|
HS Code |
514242 |
| Chemical Formula | C12H10O4 |
| Common Abbreviation | PBT |
| Molecular Weight | 220.21 g/mol |
| Density | 1.31–1.34 g/cm3 |
| Melting Point | 223–225°C |
| Glass Transition Temperature | 22–43°C |
| Water Absorption | 0.1–0.2% |
| Tensile Strength | 45–90 MPa |
| Elongation At Break | 2–50% |
| Dielectric Strength | 15–25 kV/mm |
| Heat Distortion Temperature | 140–180°C |
| Flame Retardancy | Self-extinguishing with proper additives |
| Color | White to off-white (natural) |
| Processing Methods | Injection molding, extrusion, blow molding |
As an accredited Polybutylene Terephthalate factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Polybutylene Terephthalate is packaged in a 25 kg sealed, moisture-resistant kraft paper bag, labeled with product name and safety information. |
| Container Loading (20′ FCL) | Container Loading (20′ FCL) for Polybutylene Terephthalate: Typically 16-18 MT packed in 25 kg bags or jumbo bags, palletized or non-palletized. |
| Shipping | Polybutylene Terephthalate (PBT) is shipped in tightly sealed, moisture-proof containers such as bags, drums, or bulk bins to prevent contamination and moisture absorption. It is typically transported by truck, rail, or sea as solid pellets or granules, following standard guidelines for non-hazardous industrial chemicals. Proper labeling and documentation are required. |
| Storage | Polybutylene Terephthalate (PBT) should be stored in a cool, dry, and well-ventilated area, away from direct sunlight and sources of heat or ignition. Keep the material in tightly closed containers to prevent moisture absorption and contamination. Avoid exposure to strong oxidizing agents. Maintain storage areas clean and free from combustible materials for safety. |
| Shelf Life | Polybutylene Terephthalate (PBT) typically has a shelf life of over 2 years when stored in cool, dry conditions, unopened. |
Applications of Polybutylene Terephthalate in Industrial ManufacturingPolybutylene Terephthalate (PBT) serves as a critical engineering thermoplastic across multiple precision manufacturing sectors. Produced at industrial scale with tightly controlled polymerization, this material demonstrates notable dimensional stability, heat resistance, and dielectric performance, making it an essential choice for performance-driven downstream applications. Below we illustrate the main industrial segments where PBT consistently plays a vital role, highlighting distinctive compliance standards, dosage practices, process stages, and resulting end-products. 1. Electrical and Electronics ComponentsElectrical device makers consistently turn to PBT for its outstanding electrical insulation, low moisture uptake, and consistent mechanical strength across high-volume connector systems, relay housings, and SMT coil formers. Manufacturers favor it for tight-tolerance components that operate reliably under fluctuating voltages and in dense, miniaturized PCB layouts. Industry compliance standards
Typical usage ratio
Downstream process integration
Final product types
2. Automotive Structural and Interior PartsPBT enables vehicle manufacturers to produce lightweight, impact-resistant, and aesthetically consistent components such as mirror housings, grille shutters, seatbelt guides, and precision gears. Its reliable performance under mechanical loads and thermal cycling drives adoption in critical interior and under-the-hood segments. Industry compliance standards
Typical usage ratio
Downstream process integration
Final product types
3. LED Lighting Modules and Lamp HoldersPBT's exceptional electrical insulation and thermal aging stability meet the demands of commercial lighting systems exposed to prolonged high temperature and electrical loads. Manufacturers rely on it for LED lamp housings, sockets, and reflectors where heat management and regulatory flame retardancy remain critical. Industry compliance standards
Typical usage ratio
Downstream process integration
Final product types
4. Industrial Machinery and Appliance PartsEquipment and appliance manufacturers specify PBT in mechanisms subject to constant friction, repeated assembly, or chemical cleaning cycles, including solenoid valve housings, pump impellers, washing machine agitators, and power tool insulation. Its resistance to hot water, oils, and cleaning agents ensures reliable operation in mechanical and white goods environments. Industry compliance standards
Typical usage ratio
Downstream process integration
Final product types
5. Fiber Optic and Telecommunications DevicesPBT shows consistent validation as a cladding and protective sheath material for fiber optic microducts, high-speed data connectors, and cable management systems due to low shrinkage, resistance to environmental stress cracking, and UV stability. Telecommunications firms benefit from its process reliability in outdoor or in-line installation components. Industry compliance standards
Typical usage ratio
Downstream process integration
Final product types
6. Engineering Films and SheetsSpecialized processors utilize PBT in extruded film applications requiring a combination of high surface hardness, transparency, and chemical barrier properties, most notably for tamper-evident ID card lamination and industrial package linings. The polymer’s melt strength allows for stable, thin gauge extrusion and downstream surface modification. Industry compliance standards
Typical usage ratio
Downstream process integration
Final product types
|
Competitive Polybutylene Terephthalate prices that fit your budget—flexible terms and customized quotes for every order.
