Phenol → Formaldehyde

HRID 1605805Notes

Reaction equation

HRID 1605805 reaction equation
C=O.[C:3]1([OH:9])[CH:8]=[CH:7][CH:6]=[CH:5][CH:4]=1.[C:10]1([OH:16])C=CC=CC=1.[OH-].[Na+]>>[CH2:3]=[O:9].[CH2:10]=[O:16].[C:3]1([OH:9])[CH:8]=[CH:7][CH:6]=[CH:5][CH:4]=1

Participants

5

Reactant 3

HCID 996Phenol3×HCID 14798Sodium Hydroxide2×HCID 172281Formaldehyde;phenol

Product 2

HCID 712FormaldehydeYield 55%HCID 172281Formaldehyde;phenol

Procedure

The phenol-formaldehyde resols useful as intermediates in this invention are prepared as follows: To a suitable reactor, there is charged a quantity of phenol, a catalytic amount of sodium hydroxide (0.5-5.0 grams) of 50% NaOH solution per mole of phenol; in the examples below 1.75 grams of caustic solution per mole of phenol is used, and 37 or 55 percent aqueous formaldehyde (in the amount to give the desired phenol-formaldehyde ratio). The mixture is heated for about 2 hours between 60°-70°C. The total reaction mixture which is an aqueous solution of resol may be used, without further treatment, to react with the resorcinol/resorcinol polymer mixture. If desired, the resol solution may be neutralized prior to reaction with the resorcinol polymer but preferably the solution is used as is.

Workup

  1. customare prepared

Sources & evidence

ORD record
ord-abe4ab404cd84125b5b91ea5a899ac53
Source dataset
uspto-grants-1976_04
Patent number
US03951723

Reaction notes

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