Low base number sulphonates
US5804094A · kind A · utility
5Cited by
3References
21Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 3, 1997 |
| Grant date | Sep 8, 1998 |
| Priority date | — |
| Expiry date | Sep 3, 2017 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10M2219/046
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Low base number (LBN) sulphonates derived from high molecular weight sulphonic acids have low viscosity, are chloride free and are not skin sensitisers. In their preparation, neutralisation of high molecular weight sulphonic acids or partially neutralised soaps of high molecular weight sulphonic acids is completed by the use of a high base number sulphonate in conjunction with a carboxylic acid. The process does not require the use of chloride containing promoters and produces low chloride products which do not skin on exposure to air.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.