Polyketone

Polyketones are a family of high-performance thermoplastic polymers. The polar ketone groups in the polymer backbone of these materials gives rise to a strong attraction between polymer chains, which increases the material's melting point (255 °C for copolymer (carbon monoxide ethylene), 220 °C for terpolymer (carbon monoxide, ethylene, propylene). Trade names include Poketone, Carilon, Karilon, Akrotek, and Schulaketon. Such materials also tend to resist solvents and have good mechanical properties. Unlike many other engineering plastics, aliphatic polyketones such as Shell Chemicals' Carilon are relatively easy to synthesize and can be derived from inexpensive monomers. Carilon is made with a palladium(II) catalyst from ethylene and carbon monoxide. A small fraction of the ethylene is generally replaced with propylene to reduce the melting point somewhat. Shell Chemical commercially launched Carilon thermoplastic polymer in the U.S. in 1996,[1] but discontinued it in 2000.[2] Hyosung announced that they would launch production in 2015.[3]

Industrially, the ethylene-carbon monoxide co-polymer is most significant. This polymer is synthesized either as a methanol slurry, or via a gas phase reaction with immobilized catalysts.[4][5]

  1. ^ "FindArticles.com | CBSi". findarticles.com. Retrieved 2021-05-24.
  2. ^ "Shell Carilon® DP P1000 Polyketone". www.matweb.com. Retrieved 2021-05-24.
  3. ^ Vink, David (15 September 2014). "Finding openings for polyketone compounds". PlasticsNewsEurope. Archived from the original on 18 May 2015. Retrieved 12 May 2015.
  4. ^ Drent, E.; Mul, W. P.; Smaardijk, A. A. (2001). "Polyketones". Encyclopedia Of Polymer Science and Technology. doi:10.1002/0471440264.pst273. ISBN 9781118633892.
  5. ^ Bianchini, C (2002). "Alternating copolymerization of carbon monoxide and olefins by single-site metal catalysis". Coord. Chem. Rev. 225 (1–2): 35–66. doi:10.1016/S0010-8545(01)00405-2.
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