Patent · US Active

Use of polymer powder containing UV absorber for the stabilisation of polymers against the effects of UV radiation

US8461235B2 · kind B2 · utility

0Cited by

8References

8Claims

0Family size

Assignee

BASF SE

Inventors

Rainer Dyllick-Brenzinger · Speyer, DE
Oliver Koch · Eppelheim, DE
Dirk Wulff · Schifferstadt, DE
Alban Glaser · Mannheim, DE

Key dates

Filing date	Apr 7, 2010
Grant date	Jun 11, 2013
Priority date	—
Expiry date	Feb 24, 2031

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08K5/005
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

The present invention relates to the use, for stabilizing polymers, in particular polyolefins, with respect to exposure to UV radiation, of fine-particle polymer powders comprising at least one UV absorber. The present invention further relates to stabilizer mixtures for stabilizing polymers with respect to exposure to UV radiation, oxygen and heat, which, inter alia, comprise these polymer powders, and to a process for stabilizing polymers, in particular polyolefins, with respect to exposure to UV radiation, oxygen and heat, which comprises adding, to the polymers, in particular to the polyolefins, an effective amount of these stabilizers. The present invention further relates to polymers, in particular polyolefins, which have been stabilized with respect to exposure to UV radiation or with respect to exposure to UV radiation, oxygen and heat, which comprise an effective amount of these polymer powders or, respectively, stabilizer mixtures, and to articles produced from these stabilized polymers, in particular polyolefins.

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