Formaldehyde → Melamine formaldehyde

HRID 2291219Notes

Reaction equation

HRID 2291219 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 712Formaldehyde2×HCID 7955Melamine2×HCID 14798Sodium Hydroxide

Product 1

HCID 93374Melamine formaldehyde

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Conditions

Temperature
70 °C

Procedure

Six hundred and thirty grams of melamine and 1620 g of formalin (an aqueous 37% solution of formaldehyde) adjusted to pH of 9.0 by an aqueous 2% solution of sodium hydroxide were mixed, and the thus obtained mixture was heated to 70° C. Just after the dissolution of melamine, 2250 g of water were added to the thus obtained solution and the whole mixture was stirred for 3 min to obtain an aqueous solution of melamine-formaldehyde prepolymer.

Workup

  1. additionwere mixed
  2. additionwere added to the thus obtained solution

Sources & evidence

ORD record
ord-b355cdab65f848d681897fd30ac1900b
Source dataset
uspto-grants-1989_01
Patent number
US04795493

Reaction notes

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