What is Polybutylene Terephthalate (PBT)? Properties of PBT   
                     What is Polybutylene Terephthalate (PBT)? 
Properties of PBT
What is Polybutylene Terephthalate (PBT)?
Polybutylene Terephthalate is a semi-crystalline engineering 
thermoplastic. It shares similar properties and composition with 
polybutylene terephthalate granules. It belongs to the polyester 
family of PBT granules(VALOX 420SEO, VALOX DR51, VALOX 357X, 
etc).
The polycondensation or polymethyl terephthalate of terephthalic 
acid with 1,4-butanediol is the process that produces PBT. Special 
catalysts are used. Due to its broad range of uses, PBT natural has 
attracted commercial attention.
What is Polybutylene Terephthalate (PBT)?
There are many grades of PBT that are ideal for injection molding. These 
are:
• Reinforced
• Filled
• Impact-modified and
• Flame-retardant
Both unreinforced PBT and reinforced versions of flame-retardant 
Polybutylene Terephthalate are available. Glass-reinforced VALOX PBT 
resin has a two to threefold increase in its tensile and flexural 
strengths, as well as its moduli when compared to non-reinforced 
ones.
Properties of PBT
SABIC PBT resins have excellent electrical and mechanical 
properties. Below are the main properties of the polyester 
material.
• It is extremely stain resistant and has great machining     
properties.
• It allows for efficient material use to reduce weight and costs.
• It has excellent short-term mechanical properties such as high 
strength and toughness.
• It has good creep resistance, dimension stability, and low  
moisture absorption.
• It is resistant to thermal stress and chemical environments, 
especially in automotive underhood applications.
Properties of PBT
VALOX PBT dana has high heat deflection temperatures, high-
temperature index ratings, and high heat resistance help 
components withstand both short-term thermal excursions as well 
as long-term heat exposure.
Protective coating for electronic and electrical components is 
Polybutylene Terephthalate. It has a high level of electrical 
resistance and high dielectric force that protects against power 
circuitry leakage. Low dielectric losses reduce energy absorption for 
high-frequency electronic applications.
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