Patent · US Expired

Chroman derivatives useful as stabilizers for polypropylene and .beta.-carotin

US4404304A · kind A · utility

6Cited by

0References

7Claims

0Family size

Assignee

BASF SE

Inventors

Michael Horner · Neustadt, DE
Dieter Horn · Heidelberg, DE
Erik Lueddecke · Mutterstadt, DE
Gernot Teege · Ludwigshafen, DE

Key dates

Filing date	Jan 28, 1982
Grant date	Sep 13, 1983
Priority date	—
Expiry date	Jan 28, 2002

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08K5/378
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

Novel chroman derivatives ##STR1## where R.sup.1, R.sup.2, R.sup.3, R.sup.4 and R.sup.5 are each H or C.sub.1 -C.sub.4 -alkyl, R.sup.6 and R.sup.7 are each H, C.sub.1 -C.sub.4 -alkyl or aryl, m is 1, 2 or 3, and R.sup.8 is alkyl or alkenyl of up to 30 carbon atoms, the preparation of these compounds, and their use as stabilizers for organic materials.

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