Patent · US Expired

Manufacture of homogeneous ethylene/tert-butyl acrylate/acrylic acid terpolymers

US4122248A · kind A · utility

14Cited by

2References

1Claims

0Family size

Assignee

BASF SE

Inventors

Klaus Pfleger · Wesseling, DE
Klaus Boettcher
Wieland Zacher
Dirk Juza · Wesseling, DE

Key dates

Filing date	Nov 1, 1976
Grant date	Oct 24, 1978
Priority date	—
Expiry date	Nov 1, 1996

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10S526/914
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

A process for the manufacture of copolymers of ethylene with tert-butyl acrylate and acrylic acid at from 200.degree. to 350.degree. C under pressures above 800 atmospheres using mean residence times of up to at most 100 seconds, in which the reaction mixture obtained from the polymerization is kept for from 2 to 10 minutes at from 200.degree. to 250.degree. C under a pressure of not more than 500 atmospheres. Terpolymers are obtained which may be used as hot-melt adhesives in the form of thin and extremely homogeneous films.

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