POLYISOBUTYLBENZOL SULFONATE FOR LUBRICANTS AND FUELS
Patent Information
- Authority / Receiving Office
- DE · DE
- Patent Type
- Patents
- Current Assignee / Owner
- BASF SE
- Filing Date
- 2023-05-30
- Publication Date
- 2026-06-17
AI Technical Summary
Existing alkylbenzene sulfonates used in lubricants and fuels face challenges such as poor rheological behavior, high viscosity under operating conditions, low shear stability, and issues with solubility, storage stability, and precipitation, along with corrosion protection and formulability limitations.
A method involving the alkylation of benzene with terminal unsaturated polyisobutene, followed by sulfonation and neutralization to produce polyisobutyl benzene sulfonate, using specific catalysts and conditions to enhance the properties of the resulting lubricant and fuel additives.
The method produces polyisobutyl benzene sulfonate with improved rheological behavior, high viscosity index, low viscosity under operating conditions, and enhanced solubility, stability, and corrosion protection, addressing the limitations of existing alkylbenzene sulfonates.