Treatment of optical brightening agents
US3962115A · kind A · utility
8Cited by
5References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 30, 1973 |
| Grant date | Jun 8, 1976 |
| Priority date | — |
| Expiry date | Oct 30, 1993 |
Classification
- Technology area (CPC D)Textiles; Paper
- CPC primaryD06L4/664
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A thixotropic slurry is prepared comprising a compound having the formula ##SPC1## Wherein X and Y may be the same or different and each represents a mono- or di-substituted amino or alkoxy group and M represents an alkali metal or hydrogen, by mixing the wet filter cake obtained during the preparation of this compound with a dispersing agent such that the resulting slurry has a Brookfield viscosity from 200 to 10,000 centipoises at 6 r.p.m. A detergent composition is prepared by adding the above obtained slurry to a detergent and mixing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.