Magnesium low rate number sulphonates
US5922655A · kind A · utility
3Cited by
1References
10Claims
0Family size
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Inventors
Key dates
| Filing date | Sep 22, 1998 |
| Grant date | Jul 13, 1999 |
| Priority date | — |
| Expiry date | Sep 22, 2018 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10M159/24
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Magnesium low base number (LBN) sulphonates derived from high molecular weight sulphonic acids have low viscosity and are chloride free. The magnesium low base number sulphonates 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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.