## Abstract **Summary:** A review of the processes underlying the solid state postcondensation of poly(ethylene terephthalate) (PET) is presented. Fundamental aspects of the reactions are treated, and it is shown that the rate of polycondensation in the solid state depends on the relative rates of
The Solid State Postcondensation of PET, 2
β Scribed by Barbara Gantillon; Roger Spitz; Timothy F. McKenna
- Publisher
- John Wiley and Sons
- Year
- 2004
- Tongue
- English
- Weight
- 151 KB
- Volume
- 289
- Category
- Article
- ISSN
- 1438-7492
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β¦ Synopsis
Abstract
Summary: A process for the solid state polycondensation of PET is proposed. It is shown that by correctly choosing the prepolymerisation conditions it is possible to crystallise the product and to directly polymerise it in a dispersed phase. This process is significantly faster than the βstandardβ PET processes, and allows one to obtain high molecular weights directly from a prepolymer without the need to use an intermediate solution polymerisation step.
Reactor setβup for precursor preparation and dispersed phase prepolymerisation.
magnified imageReactor setβup for precursor preparation and dispersed phase prepolymerisation.
π SIMILAR VOLUMES
## Abstract **Summary:** It was demonstrated that it is possible to produce prepolymers with a numberβaverage degree of polymerisation on the order of 5β40 directly in a liquidβliquid dispersion in less than three hours. It was also shown that prepolymers made via this route and rapidly crystallise
## Abstract **Summary:** A new method of polymerising PET in the solid state is proposed in either a gas phase reactor, or in hydrocarbon dispersion. It is shown that the reaction can be carried out efficiently at temperatures on the order of 200β240βΒ°C directly from a prepolymer without the need f