Flame retardancy

Scientific base for the development of halogen-free, polymeric flame retardants for engineering plastics

  • Flame retardancy needed in many applications in E&E and automotive industry
  • European regulations WEEE, RoHS and REACH support this research 



    • new phosphorus-containing polymers with systematically changed chemical structure to understand the influence of the chemical structure,
    • in-situ synthesis of nanocomposites



    • design of the contributions to gas phase action, condensed phase action and intumescence for different types of sample geometries
    • flame retardancy for biobased plastics



Example for flame-retardant additives for PBT:

PD Dr. rer. nat. habil. D. Pospiech

M.Sc. Hirak Satpathi, B.Sc. Madeleine Müller, Andreas Korwitz

In collaboration with: 
I. Kühnert (VP), U. Wagenknecht (VP), A. Leuteritz (VP); Leibniz-Institut für Polymerfoschung Dresden e.V., Germany
M. Döring and coworkers; Fraunhofer Institute for Structural Durability and System Reliability LBF, Darmstadt, Germany
B. Schartel and coworkers; BAM Federal Institute for Materials Research and Testing, Berlin, Germany
V. Altstädt and coworkers; University of Bayreuth, Bayreuth, Germany

Recent publications:
D. Pospiech, „Flexibility and performance of phosphorus FRs“ pinfa : Newsletter for non-halogen fire safety solutions N°. 34 Spe, 7 (2013)
T. Köppl, S. Brehme, D. Pospiech, O. Fischer,  V. Altstädt, B. Schartel, M. Döring, „Influence of polymeric flame retardants based on phosphorus containing polyesters on morphology and material characteristics of poly(butylene terephthalate) (PBT)“ J. Appl. Polym. Sci. 128, 3315-3324 (2013)
S. Brehme, T. Köppl, B. Schartel, O. Fischer, V. Altstsädt, D. Pospiech, M. Döring, „Phosphorus polyester – An alternative to low molecular weight flame retardants in poly(butylene terephthalate) (PBT) ?“ Macromol. Chem. Phys. 213, 22, 2386-2397 (2012)
O. Fischer, D. Pospiech, A. Korwitz, L. Häußler, C. Harnisch, Y. Bykov, M. Döring, „Decomposition of Polyesters influenced by Phosphorus-containing Substituents” PMSE Prepr., Am. Chem. Soc. San Diego, Ca, (2012)
D. Pospiech, L. Häußler, A. Korwitz, O. Fischer, S. Starke, D. Jehnichen, T. Köppl, V. Altstädt, The miscibility of poly(butylene terephthalate) (PBT) with phosphorus polyester flame retardants High Perform. Polym. 24, 1, 64-73 (2012)
O. Fischer, D. Pospiech, A. Korwitz, K. Sahre, L. Häußler, P. Friedel, D. Fischer, C. Harnisch, Y. Bykov, M. Döring, “Synthesis and properties of phosphorus-polyesters with systematically altered phosphorus environment” Polym. Degrad. Stab. 96, 2198-2208 (2011)
S. Brehme, B. Schartel, J. Goebbels, O. Fischer, D. Pospiech, Y. Bykov, M. Döring, „Phosphorus polyester versus aluminium phosphinate in poly(butylene terepthalate) (PBT): Flame retardancy performance and mechanisms“ Polym. Degrad. Stab. 96, 875-884 (2011)
R. Sablong, R. Duchateau, C.E. Koning, D. Pospiech*, A. Korwitz, H. Komber, S. Starke, L. Häußler, D. Jehnichen, M. Auf der Landwehr, „Incorporation of flame retardancy enhancing phosphorus-containing diol into poly(butylene terephthalate) via solid state polymerisation: A comparative study” Polym. Degrad. Stab. 96, 334-341 (2011)
A.I. Balabanovich, D. Pospiech, L. Häußler, C. Harnisch, M. Döring, „Pyrolysis behavior of phosphorus polyesters“ J. Anal. Appl. Pyrolysis 86, 99-107 (2009)
A. I. Balabanovich, D. Pospiech, A. Korwitz, L. Häußler, C. Harnisch, „Pyrolysis study of a phosphorus-containing aliphatic-aromatic polyester and its nanocomposites with layered silicates“ Polym. Degrad. Stab. 94, 355-364 (2009)
D. Pospiech, D. Jehnichen, H. Komber, A. Korwitz, A. Janke, T. Hoffmann, B. Kretschmar, U. Reuter, M. Döring, S. Seibold, R. Perez-Graterol, J. K. W. Sandler, V. Altstädt, F. Bellucci, G. Camino, “New polymers for tailor-made nanocomposites” J. Nanostruct. Polym. Nanocomp. (JNPN) 4/2, 62-75 (2008)