Polyethylene Terephthalate (PET) Resin
Introduction
Polyethylene terephthalate (PET) resin offers excellent transparency, mechanical strength, and gas barrier properties and is widely used in applications such as containers and packaging, industrial components, and sheets. Teijin offers a broad range of PET resin grades, primarily based on titanium catalyst technology, to meet diverse application and performance requirements.
Features
Titanium-Catalyzed PET Resin
- Stable supply and cost advantages
- Titanium is more cost-effective than rare materials and offers greater supply stability.
- Safety
- Uses titanium, a material also used in medical applications.
- Reduced environmental impact
- Required only a small amount of catalyst, reducing catalyst residue.
- Leaves minimal metal residue after incineration.
- High transparency and excellent appearance
- Offers excellent color and clarity.
- Tailored properties for diverse applications
- Properties can be selected to suit specific applications through a range of homopolymer and copolymer grades with different molecular weights.
Comparison of Properties by Catalyst Type (Reference)
Grade Lists
Food hygiene
- Japan
Some grades meet requirements of various notices of the Food Sanitation Act, and comply to the positive list of the Japan Hygienic Olefin and Styrene Plastics Association
(Please contact us for details.)
- USA
Some grades meet FDA CFR §177.1630 standards
(Please contact us for details.)
Titanium catalyst grades
| Property | Unit | Measurement method | TRN-MTJ | TRN-8550FF | TRN-RTJ | TRN-8385FC |
|---|---|---|---|---|---|---|
| Intrinsic viscosity | dl/g | In-house method | 0.53 | 0.77 | 0.64 | 0.81 |
| Color (b-value) |
- | In-house method | -3 | -1 | -2 | -1 |
| Melting point | ℃ | DSC | 254 | 252 | 249 | 238 |
| Crystallization speed | Fast | Fast | Somewhat fast | Somewhat fast | ||
| Comonomer | None | None | Present | Present | ||
| Applications |
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Antimony catalyst grades
| Property | Unit | Measurement method | TR-BB | TRN-8384AC |
|---|---|---|---|---|
| Intrinsic viscosity | dl/g | In-house method | 0.88 | 0.89 |
| Melting point | - | In-house method | -4 | -2 |
| Melting point | ℃ | DSC | 245 | 238 |
| Crystallization speed | Somewhat fast | Extremely slow | ||
| Comonomer | Present | Present | ||
| Applications |
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- *The values listed in this table are typical values and are not intended to guarantee performance for any specific application.
- *As of September 2026
Technical Information
To support material selection, the following section presents the key characteristics of titanium-catalyzed PET resin, together with the technical rationale and practical benefits.
Environmental Benefits of Antimony-Free Catalyst Technology
Because antimony is not used as a polymerization catalyst, titanium-catalyzed PET resin supports antimony-free material design.
- Molding applications：Supports material designs without intentionally added heavy metals.
- Fiber applications：Helps minimize metal leaching during dyeing and other processing steps.
A clean material option for applications with environmental and food-related requirements.
* In this document, heavy metals are defined as metals with a specific gravity of 5 or greater.
Improved Productivity through Reduced Maintenance Requirements
Titanium-catalyzed PET resin generates lower levels of decomposition gases and oligomers during processing, helping reduce deposits on production equipment.
- Fiber spinning：Extends intervals between spinneret cleanings.
- Film production：Reduces the frequency of roll cleaning.
- Molding：Reduces the frequency of mold cleaning.
Fewer equipment shutdowns and improved equipment availability.
Reduced Deposit Formation
Comparison after 48 hours of fiber spinning at 295°C
Significantly reduced deposit formation → Longer cleaning intervals
Processability
Our titanium- catalyzed PET resin offers stable processability in biaxial stretch blow molding, particularly for bottle applications.
- Biaxial stretch blow molding (container applications)
- Film (biaxial stretching)/li>
- Extrusion
- Fiber production
⇒ Supports consistent quality across a range of processing methods and applications.