Melamine → Melamine cyanurate

HRID 465489

Reaction equation

HRID 465489 reaction equation
[N:1]1[C:8]([NH2:9])=[N:7][C:5]([NH2:6])=[N:4][C:2]=1[NH2:3].[NH:10]1[C:17](=[O:18])[NH:16][C:14](=[O:15])[NH:13][C:11]1=[O:12].O1CCCC1>O>[C:2]1([NH2:3])[N:4]=[C:5]([NH2:6])[N:7]=[C:8]([NH2:9])[N:1]=1.[C:11]1([NH:13][C:14](=[O:15])[NH:16][C:17](=[O:18])[NH:10]1)=[O:12]

Participants

5

Reactant 3

HCID 7955MelamineHCID 7956Cyanuric acidHCID 8028Tetrahydrofuran

Product 1

HCID 93198Melamine cyanurate

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Procedure

An amount 98.2 g of melamine, 100.6 g of isocyanuric acid (molar ratio 1:1) and 28.5 g of a polycarbonate were charged into a four-necked flask equipped with a condenser and a stirrer, further a solvent mixture comprising 2000 g of tetrahydrofuran and 222 g of water was added and then heating was initiated under stirring. After the temperature in the system reached 62° C. in about one hour, the mixture was aged at the same temperature for one hour and 20 minutes to complete the reaction. Subsequently, the solvent was filtered off, and the product was dried under reduced pressure at 50° C. for 5 hours, followed by pulverization to give a melamine-cyanuric acid adduct subjected to surface treatment.

Workup

  1. customequipped with a condenser and a stirrer
  2. additionwas added
  3. temperatureheating
  4. waitthe mixture was aged at the same temperature for one hour and 20 minutes
  5. customthe reaction
  6. filtrationSubsequently, the solvent was filtered off
  7. customthe product was dried under reduced pressure at 50° C. for 5 hours

Sources & evidence

ORD record
ord-e764efeac9f34f2a9b5c5621917e3718
Source dataset
uspto-grants-1992_10
Patent number
US05153247

Linked notes

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