THE POLYESTER RESIN FAMILY PET, PBT - PTT - PEN AND MODIFIED POLYESTER LATEST STAGE OF DEVELOPMENT

摘要

1. The major research efforts are still in the field of bottle and packaging resins 2. Research and development is increasingly concentrated on material science issues 3. Development of PET based polymers for engineering plastics has meanwhile increased to nearly the amount packaging resin 4. For PET resin, the existing processes are approaching stepwise, to lower molecular weights in the precursor and shifting higher conversion rates to the SSP 5. With new capacity of about 600 t/d in 2003 PBT is seeking a push in production capacity 6. The basis of PTT production is access to low-price and high-quality PDO; production processes are available 7. PEN is mainly for hi-tech and high-performance products; bulk applications are failing because of the high price of raw materials 8. Some of the high modified polyesters, like for example PETG, are on the way to being produced in larger quantities 9. Availability and price of special co-monomers are limiting production and application 10. Specialized polyester producer are providing tailored products.