Flame retardant compositions comprising sterically hindered amines
US8349923B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Dec 12, 2008 |
| Grant date | Jan 8, 2013 |
| Priority date | — |
| Expiry date | Nov 1, 2029 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K2201/014
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention relates to a novel method of flame retarding a polymeric substrate by adding a small but efficient amount of a synergistic mixture of at least one sterically hindered N-alkoxyamine (NOR), at least a metal salt of hypophosphorous (phosphinic) acid and at least one organo-halogen flame retardant. A further aspect of the invention is the flame retardant composition itself and together with a polymer. The present invention also relates to polymeric articles (e.g. moldings, films, fibers, etc.) that are stabilized against light, heat and oxygen and made flame retardant by incorporation of at least one sterically hindered N-alkoxy amine, at least a metal salt of hypophosphorous acid (phosphinic acid) and at least one organo-halogen flame retardant.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.