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This section provides an overview for polybutylene terephthalate (pbt) as well as their applications and principles. Also, please take a look at the list of 13 polybutylene terephthalate (pbt) manufacturers and their company rankings. Here are the top-ranked polybutylene terephthalate (pbt) companies as of December, 2024: 1.RTP Company, 2.Polymer Resources, 3.S.S.B. POLYMERS & S.S.B. ENTERPRISES.
Table of Contents
Polybutylene terephthalate (PBT) is a thermoplastic polyester that is one of the engineering plastics.
It is usually abbreviated as PBT (Poly Butylene Terephthalate) and also known as polytetramethylene terephthalate (PTMT).
PBT has a structure in which the number of carbons in the alkyl chain of polyethylene terephthalate (PET) has been increased from 2 to 4, and it has the same properties as PET.
Basically, it is a relatively easy material to handle because of its high stability and lack of known toxicity.
Polybutylene terephthalate (PBT) is used as a material for a variety of products because of its good mechanical properties, high heat resistance, high chemical resistance, and good processability. In the US, polybutylene terephthalate is mostly used in the automotive field, while in Japan it has been mainly used in the electrical and electronics fields. In recent years, the use of this material has been increasing in the automotive field, particularly due to its lightweight characteristics.
Food packaging, camera parts, watch parts, gears, cams, bearings, etc.
Polybutylene terephthalate (PBT) has a melting point of 225°C, a deflection temperature under load of 65°C (1.8 kPa), a tensile strength of 56 kPa, and a flexural strength of 81 kPa. Polybutylene Terephthalate (PBT) is often used as a composite material. For example, PBT composites with 30% glass fiber can significantly increase mechanical properties, with a deflection temperature of over 200°C, tensile strength of 127 kPa, and flexural strength of 186 kPa, while maintaining the same electrical properties and dielectric constant.
In addition to its excellent mechanical properties, polybutylene terephthalate (PBT) also offers electrical properties, chemical resistance, heat resistance, abrasion resistance, low water absorption, and excellent dimensional stability. In addition, because it is made from relatively inexpensive raw materials, 1,4-butanediol and terephthalic acid, it offers an excellent balance between cost and performance, making it competitive enough against other engineering plastics.
Polybutylene terephthalate (PBT) is produced by direct polymerization, which is an esterification reaction of 1,4-butanediol and terephthalic acid, or by DMT, which is an ester exchange reaction of 1,4-butanediol and dimethyl terephthalate.
1. Direct Polymerization Method
Bis-hydroxybutyl terephthalate (BHT) is synthesized by reacting 1 mole of terephthalic acid with 2 moles of 1,4-butanediol at 150~230℃ for 60~120 minutes under normal pressure. Polybutylene terephthalate (PBT) is then obtained by setting the temperature to 250~270°C and reduced pressure conditions below 133 Pa, and proceeding with polymerization while removing the 1,4-butanediol and tetrahydrofuran that are produced. Titanium-based catalysts are often used as catalysts for esterification.
2. The DMT Method
BHT is synthesized by reacting 1 mole of dimethyl terephthalate with 2 moles of 1,4-butanediol at 150~200℃ for 60~120 minutes under normal pressure, similar to the direct polymerization method. The reaction is carried out while removing methanol that is produced during the reaction.
The amount of 1,4-butanediol is 2 moles of dimethyl terephthalate, but the reaction time depends on this amount ratio, and the smaller the molar ratio, the faster the ester exchange rate can be increased. Polybutylene terephthalate (PBT) is obtained from the generated BHT in the same way as in the direct polymerization process.
Polybutylene terephthalate (PBT) obtained by polymerization is blended with glass fiber to make glass fiber-reinforced grades, or with additives such as flame retardants to increase flame retardancy, and is then commercialized.
*Including some distributors, etc.
