Benzene sulfonic acid catalyzed aromatic Mannich products from alkyl phenols

US4425249A · kind A · utility

Assignee

• Standard Oil Company (Indiana) · US

Inventors

• Paul J. Cahill · Wheaton, US
• Edmund J. Piasek, deceased · Chicago, US
• by Evelyn W. Hunt, administratrix · Hoffman Estates, US

Key dates

• Filing date: Jun 28, 1979
• Grant date: Jan 10, 1984
• Expiry date: Jun 28, 1999

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C10N2040/28
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

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.