US20160060281A1 - Butadien2,3-diyl linked di-dopo derivatives
US20160060281A1 US14/888,561 US201414888561A US2016060281A1 US 20160060281 A1 US20160060281 A1 US 20160060281A1 US 201414888561 A US201414888561 A US 201414888561A US 2016060281 A
Butadien2,3-diyl linked di-dopo derivatives as flame retardants
BUTADIEN2,3-DIYL LINKED DI-DOPO DERIVATIVES AS FLAME RETARDANTS FIELD OF THE INVENTION The present invention relates to novel, halogen-free flame-retardants derived from...
(19) United States (12) Patent Application Publication (10
BUTADIEN2,3-DIYL LINKED DI-DOPO DERVATIVES AS FLAME RETARDANTS FIELD OF THE INVENTION 0001. The present invention relates to novel, halogen-free flame-retardants derived from 9,10-Dihydro-9-Oxa-10 Phosphaphenantrene-10-oxide (DOPO). This invention also relates to the use of the halogen free DOPO derived flame retardants in polymers.
Butadien2,3-diyl Linked Di-dopo Derivatives As Flame Retardants
U.S. patent application number 14/888561 was filed with the patent office on 2016-03-03 for butadien2,3-diyl linked di-dopo derivatives as flame retardants.The applicant listed for this patent is ALBEMARLE CORPORATION, SCOTT Edward ANGELL, Lu Li ANGLELL, Arthur MACK, Kimberly WHITE.
(12) INTERNATIONAL APPLICATION PUBLISHED UNDER World
(54) Title: BUTADIEN2,3-DIYL LINKED DI-DOPO DERIVATIVES A S FLAME RETARDANTS (57) Abstract: Disclosed are novel, halogen-free flame-retardants d e rived from 9,10-Dihydro-9-Oxa-10-Phosphaphenantrene-10-oxide (DOPO) o f the structure below: This invention also relates to the use of the halogen free DOPO derived compositions as flame-retardants in
- Are Dopo derivatives flame retardants?
- Despite a growing interest in DOPO derivatives as flame retardants there exist no comprehensive review, which summarizes in detail their synthesis and application in epoxy systems since 2011 (last decade) [, , , , , ].
- Are Dopo-based derivatives a flame retardant for epoxy resins?
- In summary, the DOPO-based derivatives enhanced the fire retarding performance of epoxy by gas phase-condensed phase flame-retardant mechanism. In conclusion, three kinds of DOPO-based derivatives with multiple phosphorous oxidation states were synthesized and applied as flame retardants for epoxy resins.
- Can Dopo and Organoclay be used as flame retardants?
- 27], have been used as flame retardants to modify epoxy resin for extensive application foreground. The mixture of DOPO and organoclay on EP was disclosed that it can contribute to reducing the decomposed products loss of DOPO, causing the synergic flame-retardant action of the gas barrier effects and condensed phase mechanism .
- What is a non-reactive Dopo based flame retardant?
- Non-reactive DOPO-based flame retardants have been widely used in aviation where a relatively lower loading is required to achieve improved fire behavior and allow a good compromise between flame retardancy and mechanical performances in epoxy systems , , , .
- Why are Dopo-based derivatives flame-retardant?
- The high flame-retardant efficiency of DOPO-based derivatives was ascribed to the synergism between the barrier effect in the condensed phase (proved by the high yield and stability of char residues) and the flame inhibition effect in the gaseous phase (proved by the decreased av-EHC values).
- Can a phenethyl-bridged Dopo derivative improve flame retardancy in DGEBA epoxy resin?
- Yan et al. combined the use of a phenethyl-bridged DOPO derivative (DiDOPO, Fig. 7) with multi-walled carbon nanotubes (MWNT) in DGEBA epoxy resin cured with 2-ethyl-4-methylimidazole (EMI-2,4) to improve its flame retardancy.