For samples, pricing, or more information, please contact us at +8618136850665 or mail to sales4@ascent-chem.com.
We will respond to you as soon as possible.
Tel: +8618136850665
Email: sales4@ascent-chem.com
Flexible payment, competitive price, premium service - Inquire now!
Years in the business have taught us that Polybutylene Terephthalate, or PBT, has earned its place across many sectors. Working inside the manufacturing plant, you see how small changes in feedstock or process temperature make a big difference in the texture and stability of the product. Our teams don’t treat PBT production as an abstract science; experience continues to shape our recipes and gives us confidence that each batch holds up to the highest expectations, not just on paper but on the work floor and in the end-use applications.
Many polymers claim broad versatility, but PBT convinces us every time with its unique blend of mechanical resilience and processing ease. Its semi-crystalline structure delivers notable dimensional stability, giving engineers fewer worries about shrinkage or warping under tough conditions. Our extrusion lines reveal a polymer that flows effortlessly, letting us craft even the most intricate components with consistent wall thickness and smooth finish. That consistency matters, whether the order is for automotive connectors or appliance housings.
Over the years, we have expanded our PBT portfolio to reflect what real customers ask for. The base resins come with natural toughness and insulation performance, making them a staple for demanding electrical components. For applications prone to higher mechanical loads, we produce grades strengthened with glass fibers — the process is more sensitive, but the payoff comes when those parts are torqued and show almost no deformation. Those glass-fiber grades take over in connector bodies, gear housings, and sensor brackets, where both strength and reliability hold value.
Every finished batch goes through mechanical and heat resistance checks on-site. We know that temperature endurance is one of PBT’s hallmarks: even standard grades shrug off repeated cycles of heat and cold, performing well up to 150°C and sometimes beyond, all without sagging or suffering in the electrical insulation that’s so crucial for appliance and automotive use. The way we control crystallization during the cooling phase directly influences these results, and we don’t cut corners — no end user wants to see a switch housing deform after three months, and we won’t ship a lot that fails in early tests.
Working in the plant, we see firsthand how end-use needs shape polymer development. It’s not enough for a polymer to check boxes in a lab. For appliance makers, PBT’s balance of stiffness and impact strength means covers and handles can take a knock or two — and still fit tightly months down the line. Automotive suppliers count on its resistance to fuels, oils, and temperature cycling. From dashboards to ignition coils, the need for a material that won’t suffer thermal degradation is non-negotiable for system reliability and long vehicle life.
For some customers in the electronics sector, flame retardancy matters most. We customize PBT formulations with effective stabilizers and flame retardants, without compromising mechanical properties or handling during rapid molding cycles. Our technical teams spend time refining each recipe so you get parts that not only pass UL 94 V-0 or V-2 tests but also deliver clean color and gloss straight from the injection machine. No yellowing, no inconsistent flow marks, just repeatable results batch after batch.
Experience tells us that materials only compete well when real-world challenges meet realistic solutions. In the realm of engineering thermoplastics, PBT has carved out its niche between polyamides like PA66 and polyesters such as PET, and in practice, it outshines both in several applications.
Polyamides bring great mechanical properties and heat resistance, but they attract moisture from the air. The result: mechanical strength and dimensions shift over time, many molded parts grow subtly out of tolerance, and electrical properties drop. By contrast, PBT barely absorbs water at all, keeping its dimensions, insulating ability, and snap fits true through humidity swings and washing cycles. Our field data from parts subjected to 85% humidity at 40°C reinforce this point — parts made from our PBT stay the course where polyamide-based parts start losing their grip.
PET shares much of its chemical heritage with PBT, but its slower crystallization demands longer cycle times and increases the risk of warp in fast-production environments. Our plant experience shows that PBT shrugs this off; you can push cycle times down, mold thinner walls, and still count on the same dense, glossy parts rolling off the line. In high-speed manufacturing, those seconds add up fast — PBT gives our customers a real edge.
We also field regular questions about acetal, or POM, another popular engineering plastic. POM excels in friction and wear, but it comes with stiffness and stability trade-offs, and not every end user wants to navigate the formaldehyde off-gassing or tougher regulatory hurdles. PBT slots in with a more agreeable environment profile and, especially in glass-filled versions, closes most of the performance gap for wear and strength.
Long before a batch of PBT resin gets shipped, our operators and technicians are monitoring each stage. The polymerization process demands steady input, strict temperature controls, and precise handling in the solid-state polycondensation phase. Experienced technicians spot subtle process drifts that automation can miss. As soon as the finished pellets leave the reactor, we check not just their bulk physical properties but their molecular weight consistency, the marker for expected toughness and impact strength in the finished molded part.
