Current methods of PET processing involve either slightly lowering the intrinsic viscosity (iV) values or using solid state condensation (SSP method) to increase the iV value. The SSP method keeps the PET material at high temperature and in a vacuum for several hours, and it achieves the desired increase in the iV value through polycondensation, specifically in the solid phase.
NGR's LSP process aims to use the higher rate of reaction in the
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