Bleaching method for sulfonic acid
US3997575A · kind A · utility
7Cited by
2References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 4, 1974 |
| Grant date | Dec 14, 1976 |
| Priority date | — |
| Expiry date | Nov 4, 1994 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C303/42
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A bleaching method for sulfonic acid, which comprises the process of bleaching sulfonic acid by adding (1) 0.5 - 20 parts by weight of primary or secondary aliphatic alcohol having 1 - 12 carbon atoms, (2) 0.5 - 10 parts by weight of a bleaching agent consisting of peroxide and (3) 0.1 - 10 parts by weight of water relative to 100 parts by weight of sulfonic acid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.