Mitsubishi Chemical Corp. says it has developed a bio-based polycarbonate resin.
Durabio is based on isosorbide as a comonomer that replaces bisphenol A. Isosorbide is derived from glucose, widely available as a biological feedstock.
The Tokyo-based materials giant says Durabio is not biodegradable and its durability suits it to a range of engineering applications. Key properties include high transparency, excellent optical properties and higher resistance to abrasion than conventional PC. Mitsubishi claims Durabio's optical properties are superior to conventional PC. Its impact resistance characteristics compare favorably with conventional PC, according to the company.
Mitsubishi cites optical and energy components, electronics, automotive and décor schemes as potential applications for Durabio.
The firm says Durabio's desirable optical properties relate to its isosorbide ingredient, which unlike BPA is an aliphatic chemical. In addition to transparency and optical homogeneity, the resin yellows only slightly when exposed to light. Its transparency promotes freedom for coloration, even for deep hues and metallic effects.