Formaldehyde → Urea, polymer with formaldehyde and 1,3,5-triazine-2,4,6-triamine

HRID 651956

Reaction equation

HRID 651956 reaction equation
C=O.[OH-].[Na+].[N:5]1[C:12]([NH2:13])=[N:11][C:9]([NH2:10])=[N:8][C:6]=1[NH2:7].[NH2:14][C:15]([NH2:17])=[O:16]>O>[CH2:15]=[O:16].[NH2:14][C:15]([NH2:17])=[O:16].[N:5]1[C:12]([NH2:13])=[N:11][C:9]([NH2:10])=[N:8][C:6]=1[NH2:7]

Participants

6

Reactant 4

HCID 712FormaldehydeHCID 1176UreaHCID 7955MelamineHCID 14798Sodium Hydroxide

Product 1

HCID 168250Urea, polymer with formaldehyde and 1,3,5-triazine-2,4,6-triamine

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Procedure

To 56.9 g of a 37% aqueous solution of formaldehyde (formalin) adjusted to the pH of 8.6 by a 5% aqueous solution of sodium hydroxide, 22.6 g of melamine and 20.5 g of urea were added, mixed and dissolved at 50° C. with stirring, and water was added. After one hour, melamine-urea-formaldehyde prepolymer was obtained by cooling.

Workup

  1. additionwere added
  2. additionmixed
  3. dissolutiondissolved at 50° C.

Sources & evidence

ORD record
ord-a3a59ac9771142dc8c6261ef9a248965
Source dataset
uspto-grants-1987_06
Patent number
US04670344

Linked notes

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