Formaldehyde → Melamine formaldehyde
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
Product 1
Reagents, catalysts & solvents 1
Conditions
- Temperature
- 70 °C
Procedure
A mixture of 630 g of melamine and 1620 g of an aqueous 37 % solution of formaldehyde (hereinafter referred to as formalin) adjusted to pH of 9.0 by addition of an aqueous 2 % solution of sodium hydroxide was heated to 70° C., and after the dissolution of melamine into formalin, 2250 g of water were added to the mixture and the whole mixture was stirred for 3 min to obtain an aqueous solution of melamine-formaldehyde prepolymer.
Workup
- additionwere added to the mixture
Sources & evidence
- ORD record
- ord-1070323185854030bb12089d415590bb
- Source dataset
- uspto-grants-1989_04
- Patent number
- US04822767
Reaction notes
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