Keyflex BT Description
KEYFLEX BT is the LG Chemical’s trademark for its engineering thermoplastic
polyester elastomers.
The polyether-ester block copolymers combine
many of the most desirable characteristics of high-
performance elastomers
and flexible plastics.
KEYFLEX BT offers a unique combination of mechanical,
physical, and chemical properties that
qualifies it for a wide range of applications.
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Keyflex Composition
All grades of KEYFLEX BT are block copolymers consisting of a
hard (crystalline) segment of
polybutylene-terephthalate and a soft (amorphous)
segment based on long-chain polyether glycols.
Properties are determined by
the ratio of hard to soft segments.
Keyflex Characteristics
The highly
desirable characteristics of KEYFLEX BT resins include:
 Excellent
resistance to creep, impact, and flexural fatigue
High
impact strength and flexibility at low temperatures
Good
retention of properties at elevated temperatures
High
resistance to chemicals, oils, and solvents and weathering
High
tear strength and abrasion resistance
Easy
and economical processing
Good
recyclability.
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Keyflex Nomenclature
Contact
Harvest Polymers direct for further information on the Keyflex BT family.
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