Water-soluble azaphthalocyanines and their use as photoactivators in bleaching
US4657554A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 22, 1985 |
| Grant date | Apr 14, 1987 |
| Priority date | — |
| Expiry date | May 22, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W10/37
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Novel azaphthalocyanines are described which are of the formula ##STR1## in which Me is Al(III), Zn(II), Ge(IV) or Sn(IV), E is an anionic group, Z is a cation, Y is a halogen, n is any desired number from 1 to 3 and p is any desired number from 0 to 2, the sum n+p being at most 8 and A, B, C and D independently of one another completing a benzene ring or a ring of the formula ##STR2## at least one of the rings completed by A, B, C or D being one of the said heterocyclic rings. The novel compounds can be used as photoactivators, in particular for bleaching textiles and for controlling microorganisms in or on organic or inorganic substrates. Bleaching, washing and steeping agents and antimicrobially active agents are also described which contain the novel azaphthalocyanine compounds. The azaphthalocyanine pigments which arise as intermediates and which do not carry groups EZ imparting solubility in water, their preparation and their use as photosensitizers in non-aqueous or heterogeneous systems are likewise described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.