Formaldehyde → Phenol-Formaldehyde Urea

HRID 1357976Notes

Reaction equation

HRID 1357976 reaction equation
[C:1]1([OH:7])C=CC=CC=1.C=O.[C:10]1([OH:16])[CH:15]=[CH:14][CH:13]=[CH:12][CH:11]=1.C=O.[NH2:19][C:20]([NH2:22])=[O:21]>O>[CH2:1]=[O:7].[C:10]1([OH:16])[CH:15]=[CH:14][CH:13]=[CH:12][CH:11]=1.[NH2:19][C:20]([NH2:22])=[O:21]

Participants

6

Reactant 4

HCID 712FormaldehydeHCID 996PhenolHCID 1176Urea2×HCID 172281Formaldehyde;phenol2×

Product 1

HCID 21226462Phenol-Formaldehyde Urea

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Procedure

Phenol/formaldehyde premix T81 was made to have a phenol-formaldehyde molar ratio of 1:3, with about 4.5% free phenol and 1.8% free formaldehyde. Sufficient water was added to yield an aqueous resole resin solution mixture having about 45% solids content. An aqueous solution of urea (40% by weight of urea) was added T81 premix in a ratio of 9:1 T81 premix to urea solution (by weight), while the resulting solution was stirred to ensure homogeneous mixing.

Workup

  1. customto yield an aqueous resole resin solution mixture
  2. additionpremix in a ratio of 9:1 T81

Sources & evidence

ORD record
ord-06b6e4e5b39d42c0b42cac3e2d35a946
Source dataset
uspto-grants-2003_07
Patent number
US06593420B1

Reaction notes

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