Formaldehyde → Melamine formaldehyde

HRID 235562Notes

Reaction equation

HRID 235562 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>[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

5

Reactant 3

HCID 712FormaldehydeHCID 7955MelamineHCID 14798Sodium Hydroxide

Product 1

HCID 93374Melamine formaldehyde

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Procedure

Separately, 7 parts of melamine and 18 parts of 37% formalin were added to 30 parts of water. The mixture was adjusted to pH 9.0 with sodium hydroxide and heated for 15 min to obtain a melamine-formaldehyde precondensate. This precondensate was added to the above prepared emulsion. The mixture was kept at 60° C. for 2 hr and then at 85° C. for 1 hr, whereby color former microcapsules No. (1)-1 to (1)-4 were formed. Respective microcapsules had average particle diameters as shown in Table 1.

Workup

  1. temperatureheated for 15 min

Sources & evidence

ORD record
ord-f3e0758c672247e28f2f5bdb3be68460
Source dataset
uspto-grants-1987_02
Patent number
US04640714

Reaction notes

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