Process of preparation of novel mannich bases from hydrogenated and distilled cashew nut shell liquid (CNSL) for use as additive in liquid hydrocarbon fuels

US6797021B2 · kind B2 · utility

Assignee

• Indian Oil Corporation Limited · IN

Inventors

• Suresh Kumar Puri · Faridabad, IN
• Anurag Gupta · Clifton Park, US
• M. Rajesh · Faridabad, IN
• Rameshwar Prasad · Sidhauli, IN
• V. K. Sharma · Faridabad, IN
• M. Vanamamalai · Faridabad, IN
• Ved Ram Singh · Lucknow, IN
• A. K. Misra · Faridabad, IN
• Niranjan Raghunath Raje · New Delhi, IN
• Som Prakash Srivastava · Faridabad, IN
• Akhilesh Kumar Bhatnagar · Faridabad, IN

Key dates

• Filing date: Jul 6, 2001
• Grant date: Sep 28, 2004
• Expiry date: Sep 28, 2021

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C10L10/06
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

A process for the preparation of Mannich condensation products from hydrogenated and distilled Cashew Nut Shell Liquid, amines and aldehydes which provides improved detergency in the gasoline. Optionally, a polymeric dispersant, a non-volatile hydrocarbon carrier fluid and a solvent may be included for protecting and removing buildup of deposits on carburetor surfaces and intake valve system of a gasoline powered internal combustion engine