Patent · US Active

Cyclic phosphines as flame retardants

US8519035B2 · kind B2 · utility

1Cited by

18References

9Claims

0Family size

Assignee

BASF SE

Inventors

Alexander Tishkov · Kashkhatau, RU
Gunter Scherhag · Heidelberg, DE
Klemens Massonne · Bad Dürkheim, DE
Matthias Maase · Speyer, DE
Calvin Emanuel · Houston, US
Larry D. Timberlake · West Lafayette, US
Mark V. Hanson · West Lafayette, US

Key dates

Filing date	Sep 3, 2008
Grant date	Aug 27, 2013
Priority date	—
Expiry date	Sep 1, 2029

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC08L101/00
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

The present invention is related to the use of specific cyclic and/or polymeric aryl-phosphines as flame retardants and to a method for reducing the flammability of organic material by incorporating into the material these specific cyclic and/or polymeric phosphines. Moreover, the invention is related to a polymeric composition containing a polymeric material and at least one of the specific cyclic and/or polymeric phosphines in an amount of from 1 to 15% by weight, based on the weight of the polymeric material. The invention also relates to a composition comprising at least one of the specific cyclic and/or polymeric phosphines and at least one polymerizable monomer.

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