Formaldehyde → Melamine formaldehyde

HRID 1248624Notes

Reaction equation

HRID 1248624 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].[OH-].[Na+]>O>[N:1]1[C:8]([NH2:9])=[N:7][C:5]([NH2:6])=[N:4][C:2]=1[NH2:3].[CH2:10]=[O:11]

Participants

5

Reactant 3

HCID 712FormaldehydeHCID 7955MelamineHCID 14798Sodium Hydroxide

Product 1

HCID 93374Melamine formaldehyde

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Conditions

Temperature
60 °C

Procedure

In the meantime, 10 parts of melamine, 25 parts of a 37% formaldehyde solution, 65 parts of water and a small quantity of sodium hydroxide were mixed and heated to 60° C. This solution became transparent in 15 minutes and a melamine-formalin precondensate was obtained. This precondensate was added to the emulsified solution and stirred continuously for 3 hours while maintaining the liquid temperature at 60° C. to complete the microcapsulation. The obtained microcapsules had an average particle size of 5 to 6 μm and the solids content of the microcapsule dispersion was about 45%.

Sources & evidence

ORD record
ord-c3a9ee56d0d74da781a461163996bc38
Source dataset
uspto-grants-1985_06
Patent number
US04525428

Reaction notes

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