CBT - PBT - Cyclics Corporation

Plastics Technology, 2005-01-06, Engineering Thermoplastic Processes Like a Thermoset
... developed by General Electric Co., is about to open a 5.5-million-lb/yr plant to produce its first CBT resins.

Plastics Technology, 2006-03-06, Make Polycarbonate Flow Easily Without Losing Toughness or Clarity
...BT polyester that literally "flows like water" in molten form. This is a brand-new use of CBT (cyclic PBT) resin from Cyclics Corp., owner of patented resin technology originally developed b...

Kunststoffe international, 2005-11-21, Exhibition Preview: North American and Canadian Products at K 2004
... viscosity like water. It contains a heat-activated catalyst that causes it to cure in the mold to form a conventional high-molecular weight polymer--in this case, PBT polyester. This one-component “CBT” resin is supplied by Cyclics Corp.,Schnectady/New York, based on patented technology originally developed by General Electric. Because of their low initial viscosity, CBT resins easily wet out nano-particle fillers. CBT is suited to impregnating continuous-fiber reinforcements, facilitating prod...

Kunststoffe international, 2005-11-21, News
...o companies may be extended, depending on future progress. Cyclics Search for a Site Cyclics Corporation has officially begun the search for a suitable site for a second plant for the world-scale production of its cyclic butylene terephthalate (CBT). Although the search is concentrating primarily on North America and Europe, other regions will also be considered. The main criteria for the site are a reasonable proximity to raw materials, low feedstock and energy prices, the availability of qual...

Kunststoffe international, 2005-11-21, PBT Oligomers: Always in Good Form
Engineering Plastics Always in Good Form PBT Oligomers. A recently developed technology is based on the fact that cyclic butylene terephthalate (CBT) oligomers – i.e. thermoplastic precursors – allow the economic production of reinforced PBT compounds under both thermoset and reactive thermoplastic processing conditions. By varying the process and process conditions, tailored PBT products covering a broad range of properties and applications can be produced. Martin Rösch The semicrystalline the...

Kunststoffe international, 2005-11-21, Reinforced Plastics: Caught Up Again
...(Fig.4). The composite panels can also be used in many different applications in the transport sector. In the field of polymer systems, a new development was displayed in the form of an in-situ polymerising system. Cyclics presented Cyclics CBT – a matrix system based on commercial PBT which could take on particular importance for liquid impregnation processes, and resin infusion or resin injection processes. The particular attraction of this system is its low reaction temperature. With polymeri...

Kunststoffe international, 2006-04-21, Processing Aid: It’s All a Matter of Flow
Additives. It’s All a Matter of Flow. Processing Aid. With CBT as an additive, processing of compounds is more efficient and simpler, thanks to the lower viscosity of the material. Because of its good compatibility with most engineering resins, the properties of compounded commodity resins can be improved and demanding special applications can also be realized. Martin Rösch. Cyclic butylene terephthalates (CBT) are thermoplastic precursors from which custom-tailored thermoplastics can be produce...

Kunststoffe international, 2006-09-28, Lightweight Construction: Advances in the Processing of Fibre-reinforced Plastics
...ce here. Up to now LCM processes have been restricted to thermoset matrix systems for only these had sufficiently low viscosities. New possibilities are emerging here due to novel thermoplastic matrix systems which polymerise in situ, for example CBT from Cyclics, Schwarzheide/Germany. The modified injection technology needed for this purpose is currently under development. Reference: Handbuch Verbundwerkstoffe – Werkstoffe, Verarbeitung, Anwendung; Ed.: Manfred Neitzel and Peter Mitschang; Ca...

Kunststoffe international, 2009-10-14, Lightweight Construction Takes Off
...astics have not been suitable for LCM techniques. This clear distinction is being softened by a new materials development, so-called in-situ polymerizing thermoplastic systems. Cyclics Corporation, Schenectady, NY, USA, for instance, offers CBT as an oligomeric butylene terephthalate. The oligomers are initially present in ring form. The rings are melted by heating, opened by a catalyst and the material is then polymerized to yield a linear polybutylene terephthalate (PBT). CBT is available in p...

Kunststoffe international, 2011-10-17, Resins and Reactive Systems
...sition temperatures of more than 190°C, with the help of amongst other things oxazolidinone resins, are available for the electronics industry [18]. Reactive without Thermosetting For several years cyclic butylene terephthalate oligomers (CBT) have been available commercially, which with the help of LCM technology can be used to produce thermoplastic composite materials [19]. At the processing temperature of 170 to 220°C reinforcing agents can be very well impregnated due to the water thin visco...

Kunststoffe international, 2012-10-15, Combining Polymerization and Molding within a Single Machine
...reliably excluded and the additives as well as the glass and carbon fiber sizing agents have to be compatible with the reactive system. Apart from PA6 anionic high speed polymerization is suitable for a range of other polymers such as PA 12, CBT, PC and PET, even if in some cases variothermic process control or long reaction times make practical usage very complex [4]. New Injection Technique Reduces Thermal Stress of the Melt Classic dosing maschines for the processing of ing polyamide – also i...