Urea → Melamine cyanurate

HRID 2396565Notes

Reaction equation

HRID 2396565 reaction equation
NC(N)=O.[NH:5]1[C:12](=[O:13])[NH:11][C:9](=[O:10])[NH:8][C:6]1=[O:7].[N:14]1[C:21]([NH2:22])=[N:20][C:18]([NH2:19])=[N:17][C:15]=1[NH2:16]>>[C:15]1([NH2:16])[N:17]=[C:18]([NH2:19])[N:20]=[C:21]([NH2:22])[N:14]=1.[C:6]1([NH:8][C:9](=[O:10])[NH:11][C:12](=[O:13])[NH:5]1)=[O:7]

Participants

4

Reactant 3

HCID 1176UreaHCID 7955MelamineHCID 7956Cyanuric acid

Product 1

HCID 93198Melamine cyanurate

Procedure

The procedures of Example 4 were repeated except that 9 g of prilled urea (product of Mitsui Toatsu Chemicals, Inc.; melting point: 132° C.; average particle size: 1 mm) were reacted, in place of the cyanuric acid, with 4.5 g of the melamine at 300° C. As a result, melamine cyanurate was obtained in the form of a block. The yield and purity were 93% and 87.2%, respectively.

Sources & evidence

ORD record
ord-005c13b21e2547808f4d8dea30ab1284
Source dataset
uspto-grants-1996_02
Patent number
US05493023

Reaction notes

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