Formic Acid → Melamine formaldehyde

HRID 969241Notes

Reaction equation

HRID 969241 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>[CH2:12]=[O:13].[N:1]1[C:8]([NH2:9])=[N:7][C:5]([NH2:6])=[N:4][C:2]=1[NH2:3]

Participants

6

Reactant 4

HCID 284Formic AcidHCID 712FormaldehydeHCID 7955MelamineHCID 14798Sodium Hydroxide

Product 1

HCID 93374Melamine formaldehyde

Reagents, catalysts & solvents 1

HCID 887MethanolSolvent

Procedure

126 g of melamine were methylolated in the presence of 270 g of formaldehyde at a pH of 8.5 and at temperatures from 40 to 70° C. The resulting addition compound was adjusted to a pH of 4 using formic acid and was etherified with 900 g of methanol at temperatures of 60° C. for a period of 15 minutes. Following neutralization with sodium hydroxide solution the reaction solution was freed by concentration (distillation) from the unreacted formaldehyde and from the excess methanol.

Workup

  1. additionThe resulting addition compound
  2. concentrationwas freed by concentration (distillation) from the unreacted formaldehyde and from the excess methanol

Sources & evidence

ORD record
ord-c1256ecabf534b3c8fc57c93a2faf79e
Source dataset
uspto-grants-2007_12
Patent number
US07306842B2

Reaction notes

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