CAS 30965-26-5 Polybutylene terephthalate - Materials / Alfa Chemistry

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Polybutylene terephthalate

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Catalog Number

ACM30965265

CAS Number

30965-26-5

Product Name

Polybutylene terephthalate

Structure

Category

Hydrophobic Polymers

IUPAC Name

butane-1,4-diol;dimethyl benzene-1,4-dicarboxylate

Molecular Weight

284.3g/mol

Molecular Formula

C14H20O6

Canonical SMILES

COC(=O)C1=CC=C(C=C1)C(=O)OC.C(CCO)CO

InChI

InChI=1S/C10H10O4.C4H10O2/c1-13-9(11)7-3-5-8(6-4-7)10(12)14-2;5-3-1-2-4-6/h3-6H,1-2H3;5-6H,1-4H2

InChI Key

DHQLHXKTPYFDCS-UHFFFAOYSA-N

Melting Point

225°C

Density

1.31

Application

Polybutylene Terephthalate (PBT) serves as a medium performance engineering polymer, offering a combination of properties that make it ideal for various applications. It is produced through a multi-step industrial process involving the transesterification of dimethyl terephthalate with 1,4-butanediol, followed by polycondensation. This semicrystalline thermoplastic polyester is known for its excellent tensile strength, toughness, and low water absorption. PBT's favorable frictional properties, along with its robust chemical resistance and superior electrical properties, make it particularly suitable for producing connectors, capacitors, cable enclosures, and components in hot appliances like irons and kettles. When reinforced with glass fibers, PBT exhibits enhanced stiffness and mechanical strength, making it a versatile choice in engineering applications.

Complexity

210

Covalently-Bonded Unit Count

EC Number

608-561-9

Exact Mass

284.125988g/mol

Formal Charge

Heavy Atom Count

Monoisotopic Mass

284.125988g/mol

Rotatable Bond Count