Reaction equation
CCN(C1C=CC2C3(C4C=C(Cl)C=CC=4OC=2C=1)O[C:19](=[O:20])C1C3=CC=CC=1)CC.[OH-].[Na+].[N:32]1[C:39]([NH2:40])=[N:38][C:36]([NH2:37])=[N:35][C:33]=1[NH2:34].C=O>O>[CH2:19]=[O:20].[N:32]1[C:39]([NH2:40])=[N:38][C:36]([NH2:37])=[N:35][C:33]=1[NH2:34]Participants
Reactant 4
Product 1
Reagents, catalysts & solvents 1
Conditions
- Temperature
- 60 °C
Procedure
80 Parts of NISSEKI HIGHSOL N-296 (trademark for oil manufactured by Nihon Sekiyu Kagaku Co.) in which 4.0 parts of 3-diethylamino-7-chlorofluoran was emulsified in 100 parts of a 5% aqueous solution of pH 4.0 in which styrene-maleic anhydride copolymer was dissolved together with a small amount of sodium hydroxide. Separately, 10 parts of melamine, 25 parts of 37% aqueous formalin solution and 60 parts of water were adjusted to pH of 9.0 and heated to 60° C. to obtain a transparent melamine-formaldehyde precondensate in 15 minutes. This precondensate was added to the emulsion obtained above and this was stirred for 4 hours with keeping it at 60° C. and then was left to cool to room temperature. The resulting microcapsule dispersion had a solid concentration of 40%.
Sources & evidence
- ORD record
- ord-2d62d87e8d3742cca6ffcb3d13cd6f38
- Source dataset
- uspto-grants-1994_05
- Patent number
- US05308824
Linked notes
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