Ammonia → Melamine

HRID 1281636Notes

Reaction equation

HRID 1281636 reaction equation
B(O)(O)O.[N:5]1[C:12]([NH2:13])=[N:11][C:9]([NH2:10])=[N:8][C:6]=1[NH2:7].[NH3:14]>>[N:5]1[C:12]([NH2:13])=[N:11][C:9]([NH2:10])=[N:8][C:6]=1[NH2:7].[NH4+:14].[N:5]1[C:12]([NH2:13])=[N:11][C:9]([NH2:10])=[N:8][C:6]=1[NH2:7]

Participants

4

Reactant 2

HCID 222Ammonia2×HCID 10197992Orthoboric acid, compound with 1,3,5-triazine-2,4,6-triamine (1:1)2×

Product 2

HCID 7955MelamineHCID 21885095Ammonium melamine salt

Procedure

About 100 parts by weight of a commercial melamine borate powder are added to about 100 parts by weight of concentrated aqueous ammonia containing about 25% ammonia while agitating. The mixture is reacted for 12 hours at ambient temperature and pressure. The melamine borate is hydrolyzed into smaller molecules and the ammonia radical reacts with the oxyacid boron radicals thereby producing an ammonium melamine salt of polyboron oxyacid and polyammonium melamine salt of polyboron oxyacid. It is then dried and pulverized into a fine powder.

Workup

  1. customThe mixture is reacted for 12 hours at ambient temperature

Sources & evidence

ORD record
ord-f76a9942546f4f73a80f61751df7df90
Source dataset
uspto-grants-2002_09
Patent number
US06454968B1

Reaction notes

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