Formaldehyde → Phenol-Formaldehyde Urea

HRID 1357977Notes

Reaction equation

HRID 1357977 reaction equation
[C:1]1([OH:7])C=CC=CC=1.C=O.C=O.[C:12]1([OH:18])[CH:17]=[CH:16][CH:15]=[CH:14][CH:13]=1.[NH2:19][C:20]([NH2:22])=[O:21]>O>[CH2:1]=[O:7].[C:12]1([OH:18])[CH:17]=[CH:16][CH:15]=[CH:14][CH:13]=1.[NH2:19][C:20]([NH2:22])=[O:21]

Participants

6

Reactant 4

HCID 712Formaldehyde2×HCID 996Phenol2×HCID 1176UreaHCID 172281Formaldehyde;phenol

Product 1

HCID 21226462Phenol-Formaldehyde Urea

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Procedure

Phenol and formaldehyde in a phenol-formaldehyde molar ratio of 1:3.2 were reacted together to obtain a resole resin having about 1% free phenol and 7% free formaldehyde. Sufficient water was added to yield an aqueous resole resin solution mixture having about 51% solids content. Phenol-formaldehyde resin (6263 pounds), to which an aqueous solution of urea (3422 pound, 40% by weight of urea) was added, while the resulting solution was stirred to ensure homogeneous mixing. The temperature of the resulting solution was maintained from about 50° F. to about 70° F. (10° C. to about 21° C.). This premix solution had a density of about 9.69 lb/gallon and a solids content of about 47.1±2%.

Workup

  1. customto obtain a resole resin
  2. customto yield an aqueous resole resin solution mixture
  3. temperatureThe temperature of the resulting solution was maintained from about 50° F. to about 70° F. (10° C. to about 21° C.)

Sources & evidence

ORD record
ord-926fa4219ea84f64ae953c2129007709
Source dataset
uspto-grants-2003_07
Patent number
US06593420B1

Reaction notes

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