CAS 106-42-3 P-Xylene/ Paraxylene is a primary feedstock for making purified terephthalic acid (PTA), which is used as feedstock for polyester.
Why Is p-Xylene a Key Raw Material for PTA?
p-Xylene (PX) is a key raw material for Purified Terephthalic Acid (PTA) primarily because its molecular structure allows it to be efficiently oxidized into terephthalic acid.
1. Suitable Molecular Structure for Oxidation
p-Xylene (CAS 106-42-3) is a core raw material for Purified Terephthalic Acid (PTA) due to its molecular structure, which facilitates oxidation reactions. These methyl groups can be converted into carboxylic acid groups required for polymerisation, directly forming PTA. p-Xylene is highly compatible with PTA production as this structural feature enables targeted conversion without excessive by-products.
2. Efficient Industrial Conversion Process
The AMOCO process relies on p-Xylene (CAS 106-42-3). This liquid-phase air oxidation process uses cobalt and manganese catalysts, converting over 98% of p-xylene into PTA. Moreover, p-Xylene is derived from crude oil or naphtha via catalytic reforming, ensuring a stable supply for the polyester industry.
3. Indispensable for High-Quality PET Production
PTA from p-xylene is irreplaceable for making PET products like polyester fibres, films and plastic bottles. High-purity p-xylene guarantees the quality of the final PET products. This reliable conversion pathway renders p-xylene the dominant feedstock in the global PTA market.
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