Formaldehyde → Melamine formaldehyde

HRID 1374504Notes

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

Participants

Reactant 2

HCID 712Formaldehyde

HCID 7955Melamine

Product 1

HCID 93374Melamine formaldehyde

Procedure

If it is desirable to form a second shell, an aqueous solution of melamine and formaldehyde or a precondensate is added to the above emulsion. The melamine-formaldehyde shell is formed by raising the temperature of the resulting mixture at neutral or acidic pH, e.g., pH of 7 or less. The temperature of encapsulation is maintained at about 20 to 95° C., preferably about 30 to 85° C., and more preferably about 45 to 80° C.

Workup

customto form a second shell

Sources & evidence

ORD record: ord-7f7a399cde2d4c6e8e3e956e2499e940
Source dataset: uspto-grants-2007_01
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US07166407B2

Reaction notes

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