Ethylene propylene copolymer

from Wikipedia, the free encyclopedia
Structural formula
Structure of poly (ethylene-co-propylene)
General
Surname Ethylene propylene copolymer
other names
  • Poly (ethylene- co- propylene)
  • Polyethylene propylene
CAS number 9010-79-1
Monomers / partial structures
Type of polymer

Thermoplastic (copolymer)

Brief description

odorless white solid

properties
Physical state

firmly

density

0.9 g ml −1 at 25 ° C

solubility

almost insoluble in water

safety instructions
GHS labeling of hazardous substances
no GHS pictograms
H and P phrases H: no H-phrases
P: no P-phrases
As far as possible and customary, SI units are used. Unless otherwise noted, the data given apply to standard conditions .

Ethylene-propylene copolymer ( abbreviation E / P , formerly also EPM , also EPR from English ethylene-propylene rubber ) is a copolymer made from ethene and propene . Areas of application are, for example, hot melt adhesives and sealants .

Properties and manufacture

The copolymerization of ethylene increases the toughness of the polymer compared to pure polypropylene. Production can take place in a homogeneous phase using Ziegler-Natta catalysts or metallocene catalysts. The amount of ethylene used ranges from 40 to 80%.

The plastic can be processed with many additives and is relatively resistant to oxidizing agents. It is used as cable insulation. Among other things, its resistance to ozone (which occurs during partial discharges ) is important here.

Furthermore, functionalized olefins such as maleic anhydride or diolefins can be polymerized in to increase the functionality of the plastic. The diolefins can optionally allow crosslinking of the polymer.

Individual evidence

  1. ↑ a b Safety data sheet Formolene® Polypropylene Copolymer , accessed on July 9, 2019.
  2. ↑ a b c data sheet poly (ethylene-co-propylene) from Sigma-Aldrich , accessed on June 15, 2011 ( PDF ).
  3. ↑ Compendium of Polymer Terminology and Nomenclature , IUPAC Recommendations, RSC Publishing, Cambridge, 2008, pp. 403f.
  4. ↑ Morphology and toughness using the example of impact-modified polypropylene materials (PDF; 146 kB) sundoc.bibliothek.uni-halle.de. Retrieved December 6, 2009.
  5. ↑ Bernd Tieke, Makromolekulare Chemie , 3rd edition, Wiley-VCH, Weinheim, 2014, p. 173.