Ammonia → Benzimidazol-2-one

HRID 479897Notes

Reaction equation

HRID 479897 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.C1C(N=NC2C(=O)N(C3C=CC(S([O-])(=O)=O)=CC=3)N=C2C([O-])=O)=CC=C(S([O-])(=O)=O)C=1.[Na+].[Na+].[Na+].N>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

5

Reactant 3

HCID 222AmmoniaHCID 43525Pigment Yellow 151HCID 164825Tartrazine

Product 1

HCID 162542Benzimidazol-2-one

Reagents, catalysts & solvents 1

HCID 962WaterSolvent4×

Procedure

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), 4 g of a commercially available dye C.I. acid yellow 23 and 110 g of deionized water were mixed, aqueous ammonia 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. 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 bleeding of the dye.

Workup

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

Sources & evidence

ORD record
ord-b33c872aa8884064be760c27d7029ce2
Source dataset
uspto-grants-2003_11
Patent number
US06648954B2

Reaction notes

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