Polyketone plastic

Carilon Shell Chemical s trade name for its semicrystalline aliphatic polyketone plastics. 

In addition to polyamide, lamination inks ordinarily contain modifiers such as polyketone resin, plasticizer, and wax to impart specific properties such as block resistance and increased bond strength. Because laminating inks are usually reverse-side printed and end-up sandwiched between films, gloss is not a primary requirement. Water-base laminating inks that will meet the U.S. EPA emission requirements and have the correct functional properties are currently under development. 

A number of plastics are condensation polymers and include polyesters and nylons that are not as highly oriented as the same materials but in fiber form. Other plastics have been developed that have outstanding heat stability, strength, and other properties that allow their wide use. These plastics include polycarbonates, polyimides, polybenzimidazoles, polysulfides, polyethers, polysulfones, and polyketones. 

Olefin-carbon monoxide co-polymers of the type (-RCH-CH2-CO-)n, known as polyketones, have a wide variety of interesting properties, such as thermoplasticity, flexibility, durability and high impact strength. The ketone function in the polymer makes them sensitive to UV radiation and as a consequence they are photodegradable and hence environmentally acceptable plastics. However their light sensitivity has limited their applications. They can be made by the copolymerisation of an alkene with carbon monoxide (Equation 27 see also Chapter 7, Section 7.7) ... 

The resulting polyketone, which has remarkable mechanical and thermal resistance, has been commercialized as a valuable engineering plastic, but general applications have so far been hindered by its sensitivity to photo-degradation. 

Polyketones (or chemically accurate polyaryl-etherketones (PAEK)) are a family of semicrystalline thermoplastics with high temperature stability and high mechanical strength. Some of the commercial plastics that fall within this family include those listed with their structures in Table 10.1. 

Plastics—Polyketone (PK) Moulding and Extrusion Materials. Part 1 Designation System and Basis for Specifications Plastics—Polyketone (PK) Moulding and Extrusion Materials. Part 2 Preparation of Test Specimens and Determination of Properties... 

Hufenbach and co-workers [10] and researchers at LNP Engineering Plastics [11] have discussed the use of polyketones in engineering plastics. This included a study of the damage to high speed impellers in fabricated carbon fibre reinforced PEEK. 

Perfluorinated Polymers, Polytetrafluoroethylene Polyamides, Aromatic Polyamides, Plastics Polyarylates Poly(arylene sufide)s Polycarbonates Cyclohexanedimethanol Polyesters Polyesters, Main Chain Aromatic Polyesters, Thermoplastic Polyethers, Aromatic Poly(ethylene naph-thanoate) Polyimides Polyketones Poly(phenylene ether) Polysulfones Poly(trimethylene terephthalate) Rigid Rod Polymers Syndiotactic Polystyrene . 

LNP Engineering Plastics [12] introduced a series of formulations based on polyketone-reinforced glass and carbon fiber with polytetrafluoroethylene (PTFE) as lubricant. These polymers have good impact performances for a wide temperature range they have high chemical resistance, good hydrolytic stability, and superior resilience. 

High-temperature thermoplastics such as polyarylate, polyketone, polysulfide, polysulfone, and thermoplastic polyimide have inherently good resistance to thermal-oxidative conditions however, stabilization against UV-light is often required. The principles described earlier for other thermoplastics also apply to the stabilization of these plastics. 

During the 1980s and 1990s, the pace of research and commercialisation of high-temperature plastics accelerated dramatically. The thermoplastic resin manufacturers introduced many new materials based on imide, sulfone, and ketone-based polymers. These include polyetherimide (1982) and polyphthalamide (1991). Polyketones and liquid crystal polymers were also commercialised in the 1990s. 

Bhandari, Y. J. Sheth, K. C.and Haralur, G., Novel aromatic polyketone blends with a new siloxane polyetherimide copolymer, ANTEC 2010, Proceedings of the 68th Annual Technical Conference Exhibition, Orlando, FL, 16-20.05.2010, Society of Plastics Engineers, pp. 895-898. 

Haralur, G. M. KaUasam, G.and Sheth, K., Aromatic polyketone and polysi-loxane/polyimide block copolymer composition, US Patent Application, 20090234060 Al, 17.09.2009, to Sabic Irmovative Plastics. 

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