PTA ( Purified Terephthalic Acid )

Catalog	ACMA00031839
Description	Purified Terephthalic Acid (PTA) is an alternate feed stock to Di Methyl Terephthalate for production of polyester.
Molecular Weight	166.13 g/mol
Molecular Formula	C8H6O4
Appearance	White powder
Application	Polyester: Today, PTA is the preferred raw material for Polyester which finds applications in all walks of life like clothing, furniture, upholstery, containers and films. Purified Terephthalic Acid (PTA) is a basic raw material for polyester. Purified Terephthalic Acid (PTA) reacts with Mono Ehtylene Glycol (MEG) to produce polyester. Textiles: Purified Terephthalic Acid (PTA) derivative, Polyester, is the largest synthetic fibre used in textiles. Packaging: Polyethylene Terephthalic (PET) films, sheet and molded containers for food packaging continue to grow in popularity. Light weight soft drink containers based on Purified Terephthalic Acid (PTA) are crystal clear and shatter proof. In addition, blister packaging for fresh and prepared food products is often based on Purified Terephthalic Acid (PTA). Furnishing: Staple fiber made for polyester is also used in furniture application like cushions, upholstery etc. Consumer Goods: Apart from textiles, furnishing as detailed above, PET is used in films for audio and video recording tapes. Coatings: – Purified Terephthalic Acid (PTA) is used in the polyester component of environmentally compliant coating resins, including water soluble and powder systems. Resins: – Purified Terephthalic Acid (PTA) also finds applications in Unsaturated Polyester which are used as engineering plastics. Purified Terephthalic Acid (PTA) has also applications in Speciality Chemical Industries
Form	Powder
Grade	Technical Grade
Notes	PTA was first introduced in 1965 as an alternative feedstock to Dimethyl Terephthalate (DMT) for the production of Polyester. By end of 1999, almost 85% of total world production was based on PTA and this continues to grow. Industrial, Laboratory
Packaging	50 Kg, 1100 / 1200 kg. Jumbo Bags

Case Study

Bismuth/Purified Terephthalic Acid Nanocomposite for Modified Fabric Filter

Beshkar F, et al. Cellulose, 2020, 27(16), 9559-9575.

A fabric filter, which is both hydrophobic and superoleophilic and can be recycled, was created through the use of bismuth (Bi) nanostructures and a resin that is based on purified terephthalic acid (PTA). By applying the coating composition of Bi/PTA mixture on the fabric filter surface, the modified filter successfully separated various oil/water mixtures under gravity drive with a separation efficiency of more than 93% and a repeatability of at least 10 times.
Preparation of Bi/PTA modified fabric filter
· First, various morphologies of bismuth nanostructures, including dendritic, hierarchical, flower-like, and cactus-like, were prepared by a facile electrochemical replacement reaction.
· The fabric filter was first cleaned using 6 M HCl solution and then dried in an oven at 70 °C for 30 minutes.
· In a separate process, 1 gram of bismuth nanostructures were mixed with 10 grams of purified terephthalic acid (PTA) resin after 20 minutes of ultrasonication.
· The resulting mixtures were then applied to the fabric filter surfaces using a simple hand-brushing technique. The modified filter samples were subsequently cured in an oven at 70 °C for 1 hour.

Microwave-Assisted Synthesis of Polyethylene Terephthalate from Terephthalic Acid

Espinosa-López A C, et al. Polymer Bulletin, 2019, 76, 2931-2944.

The production process of polyethylene terephthalate (PET) includes esterification/transesterification, prepolymerization, polymerization, and solid-state polymerization. This work studies the esterification step in the polymerization process of polyethylene terephthalate (PET) using ethylene glycol (EG) and terephthalic acid (TPA) via microwave-assisted synthesis (MAS). The results show that MAS can obtain low molecular weight Mn PET (308~1504 g mol-1) in a shorter reaction time compared with traditional heating methods.
Microwave-assisted esterification
· The esterification reaction was conducted in a single-step reactor using microwave radiation. A constant power of 200 W was utilized to achieve the reaction temperature, which was then maintained at lower irradiation powers ranging from 80 to 35 W. A total of five grams of the reaction mixture containing ethylene glycol (EG), terephthalic acid (TPA), and 1.5 mg of antimony trioxide (Sb2O3) were placed in a sealed 10-mL borosilicate glass vial (closed system) and purged with nitrogen gas to eliminate excess oxygen. The reaction lasted for 45 minutes with continuous magnetic stirring at 1200 rpm. A catalyst was employed for the esterification process.
· For the MAS reactions, various temperatures (250, 260, 270, and 280 °C) and molar ratios of EG/TPA (1.6, 1.8, and 2.0) were tested.