Explosives comprising modified copolymers of polyisobutylene, vinyl esters and maleic anhydride as emulsifiers

US6527885B2 · kind B2 · utility

Assignee

• Clariant Corporation · DE

Inventors

• Peter Klug · Großostheim, DE
• Ralf Bender · Oberursel, DE

Key dates

• Filing date: Jan 26, 2001
• Grant date: Mar 4, 2003
• Expiry date: Aug 19, 2021

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F8/30
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

The invention provides an explosive composition comprisingA) an oxygen-donating constituent, which forms a disperse phase,B) an organic constituent, which forms a dispersion phase, andC) at least one emulsifier,wherein the emulsifier includes a copolymer comprising, in random or regular order, structural units derived froma) maleic anhydride,b) one or more olefins having more than 40 carbon atoms, andc) a vinyl ester of carboxylic acids having from 2 to 12 carbon atoms,where the structural units derived from maleic anhydride have been modified by reaction with alcohols, amino alcohols, ammonia or amines.