Maro Publications



from 2/25/2013

Maro Encyclopedia


Patent Abstracts

Patent Titles




2. “Polyketone (PK) is a terpolymer derived from polymerization of monomers of carbon monoxide, ethylene, and propylene. The price of these raw materials is rather inexpensive and the cost for its polymerization process is relatively low, compared to other engineering plastics such as polyamide, polyester, polycarbonate or the like. Polyketone also has excellent heat resistance, chemical resistance, fuel permeation resistance, and abrasion resistance. Thus, due to its impact resistance, it may be applied to various industrial fields.

Polyketone may be blended with polyamide 6 (PA6) to improve its impact resistance, but the impact resistance is less effective when it is in a dry state as described in Korean Patent No. 10-2010-0065526. In contrast, in a moist state, it markedly enhances the impact resistance properties which are described in the Journal of Applied Polymer Science, Vol. 116 (2010), pp 3056-3069. It may, however, result in a decrease in impact resistance at sub-zero temperatures and dimensional instability of parts.”

(Polyketones, US Patent 2,378,023 (2/19/2013)

1. “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 Carilon). 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 1996, but discontinued it in 2000.[2] SRI International offers Carilon thermoplastic polymers.”  (Polyketones, Wikipedia, 2/25/2013)


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(RDC 6/5/2012)


Roger D. Corneliussen

Maro Polymer Links
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Copyright 2013 by Roger D. Corneliussen.
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* Date of latest addition; date of first entry is 2/25/2013.