Formaldehyde → Melamine formaldehyde

HRID 974156Notes

Reaction equation

HRID 974156 reaction equation
[N:1]1[C:8]([NH2:9])=[N:7][C:5]([NH2:6])=[N:4][C:2]=1[NH2:3].[CH2:10]=[O:11].[OH-].[Na+]>O>[CH2:10]=[O:11].[N:1]1[C:8]([NH2:9])=[N:7][C:5]([NH2:6])=[N:4][C:2]=1[NH2:3]

Participants

5

Reactant 3

HCID 712FormaldehydeHCID 7955MelamineHCID 14798Sodium Hydroxide

Product 1

HCID 93374Melamine formaldehyde

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Procedure

Separately from the above operation, 11 parts of melamine, 21.2 parts of a 37% formaldehyde solution and 28.2 parts of water were mixed and the mixture was adjusted to pH 9 with sodium hydroxide and dissolved by heating to obtain an aqueous solution of melamine-formaldehyde precondensate. This was added to said emulsifier solution and the mixture was stirred at 70° C. for 2 hours to effectuate the reaction.

Workup

  1. dissolutiondissolved
  2. temperatureby heating

Sources & evidence

ORD record
ord-61ec8789560e45e484b6d000abfa0b58
Source dataset
uspto-grants-1991_11
Patent number
US05068067

Reaction notes

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