Tetra-sulfo iron-phthalocyanine and related methods
US8318005B2 · kind B2 · utility
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22References
18Claims
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Assignee
Inventors
Key dates
| Filing date | Dec 21, 2007 |
| Grant date | Nov 27, 2012 |
| Priority date | — |
| Expiry date | Nov 6, 2029 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10G2300/807
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The present invention relates to making tetra-sulfo iron-phthalocyanine by reacting sulfonated reactant(s) in the presence a boron-containing promoter. The present invention also relates to making tetra-sulfo iron phthalocyanine more tolerant to oxygen by combining the tetra-sulfo iron-phthalocyanine with a stabilizing amount of a complexing agent (e.g., a stabilizing amine) and/or contacting the tetra-sulfo iron-phthalocyanine with steam.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.