Sulfuric Acid → Alpha.-Copper phthalocyanine

HRID 1198372Notes

Reaction equation

HRID 1198372 reaction equation
[CH:1]1[CH:6]=[C:5]2[C:7]3[N:22]=[C:21]([C:4]2=[CH:3][CH:2]=1)[N:20]=[C:19]1[C:23]2[C:28]([C:17](=[N:18]1)[N:16]=[C:15]1[C:29]4[C:34]([C:13](=[N:14]1)[N:12]=[C:11]1[C:35]5[C:40]([C:9](=[N:10]1)[N:8]=3)=[CH:39][CH:38]=[CH:37][CH:36]=5)=[CH:33][CH:32]=[CH:31][CH:30]=4)=[CH:27][CH:26]=[CH:25][CH:24]=2.[Cu:41].S(=O)(=O)(O)O>>[CH:25]1[CH:24]=[C:23]2[C:19]3[N-:18][C:17]([C:28]2=[CH:27][CH:26]=1)=[N:16][C:15]1=[N:14][C:13]([C:34]2[C:29]1=[CH:30][CH:31]=[CH:32][CH:33]=2)=[N:12][C:11]1[N-:10][C:9](=[C:40]2[C:35]=1[CH:36]=[CH:37][CH:38]=[CH:39]2)[N:8]=[C:7]1[C:5]2[C:4]([C:21](=[N:22]1)[N:20]=3)=[CH:3][CH:2]=[CH:1][CH:6]=2.[Cu:41]

Participants

3

Reactant 2

HCID 1118Sulfuric AcidHCID 475701Monastral Blue B2×

Product 1

HCID 499989Alpha.-Copper phthalocyanine

Procedure

100 Part of crude copper phthalocyanine was treated in 500 parts of a 98% sulfuric acid aqueous solution at room temperature for 2 hours, and filtered. The resultant solid was washed with water and dried to give an α-form crude copper phthalocyanine. Thereafter, the α-form crude copper phthalocyanine was treated in the same way as in Example 1 to give a β-copper phthalocyanine pigment.

Workup

  1. filtrationfiltered
  2. washThe resultant solid was washed with water
  3. customdried
  4. customto give an α-form crude copper phthalocyanine

Sources & evidence

ORD record
ord-d6453113482745a69ba3a0b2a6e27a55
Source dataset
uspto-grants-1994_01
Patent number
US05281268

Reaction notes

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