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RTP Company (RTPC) is an American private manufacturer of custom thermoplastic compounds that was established in Winona, Minnesota in 1982. The company produces various compounds for industrial applications, including conductive, anti-static, flame retardant, and high temperature resistant formulations. It also offers friction resistant and TPE compounds, as well as color solution compounds with metallic or glow-in-the-dark features. RTPC products are used in intensive industrial processes, such as structural reinforcement, chemical resistance treatment, and thermal stabilization. Its notable clients include Lockheed Martin, NASA, and Becton Dickinson.
Polymer Resources Ltd., located in Farmington, Connecticut, and founded in 1974, is a manufacturer and supplier of thermoplastic compounds. The company specializes in providing standard and custom-formulated engineering resins, ranging from small to large release quantities, enhanced by precision colour-matching services. The company’s product portfolio features polycarbonate resin, PPX resin, ABS resin, PBT resin, and polyetherimide resin. With UL and ISO 9001 certification, the company serves a wide range of industries, including electrical, non-invasive medical devices, consumer goods, transportation, and building and construction.
PolymerFilms, a company established in 1968, based in Charlotte, North Carolina, USA, is a distributor and supplier of plastic sheet, rod, tube, and film products. The company provides various products such as cast acrylic, aluminum composite material, HDPE, marine grade PVC foam sheet. These products are used for various applications such as signage, oil and gas, graphics, food processing, and marine. It also offers services such as cut to size, fabrication, film conversion, and sustainability.
Nexeo Plastics LLC is a distributor of plastics and thermoplastics resins and compounds established in 1973 and headquartered in The Woodlands, Texas, USA. The company offers a wide range of plastic resin types including compostable plastics, acrylics, thermoplastic copolyesters, thermoplastic elastomers, and post-industrial & post-consumer recyclates. They serve various industries, including automotive, healthcare, packaging, wire and cable, and 3D printing in more than 60 countries. The company also offers various services including material selection assistance, supply chain, and custom inventory solutions.
Nagase America LLC, founded in Japan in 1832, is a supplier of chemicals, plastics, electronics materials, cosmetics, and food ingredients. The company offers a wide spectrum of raw materials and specialty chemicals, serving industries like pharmaceuticals, agriculture, and manufacturing. Its products are used in manufacturing processes and engineering applications, the personal care and cosmetics industry pharmaceutical manufacturing, and healthcare institutions. It operates in Europe, Asia, and the Americas and has a global distribution network.
Ensinger, founded in 1966 in Germany as solely a manufacturer of plastics for commercial customers, has grown to manufacture performance and engineering thermoplastics for numerous industries worldwide. The company's products include plastic compounds, extruded semi-finished products, injection-molded finished parts, as well as compressed and cast-formed parts. Ensinger serves the plant engineering, building construction, automotive, aerospace, medical, and food markets, among many other industries. The company has over 30 international production and sales locations, serving customers across the globe.
Xiamen Keyuan Plastic Co., Ltd., established in 2006, is a manufacturer specializing in modified plastic and is headquartered in Xiamen, China. The primary emphasis of the company lies in the development, production, and commercialization of modified polymers. The goods are mainly utilized within the plastic processing business, including applications such as plastic injection and extrusion. The primary clientele of our organization consists of industries such as electronics, vehicles, household appliances, and daily necessities, among others.
S.S.B. POLYMERS & S.S.B. ENTERPRISES was founded in 2008 and is based in Maharashtra, India, and is a manufacturer of industrial plastic raw materials for various applications. The company's product folio includes Nylon Granules, Virgin Plastic Raw Materials, Color Masterbatches, Colored Plastic Granules, and Reprocessed Plastic Granules that are crucial in plastic manufacturing & recycling, textiles, home appliances, electronic devices, and, automobile manufacturing sectors. The company also offers Poly Vinyl Chloride Granules that have applications in building construction, medical devices, and food packaging industries.
