Patent · US Expired

Polymers of olefinically unsaturated monomers

US6031057A · kind A · utility

6Cited by

2References

5Claims

0Family size

Assignee

BASF SE

Inventors

Ferdinand Lippert · Bad Dürkheim, DE
Arthur Hohn · Tauberbischofsheim, DE
Eckard Schauss · Heuchelheim, DE

Key dates

Filing date	Nov 20, 1997
Grant date	Feb 29, 2000
Priority date	—
Expiry date	Nov 20, 2017

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08F10/00
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

Polymers are obtained by polymerising olefinically unsaturated monomers in the presence of a metal complex having the general formula (I), in which the substituents and indexes have the following meanings: M is a metal of group VIIIB of the periodic table of elements; E.sup.1, E.sup.2 stand for an element of group VA of the periodic table of elements; Z is a bridging structural unit made of one, two or three substructural units of elements of groups IVA, VA, VIA of the periodic table of elements; R.sup.1 to R.sup.4 stand for substituents selected in the group that consists of C.sub.1 -C.sub.20 organic carbon residues and C.sub.3 -C.sub.30 organic silicium residues which may contain one or several elements of groups IVA, VA, VIA and VIIA of the periodic table of elements; L.sup.1, L.sup.2 stand for formally charged or neutral ligands; X stands for monovalent or polyvalent anions; p equals 0, 1 or 2; m, n equal 0, 1 or 2, whereas p=m.times.n. ##STR1##

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