Air initiation for detergent range pendant or internal olefin sulfitation
US4087457A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 22, 1976 |
| Grant date | May 2, 1978 |
| Priority date | — |
| Expiry date | Nov 22, 1996 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C303/20
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
Air initiation of pendant or internal olefin sulfitation at commercially useful rates and selectivities is achieved by stirring a mixture containing detergent range internal or pendant olefins, an alkali-metal or ammonium bisulfite, an alkali-metal or ammonium sulfite, an alkali-metal or ammonium alkane or alkylbenzene sulfonate surfactant, water, and an alcohol such as 1-propanol or 1-butanol, at ambient temperature and pressure while passing oxygen-containing gas through the mixture at a very slow rate. Bisulfite present must be in a mole ratio with respect to olefin of from 1 to 1-3 to 1 respectively, while sulfite must be present in a mole ratio to olefin of from 1 to 2-2 to 1. PH of the reaction mixture normally ranges from 5 to 6.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.