Polytetrahydrobenzoxazines and bistetrahydrobenzoxazines and use thereof as a fuel additive or lubricant additive

US9359570B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Arno Lange · Bad Dürkheim, DE
• Harald Boehnke · Mannheim, DE
• Wolfgang Grabarse · Mannheim, DE
• Hannah Maria Koenig · Mannheim, DE
• Markus Hansch · Speyer, DE
• Ludwig Voelkel · Schifferstadt, DE
• Ivette Garcia Castro · Ludwigshafen, DE

Key dates

• Filing date: Feb 11, 2015
• Grant date: Jun 7, 2016
• Expiry date: Feb 11, 2035

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C10N2020/04
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

Polytetrahydrobenzoxazines and bistetrahydrobenzoxazines, obtainable by (A) reacting at least one diamine of the formula H2N-A-NH2 with a C1- to C12-aldehyde and a C1- to C8-alkanol at 20 to 80° C. with elimination and removal of water, (B) reacting the condensation product from (A) with a phenol which bears a long-chain substituent at 30 to 120° C., and optionally (C) heating the reaction product from (B) to 125 to 280° C. The resulting polytetrahydrobenzoxazines and bistetrahydrobenzoxazines are suitable as fuel or lubricant additives, especially as detergent additives for diesel fuels.