Patent · US Expired

Elasthane fibers stabilized against environmental influences

US4877825A · kind A · utility

1Cited by

6References

9Claims

0Family size

Assignee

BAYER HEALTHCARE LLC · DE

Inventors

Michael Kausch · Neunburg vorm Wald, DE
Hans-Josef Buysch · Krefeld, DE
Hans Schroer · Dormagen, DE
Carlhans Suling · Odenthal, DE

Key dates

Filing date	Mar 10, 1989
Grant date	Oct 31, 1989
Priority date	—
Expiry date	Mar 10, 2009

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08K5/527
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

The invention relates to elasthane fibers which are protected against harmful environmental influences, particularly sunlight and combustion gases, by a synergistic stabilizer combination of PA0 (a) highly alkylated, phenolic antioxidants corresponding to the following formula ##STR1## in which R.sup.1, R.sup.2 and R.sup.3 are C.sub.1 -C.sub.3 alkyl radicals, in addition to which R.sup.3 may be C.sub.4 -C.sub.6 alkyl radicals and PA0 (b) oligomeric, (cyclo)aliphatic phosphorous acid esters (oligomeric phosphites) obtained by reaction of pentaerythritol, perhydrobisphenol A and, optionally, a mono- alcohol with monomeric trialkyl or triaryl phosphites.

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