Sodium Hydroxide → Benzimidazol-2-one

HRID 479900Notes

Reaction equation

HRID 479900 reaction equation
CC(C(N=NC1C(C(O)=O)=CC=CC=1)C(N[C:8]1[CH:13]=[CH:12][C:11]2[NH:14][C:15]([NH:17][C:10]=2[CH:9]=1)=[O:16])=O)=O.[OH-].[Na+]>O>[N:14]1[C:15](=[O:16])[N:17]=[C:10]2[CH:9]=[CH:8][CH:13]=[CH:12][C:11]=12

Participants

4

Reactant 2

HCID 14798Sodium HydroxideHCID 43525Pigment Yellow 151

Product 1

HCID 162542Benzimidazol-2-one

Reagents, catalysts & solvents 1

HCID 962WaterSolvent5×

Procedure

130 g of the aqueous dispersion of the pigment derivative (a) and 30 g of deionized water were mixed with 20 g of C.I. pigment yellow 151 having an average primary particle diameter of 80 nm (in which the content of metal ions having a valence of at least 2 was 270 ppm), a 1% sodium hydroxide aqueous solution was added so as to adjust the pH of a mixture liquid to 9.0, and the mixture liquid was dispersed with a paint shaker in the presence of zirconia beads as media for approximately 5 hours, to obtain a water-based pigment dispersion. In the water-based pigment dispersion, the neutralizatior rate of the sulfonic acid group of the pigment derivative (a) was 80%. Further, the obtained water-based pigment dispersion was diluted so as to have a concentration of 3% by weight, and the diluted water-based pigment dispersion was dropped to NO.2 filter paper, to show no bleedings.

Workup

  1. additionwas added so as
  2. additionwas diluted so as
  3. additionwas dropped to NO.2
  4. filtrationfilter paper

Sources & evidence

ORD record
ord-c0b9c2c4f48b4636bbb78d221610827e
Source dataset
uspto-grants-2003_11
Patent number
US06648954B2

Reaction notes

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