Benzene sulfonic acid modified aromatic Mannich products from alkyl phenols
US4425245A · kind A · utility
8Cited by
4References
3Claims
0Family size
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Key dates
| Filing date | Sep 11, 1981 |
| Grant date | Jan 10, 1984 |
| Priority date | — |
| Expiry date | Sep 11, 2001 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2040/28
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A Mannich condensation reaction of an alkyl phenol, a formaldehyde-yielding reagent, an amine, and about 0.001 to 2.0 moles of an oil soluble benzene sulfonic acid per mole of amine.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.