Phenol → Formaldehyde

HRID 393354Notes

Reaction equation

HRID 393354 reaction equation
[C:1]1([OH:7])[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1>O>[CH2:1]=[O:7].[C:1]1([OH:7])[CH:6]=[CH:5][CH:4]=[CH:3][CH:2]=1

Participants

4

Reactant 1

HCID 996Phenol3×

Product 2

HCID 712FormaldehydeHCID 996Phenol

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Procedure

The process of this invention relates to the preparation of a water-soluble phenol-formaldehyde resole resin. A base-catalyzed condensation of the phenol and the aldehyde is typically used to prepare the resin. The reaction, which is exothermic, is initiated after mixing the phenol and the aldehyde by addition of the catalyst. The proportion of phenol to the aldehyde is selected to yield a resole-type resin (stoichiometric excess of formaldehyde) when formaldehyde and phenol are used, the mole ratio of formaldehyde to phenol preferably being from about 2.5:1 to 4.2:1, and more preferably from about 3.2:1 to 4.0:1. Preferably, an aqueous mixture of formaldehyde and phenol is maintained at a first temperature of from about 40° C. to 50° C. as a basic polymerization catalyst is added.

Workup

  1. customto prepare the resin
  2. customThe reaction, which

Sources & evidence

ORD record
ord-a6170fb3973042518e9b266570984504
Source dataset
uspto-grants-2004_10
Patent number
US06806343B2

Reaction notes

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