Propylene graft copolymers

US5461113A · kind A · utility

Assignee

• BASF SE

Inventors

• Bernd Lothar Marczinke · Frankfurt, DE
• Patrik Mueller · Kaiserslautern, DE
• Juergen Kerth · Eisenberg (Pfalz), DE

Key dates

• Filing date: Mar 11, 1994
• Grant date: Oct 24, 1995
• Expiry date: Mar 11, 2014

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F255/02
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Propylene copolymers grafted with .alpha.,.beta.-ethylenically unsaturated carboxylic acid or carboxylic acid derivatives and consisting of a random propylene copolymer (I) with from 0.1 to 15% by weight of polymerized C.sub.2 -C.sub.10 -alk-1-enes and a random propylene copolymer (II) with from 15 to 80% by weight of polymerized C.sub.2 -C.sub.10 -alk-1-enes, are obtainable by reacting the graft monomer with the propylene copolymer at from 1 to 300 bar, from 0.01 to 1.0% by weight, based on the propylene copolymer, of the graft monomer being mixed with the molten propylene copolymer in the absence of a free radical initiator, and the grafting reaction being carried out at from 200.degree. to 350.degree. C.