Ammonia → Melamine formaldehyde

HRID 1493366Notes

Reaction equation

HRID 1493366 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].N>>[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

4

Reactant 3

HCID 222AmmoniaHCID 712FormaldehydeHCID 7955Melamine

Product 1

HCID 93374Melamine formaldehyde

Procedure

A melamine-formaldehyde based porous polymer was prepared by a two step method similar to Example 5. Melamine (63 g; 0.5 mol) was added to neutralised (pH 7-7.5) formalin (40% aq; 113 g; 1.5 mol). Ammonia solution (0.880; 1.3 ml) was added and the mixture stirred and heated to boiling. The resulting homogeneous solution was refluxed for 40 minutes, then concentrated under reduced pressure to give a clear, viscous syrup (70% solids). An aliquot of this syrup (12.2 g) was diluted with glycerol (2.3 g) and Miranol C2M-SF. CONC (1.5 g). Heptane 100 ml) was stirred in slowly to form a high internal phase emulsion. Phosphoric acid (50% aq; 1.0 g) was mixed in and the catalysed emulsion heated at 70° C. for an hour.

Workup

  1. temperatureheated to boiling
  2. temperatureThe resulting homogeneous solution was refluxed for 40 minutes
  3. concentrationconcentrated under reduced pressure

Sources & evidence

ORD record
ord-d5c3a9d359214929830f245701fd7fd1
Source dataset
uspto-grants-1991_06
Patent number
US05021462

Reaction notes

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