Manufacture of ethylene/n-butyl acrylate copolymers

US4087601A · kind A · utility

Assignee

• BASF SE

Inventors

• Klaus Pfleger · Wesseling, DE
• Wieland Zacher
• Klaus Boettcher
• Ronald Skorczyk · Bonn, DE
• Oskar Buechner · Dudenhofen, DE
• Franz G. Mietzner · Ludwigshafen, DE

Key dates

• Filing date: Apr 11, 1977
• Grant date: May 2, 1978
• Expiry date: Apr 11, 1997

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C08F210/12
• WIPO field: Macromolecular chemistry, polymers
• WIPO sector: Chemistry

Abstract

A process for the manufacture of copolymers of ethylene with n-butyl acrylate in a polymerization zone at pressures above 800 atmospheres and at from 150.degree. to 350.degree. C, wherein the reaction mixture obtained is transferred, via a cooling zone which is at a pressure below 500 atmospheres and at from 150.degree. to 250.degree. C, into the high pressure product isolation zone, the mean residence time of the reaction mixture in the two zones being from 2 to 10 minutes. A copolymer which gives good films is obtained.