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]>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
4
Reactant 2
Product 1
Reagents, catalysts & solvents 1
Conditions
- Temperature
- 60 °C
Procedure
To 385 g of a distilled water were added 71.3 g of melamine and 118 g of formalin, and the resulting mixture was heated at 60° C. for 30 minutes under stirring to obtain a melamine-formalin precondensate. 77.1 g of the melamine-formalin precondensate was added to the above-obtained dispersion (Dispersion I), and the resulting mixture was again adjusted to pH 6.0 using a 20 % aqueous solution of phosphoric acid. The mixture was then heated at 60° C. for 90 minutes under stirring, to prepare a dispersion of microcapsules (Microcapsule-dispersion J), each microcapsule having a melamine-formaldehyde resin wall.
Sources & evidence
- ORD record
- ord-f91ee290c6e84c3883beb4b5bb5ef7bc
- Source dataset
- uspto-grants-1992_08
- Patent number
- US05141679
Reaction notes
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