Propylene copolymers grafted using free radical initiators

US5451639A · kind A · utility

Assignee

• BASF SE

Inventors

• Bernd Lothar Marczinke · Frankfurt, DE
• Juergen Kerth · Eisenberg (Pfalz), DE
• Patrik Mueller · Kaiserslautern, DE
• Horst Baumgartl · Ludwigshafen, DE
• Peter Ittemann · Lampertheim, DE

Key dates

• Filing date: Mar 11, 1994
• Grant date: Sep 19, 1995
• Expiry date: Mar 11, 2014

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C09J151/06
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

Propylene copolymers grafted with .alpha.,.beta.-ethylenically unsaturated carboxylic acids or carboxylic acid derivatives and consisting of PA1 a.sub.1) a random propylene copolymer (A.sub.1) containing from 0.1 to 15% by weight of polymerized C.sub.2 -C.sub.10 -alk-1-enes or of PA1 a.sub.2) a propylene copolymer (A.sub.2) comprising a random propylene copolymer (I) containing from 0.1 to 15% by weight of polymerized C.sub.2 -C.sub.10 -alk-1-enes and a random propylene copolymer (II) containing from 15 to 80% by weight of polymerized C.sub.2 -C.sub.10 -alk-1-enes or of PA1 a.sub.3) a propylene copolymer (A.sub.3) comprising a propylene homopolymer (III) and a random propylene copolymer (IV) containing from 15 to 80% by weight of polymerized C.sub.2 -C.sub.10 -alk-1-enes, are obtainable by reacting the monomer to be grafted with the propylene copolymer (A.sub.1), (A.sub.2) or (A.sub.3) at from 1 to 300 bar, from 0.01 to 1.0% by weight of the monomer to be grafted, where both stated concentrations are based on the propylene copolymer, being added to the molten propylene copolymer in the presence of from 0.005 to 0.5% by weight of a free radical initiator and the grafting reaction be…