Patent · US Expired

Manufacture of ethylene polymers in an autoclave reactor

US4074040A · kind A · utility

5Cited by

9References

2Claims

0Family size

Assignee

BASF SE

Inventors

Dieter Oeder · Bad Dürkheim, DE
Hans Gropper · Schifferstadt, DE
Friedrich Urban

Key dates

Filing date	Jan 10, 1977
Grant date	Feb 14, 1978
Priority date	—
Expiry date	Jan 10, 1997

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08F10/02
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

Ethylene polymers are manufactured by polymerizing ethylene under high pressure at high temperatures in an autoclave reactor. The heat of reaction generated by the polymerization is removed, within the reactor, by a cooling system in which the cooling medium is ethylene; the pressure of the monomer in the cooling system should differ by from 0 to 200 bars from the pressure prevailing in the polymerization system, and the temperature of the monomer on entering the cooling system is at least 40.degree. C. lower than the temperature prevailing in the autoclave. The process permits an increase in the conversion achieved in the polymerization reaction.

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