Patent · US Expired

Preparation of copolymers of ethylene with acrylic esters

US5376739A · kind A · utility

17Cited by

1References

3Claims

0Family size

Assignee

BASF SE

Inventors

Klaus Pfleger · Wesseling, DE
Gerhard Arnold · Hanau, DE
Siegfried Schiller · Dresden, DE
Herbert Mueller · Herznach, CH

Key dates

Filing date	Jun 7, 1993
Grant date	Dec 27, 1994
Priority date	—
Expiry date	Jun 7, 2013

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08F210/02
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

A process for preparing copolymers of ethylene with acrylic esters by copolymerizing 100 parts by weight of ethylene with from 0.1 to 25.0 parts by weight of acrylic ester in a continuous tubular polymerization system at from 500 to 4000 bar and from 100.degree. to 400.degree. C. in the presence of free radical polymerization initiators, comprises controlling the temperature for the reaction mixture, comprising ethylene, the acrylic ester, the polymerization initiator and optionally a regulator, after entry into the reaction zone in such a way that the ratio dT/dt (temperature increase per unit time) is kept constant at a value within the range from 1.5.degree. to 2.5.degree. C. per second.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.