Continuous process for grafting a polyolefin, the grafted polyolefins obtained by means of this process

US5650468A · kind A · utility

Assignee

• SOLVAY (Société Anonyme) · BE

Inventors

• Eric Vandevijver · Woluwe-Saint-Lambert - Sint-Lambrechts-Woluwe, BE
• Pascal Lefevre · Chauny, FR
• Eric Fassiau · Brussels, BE
• Claude Vogels · Lasne, BE

Key dates

• Filing date: Dec 22, 1994
• Grant date: Jul 22, 1997
• Expiry date: Dec 22, 2014

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F255/08
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Continuous process for grafting a polyolefin within a melt including a polyolefin of linear olefin containing from 2 to 8 carbon atoms, a graftable functional monomer and a radical-generator, in an extruder including at its exit a compression zone followed by a discharge zone, in which at least one antioxidant additive is introduced into the melt not later than before the latter enters the compression zone of the extruder. Stabilized grafted polyolefin obtained by means of this process.