Abstract
The synthesis of azoalkanes such as azocyclohexane (1) and 4,4′-bis(cyclohexylazocyclohexyl)methane (2) and their use as flame retardants in polymeric substrates is reported. For the first time it is demonstrated that azoalkanes alone can effectively provide flame retardancy and self-extinguishing properties to poly(propylene) films at a very low concentration of 0.25 to 0.5 wt.-%. All the poly(propylene) formulations passed DIN 4102-1/62 standards and the instant azoalkane-containing poly(propylene) blends show no discoloration.
Original language | English |
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Pages (from-to) | 976-981 |
Number of pages | 6 |
Journal | Macromolecular Rapid Communications |
Volume | 27 |
Issue number | 12 |
DOIs | |
Publication status | Published - 24 Jun 2006 |
MoE publication type | A1 Journal article-refereed |
Keywords
- additives
- azo compound
- flame retardance
- non-halogenated flame retardants
- poly(propylene) (PP)