A reactor is charged with a 50:50 wt. percent mixture of phenol and aniline at 50° C. and 15 psig nitrogen. The reactor is heated to 90° C. Formaldehyde is fed into the reactor in an amount of about 10 wt. percent of the phenolaldehyde mixture, while the reactor temperature is maintained at 90° C. After the formaldehyde has been fed into the reactor, the pressure is reduced to zero psig and the mixture is heated to 180° C. and held at that temperature for one hour, during which time a distillate of water of condensation is removed. The mixture is then maintained at 180° C. and 15 mm Hg for 6 hours, during which time a distillate of unreacted phenol and aniline is removed. The yield of PFAR product in the reactor is about 52 wt % of the initial reaction mixture.

Workup

  1. additionA reactor is charged with a 50
  2. temperatureis maintained at 90° C
  3. temperaturethe mixture is heated to 180° C.
  4. customis removed
  5. temperatureThe mixture is then maintained at 180° C.
  6. wait15 mm Hg for 6 hours
  7. customduring which time a distillate of unreacted phenol and aniline is removed
  8. customreaction mixture

Sources & evidence

ORD record
ord-f3c0b3fa219546feb06d02c0742521e6
Source dataset
uspto-grants-1980_03
Patent number
US04195151

Reaction notes

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