Formic Acid → Melamine formaldehyde

HRID 1729007Notes

Reaction equation

HRID 1729007 reaction equation
[N:1]1[C:8]([NH2:9])=[N:7][C:5]([NH2:6])=[N:4][C:2]=1[NH2:3].C=O.[CH:12](O)=[O:13].[OH-].[Na+]>CO>[N:1]1[C:8]([NH2:9])=[N:7][C:5]([NH2:6])=[N:4][C:2]=1[NH2:3].[CH2:12]=[O:13]

Participants

6

Reactant 4

HCID 284Formic AcidHCID 712Formaldehyde2×HCID 7955MelamineHCID 14798Sodium Hydroxide

Product 1

HCID 93374Melamine formaldehyde

Reagents, catalysts & solvents 1

HCID 887MethanolSolvent

Procedure

126 g (1 mole) of melamine were methylolated in the presence of 270 g (9 moles) of formaldehyde at a pH of 8.5 and at from 40° to 70°C. The resulting adduct was brought to a pH of 4 with formic acid and etherified at 60° C. with 900 g of methanol in the course of 15 minutes. After neutralization with sodium hydroxide solution, the reactionsolution was freed from the unconverted formaldehyde and the excess methanol by evaporation (distillation).

Workup

  1. customthe excess methanol by evaporation (distillation)

Sources & evidence

ORD record
ord-f189a9bb7b894e53b91307586e348961
Source dataset
uspto-grants-1994_07
Patent number
US05330846

Reaction notes

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