Urea → Melamine cyanurate

HRID 1003136

Reaction equation

HRID 1003136 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 1176Urea3×HCID 7955MelamineHCID 7956Cyanuric acid2×

Product 1

HCID 93198Melamine cyanurate

Procedure

As the urea granules continued to roll a thin layer of the MDI-isocyanuric acid liquid was sprayed onto the urea, amounting to 40.0 grams. One minute time was allowed for the reaction of the MDI with the urea, and then polyol-melamine amounting to 40.0 grams was sprayed on top of the MDI-isocyanuric layer. The layers were allowed 1 minute at 95° C. to react. The melamine and isocyanuric acid reacted to form very fine particles of melamine cyanurate and the MDI and polyol reacted and polymerized to form very strong water insoluble polyurethane resin. The sprays of the MDI-isocyanuric acid, and the polyol-melamine layers were repeated until a total of 240.0 grams coatings were applied. After a final 2 minutes reaction time, the coated urea was cooled to ambient temperature and evaluated.

Workup

  1. customto react

Sources & evidence

ORD record
ord-10d26f1ffbe34b4fb3ec4cb27f04a2ea
Source dataset
uspto-grants-2000_04
Patent number
US06045810

Linked notes

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