The Poly(1,4-butylene terephthalate) is a polymer with molecular formula of (C₈H₆O₄.C₄H₁₀O₂)_x. Its cas registry number is 26062-94-2. This chemical is called PBT for short. It is also known as Polybutylene terephthalate; Terephthalic acid 1,4-butanediol polymer; 1,4-Benzenedicarboxylic acid, polymer with 1,4-butanediol. Its appearance is pellets. It belongs to the classification code of TSCA Flag XU [Exempt from reporting under the Inventory Update Rule].

Physical properties about this chemical: (1)Crystalline thermoplastic resin; (2)Melting point: 224 ~ 227 ℃; (3)Relative density: 1.31 ~ 1.55; (4)Very low water absorption: 0.07%; (5)High mechanical strength; (6)Friction coefficient: small; (7)Self-lubricating: high performance.; (8)Heat distortion temperature: 1.82MPa load 60 ℃; (9)Excellent electrical properties; (10)Volume resistance of 1016Ω · cm, higher than the engineering plastics; (11)Arc resistance 190s; (12)Good chemical resistance, except for strong oxidizing acids such as nitric acid, sulfuric acid and alkaline substances

Uses: this compound is widely used to do structural parts in electrical, electronics, automobiles, machinery, instruments and other industries. It is also used to do structural parts with lubrication and corrosion resistance such as gears, bearings and so on.

You can still convert the following datas into molecular structure:
(1)smiles: c1(ccc(C(O*)=O)cc1)C(OCCCCO*)=O