ポリブチレンテレフタレート樹脂

化学的特性Poly(butylene terephthalate) is prepared in a condensation reaction between dimethyl terephthalate and 1,4-butanediol and its repeating unit has the general structure: This thermoplastic shows good tensile strength, toughness, low water absorption, and good frictional properties, plus good chemical resistance and electrical properties.

化学性质PETはその優れた物理的特性により様々な用途に利用されています例えば飲料水やソフトドリンクのボトル食品容器化粧品容器など食品と直接接触する製品にも安全に使用できる材料ですまたPETは耐熱性がありマイクロ波加熱にも対応しているため加熱可能な食品容器としても重宝されています

用途PBT樹脂）は、成形性、電気特性、難燃性、耐薬品性、耐熱老化性、着色性に優れた結晶性のエンジニアリングプラスチックスです。

説明Polybutylene terphthalate (PBT; Poly(butylene terephthalate)) is a semicrystalline thermoplastic polyester considered as a medium performance engineering polymer. It is produced industrially in a two-step batch or continuous process. The first step involves the transesterification of dimethyl terephthalate (DMT) with 1,4-butanediol (BDO) to produce hydrobutyl terephtlate (bis-HBT) at a temperature of 200°C. The second step consists to the polycondensation of bis-HBT at 250°C to yield PBT. It exhibits both excellent electrical properties and chemical resistance. When reinforced with glass fibers, it has improved stiffness and mechanical strength. Typical uses include connectors, capacitors and cable enclosures. PBT is also used in hot appliances such as iron and kettles.