Dispersant viscosity modifiers based on diene-containing polymers

US7750089B2 · kind B2 · utility

Assignee

• The Lubrizol Corporation · US

Inventors

• Christopher J. Kolp · Euclid, US
• Matthew D. Gieselman · Wickliffe, US
• Renee A. Eveland · Powell, US
• Philip Pike · Greenville, US
• John K. Pudelski · Cleveland Heights, US
• Michael J. Covitch · Cleveland Heights, US
• Christopher L. Friend · Nottingham, GB

Key dates

• Filing date: Mar 8, 2005
• Grant date: Jul 6, 2010
• Expiry date: Feb 26, 2027

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C10N2030/02
• WIPO field: Basic materials chemistry
• WIPO sector: Chemistry

Abstract

A composition of the reaction product of (a) an isobutylene-diene copolymer having thereon groups containing carboxylic acid functionality or reactive equivalent thereof, derived from an α,β-unsaturated carboxylic compound; and (b) an amine component comprising at least one aromatic amine containing at least one N—H group capable of condensing with said carboxylic acid functionality, is a useful dispersant viscosity modifier.