https://blobppplus.blob.core.windows.net/technology/Invista%20PTA%20Technology.png

Reconstructed PFD of INVISTA PTA technology based on the equipment train and stream numbering from US5698734A and EP4021881B1

INVISTA's PTA technology and its predecessor lineage trace back through DuPont and Amoco-derived liquid-phase catalytic oxidation chemistry, evolved by INVISTA's technology through successive generations — P6, P7, P8, and now P8⁺⁺ — each targeting improved scale, reduced capital intensity, and lower variable cost per tonne. Sinopec Yizheng's second PTA line, commissioned around 2003, used IPT's earlier P6 technology, while later lines progressively adopted P7 and then P8/P8⁺⁺. By 2018, INVISTA reported having licensed nearly 21 million tonnes of PTA capacity since 2012 alone, representing almost two-thirds of all license capacity awarded in that period. Since 2021, the PTA technology has continued to be licensed under Koch Technology Solutions (KTS).

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