Coloring agent and a composition including the same for coloring toilet bowl flushing water
US4218432A · kind A · utility
10Cited by
5References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 27, 1978 |
| Grant date | Aug 19, 1980 |
| Priority date | — |
| Expiry date | Jun 27, 1998 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC11D3/40
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A coloring agent which can be substantially completely decolored either through a treatment by a low concentration of chlorine type decoloring agents such as chlorine and hypochlorite or through a biological treatment usually employed in sewage treatments. The coloring agent is a certain group of polymethlyne compounds having at both the ends of the polymethyne chain pyrazolone structures. A composition comprising at least one of the coloring agents and additives in solution or solid form suitably used for coloring toilet bowl flushing water.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.