Every customer’s need pushes us to keep improving. We have run joint trials with automotive suppliers to optimize melt flow grades, adjusting catalysts and molecular weights for finer injection molding in thin-wall connectors. In projects for appliance housings, the need for pristine, scratch-resistant surfaces led us to refine our compounding lines and install finer colorant dosing. Our quality team draws lessons from every return, investigating not just lab results but feedback from actual assembly lines and end users. We know our name stands or falls on those daily experiences.
PBT’s popularity keeps growing in industries aiming for lower weight without giving up reliability. Electric vehicle makers now demand lightweight yet tough parts for power distribution systems, and here, PBT’s electrical strength and low flammability seal its spot. As EV battery pack designs tighten space and call for snap-fit connectors that won’t break, parts built from our high-flow, glass-filled grades meet those expectations — installers tell us so, citing easier assembly and parts that don’t warp if they over-torque a housing screw.
In lighting, designers switched from metal fixtures to high-gloss white PBT parts. The results: lighter assemblies, easier mounting, no corrosion, and a look that fits modern interiors. Through every phase of production, our staff identifies process tweaks that lock in toughness and color, keeping end customers satisfied and minimizing costly rejections.
Power tool makers turned to our flame-retardant, impact-resistant PBT out of frustration with lesser plastics cracking or burning up under heavy load. The fact that a drill case built in our facility can hit the ground, bounce, and not split open is a point of pride on our assembly line. Our feedback loop — from technician to process engineer to customer service — closes the gap between lab theory and hands-on reality.
As environmental regulations and standards evolve in every market, sources for raw materials and process waste reduction move from abstract concern to urgent demand. We tackled the challenge of integrating recycled materials without losing mechanical properties. Our teams developed processing aids and filtration systems to handle flake and regrind, keeping contaminant levels below limits and ensuring product remains on spec.
We also explore bio-based alternatives for PBT feedstocks. Trials on our lines with renewable glycols and terephthalic acid delivered mixed outcomes so far: bio-based PBT runs slightly differently than conventional, but successes continue to grow. By focusing on mechanical and flow properties, not just green credentials, we keep only what works and abandon options that set our customers up for disappointment.
Solving for sustainability means more than recycled content. Emissions matter, too. By investing in closed-loop water systems, we minimize wastewater and keep resin pellets out of local streams. Plant audits and continuous improvement projects root out process inefficiencies, not just to meet certificates, but because every kilogram saved in water or energy translates into customer trust and long-term savings.
At every step, honest communication with customers is crucial. Whether it’s a mold designer calling about possible plate-out on long cycles or an assembly operator flagging an unexpected warp, the shop floor becomes the proving ground for our claims. Experienced staff know that a minute insight from a line worker — say, a faint embrittlement after material sits in the dryer too long — can steer troubleshooting and improvements beats faster than any software alert. We build time for these feedbacks into every project review.
From the moment raw materials arrive, every department takes ownership. Operators check color, consistency, and bulk density; laboratory technicians put finished pellets through impact and flame tests. Problems don’t get buried and surface months later in a far-off customer’s warehouse — they get tackled by people whose names go onto every batch report we issue.
We also avoid the temptation to rest on last year’s process. Markets change, and so do specifications. Trying new stabilizers, optimizing compounding screw geometries for better filler dispersion, testing surface treatments for better paint or print adhesion — every change aims to give practical benefits for people building products in the real world.
Nothing backs up a reputation like reliability. The lessons learned across decades of making PBT amount to more than just recipes and procedures: they mean adapting to new processing technologies, shipping to partners across borders, and learning from every warranty return. Regular audits and certifications win trust from new customers, but repeat orders only come when every shipment lands with the expected properties.
Today’s market values transparency and traceability. We send lot data and processing guidance with every shipment, including dryer settings and suggested mold temperatures based on actual batch performance. Our field engineers review mold designs with customers, helping adjust for weld lines, gate placement, and cooling rates so the finished parts show off the strengths of PBT without surprises.
Growth in 3D printing is driving fresh demand for PBT filaments. We adjusted pellet size and moisture controls for smoother extrusion, supporting designers who prototype connectors or motor parts before moving to full production. The feedback loop expands — new processes, new applications, and a practical approach to problem-solving based on years of hands-on work.
We see the demands for lightweight, tough, electrically safe plastics only increasing as more technologies shift towards electrification and automation. Our investment in both pilot batches and volume production keeps options open for both established and emerging customers. Research and development blend with process know-how so the PBT we ship tomorrow continues to outwork yesterday’s standards.
Customers are moving quickly, and so do their ideas. Whether working with start-ups designing a way to integrate sensors directly into housings or meeting established automakers’ new test standards, we keep our plant flexible and our teams trained. The next challenge remains sustainability, but only if every improvement also delivers the toughness, processability, and longevity that made PBT a mainstay in challenging environments.
In every bag of resin, behind every cleared order, there’s pride and experience drawn from years of real work. PBT’s strengths and our commitment to quality shape products seen and used everywhere — from home kitchens to global car brands. We see every day as an opportunity to push further, make it better, and earn trust batch after batch.