Xiamen LFT Composite Plastic Co. Ltd. is a manufacturer of long-fiber reinforced thermoplastics formed in 2016 and headquartered in Fujian, China. The company offers long glass fiber and long carbon fiber-reinforced polymers, including polypropylene, polyamide, PBT, PPS, and TPU. These composite pellets are used by processors to produce finished products through injection molding, profile extrusion, or compression molding techniques. The company is certified to meet ISO 9001 and SGS quality standards and operates from a 12,000-square-meter factory. It serves the electronics, automotive, aerospace, defense, and construction industries across North America, Europe, and the Middle East.
Saudi Basic Industries Corporation (SABIC) is a Saudi Arabian manufacturer of chemicals and intermediates established in 1976 and based in Riyadh. The company produces various basic and performance chemicals, as well as intermediates, polymers, agri-nutrients, and specialty composites. They serve companies in the industrial sectors of roughly 50 countries, with a workforce of more than 31,000 employees. SABIC has secondary large facilities in Yanbu and Al-Jubail, and is a parent company of over 38 subsidiaries and affiliate operations in Asia, Africa, Europe, and North America.
Mitsubishi Gas Chemical Trading, Inc. (MGCT) is a distributor of electronics manufacturing materials, chemicals, and engineering plastics established in Tokyo in 2018 as a subsidiary of Mitsubishi Gas Chemical Company, Inc. (MGCC). The company primarily stocks various electronics manufacturing materials such as conductive pastes and solder-resistant inks for smartphones or PCBs, basic chemicals like methanol and ammonia for creating synthetic resins or fibers, and engineering plastics, sheets and films for molding. These supply MGCT's buy-and-sell operations that serve client manufacturers in the food and beverage, petrochemical, pharmaceutical and consumer electronics industries.
Henan EME Technology Co., Ltd was established in 1983, and its headquarters is in Zhengzhou, China, as a supplier of butanediol and its derivatives in China, where it purchases and stores large-scale quantities of chemicals from various suppliers. The company offers various services, such as repackaging, technical support, inventory management, formulation, and just-in-time delivery. Henan EME Technology Co., Ltd caters to several industries, encompassing manufacturing cleaning, plastics, pharmaceutical and Agro, batteries, and paint coatings and inks.
Ranking as of December 2024
Derivation Method| Rank | Company | Click Share |
|---|---|---|
| 1 | RTP Company |
21.9%
|
| 2 | Polymer Resources |
10.0%
|
| 3 | S.S.B. POLYMERS & S.S.B. ENTERPRISES |
9.2%
|
| 4 | Changzhou Mai Ti Rui New Materials Technology Co., Ltd. |
7.6%
|
| 5 | SABIC |
7.6%
|
| 6 | Xiamen Keyuan Plastic Co.,Ltd |
7.2%
|
| 7 | PolymerFilms |
6.8%
|
| 8 | Xiamen LFT Composite Plastic Co.,Ltd |
6.4%
|
| 9 | Nexeo Plastics |
6.0%
|
| 10 | Ensinger |
5.6%
|
Derivation Method
The ranking is calculated based on the click share within the polybutylene terephthalate (pbt) page as of December 2024. Click share is defined as the total number of clicks for all companies during the period divided by the number of clicks for each company.Number of Employees
Newly Established Company
Company with a History
*Including some distributors, etc.
*Including some distributors, etc.
| Country | Number of Companies | Share (%) |
|---|---|---|
|
United States of America
|
5 | 41.7% |
|
China
|
4 | 33.3% |
|
Germany
|
1 | 8.3% |
|
India
|
1 | 8.3% |
|
Japan
|
1 | 8.3% |
6 products found
6 products
Yamada Seiko Co., Ltd.
140+ people viewing
Last viewed: 8 hours ago
PBT product polybutylene terephthalate for electronic parts and automotive parts.
4 models listed
Ensinger
90+ people viewing
Last viewed: 13 hours ago
■Summary PBT material containing 30% glass fiber. Reinforced with glass fiber for high stiffness and creep strength. Suitable for use in parts that...
Kosho Co., Ltd.
20+ people viewing
Last viewed: 17 hours ago
