Chevron Phillips Chemical is one of the largest marketers of paraxylene in the world. We produce paraxylene at our Pascagoula, Mississippi plant.
How It's Made
Paraxylene is currently manufactured by crystallization and adsorption processes. The Pascagoula plant uses the patented hybrid adsorption/crystallization technology to produce paraxylene. This process is characterized by the use of adsorption technology to produce a medium-purity paraxylene feedstock stream that goes into a low-temperature crystallization plant to produce crystals. These crystals are centrifuged and melted to produce high purity paraxylene.
How It's Transported
Paraxylene is transported by vessel or tank car from our Pascagoula plant.
What It's Used For
Paraxylene is primarily used as a basic raw material in the manufacture of terephthalic acid (TPA), purified terephthalic acid (PTA) and dimethyl-terephthalate (DMT). TPA, PTA and DMT are used to manufacture polyethylene terephthalate (PET) saturated polyester polymers. Polyesters are used to produce fibers and films. PET bottles are widely used for water because of its non-breakage properties as well as carbonated beverages because of good carbon dioxide barrier properties. In addition, they are light-weight, shatter-resistant and possess high tensile strength. Polyester uses include:
- Carbonated and non-carbonated beverage containers
- Containers for household chemicals, toiletries, cosmetics, etc.
- Fabrics for curtains, upholstery, clothing, etc.
- Microwave oven packaging material
- Films for x-rays, magnetic tapes, photographic film and electrical insulation
- Packaging for boil-in bags, processed meats, shrink films and blister packs
Also of extreme importance is the availability of various methods for recycling polyester and the wide acceptance of products produced from recycled polyester.