Polyorthocarbonates

• Published in: Journal of Polymer Science Part A-1: Polymer Chemistry
• Main Author: Takekoshi, Tohru
• Format: Article in Journal/Newspaper
• Language: English
• Published: Wiley 1972
• Subjects: Carbonic acid
• Online Access: http://dx.doi.org/10.1002/pol.1972.170101207; https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fpol.1972.170101207; https://onlinelibrary.wiley.com/doi/pdf/10.1002/pol.1972.170101207

Abstract Hitherto unreported aromatic polyorthocarbonates have been synthesized by the reaction of dichlorodiphenoxymethane and various aromatic dihydroxy compounds. magnified image The polymers possess the structure of a methanetetra‐ol ether (carbonic acid orthoester) in the main chain. The direct structural evidence was obtained by 13 C NMR. High molecular weight, linear polyorthocarbonates were derived from sterically unhindered bisphenols. The polymers were noncrystalline, and clear, flexible films were obtained by casting from solution. Aromatic polyorthocarbonates decomposed above 360°C under nitrogen. The polymers were extremely stable under basic conditions but were unstable in strongly acidic media, particularly at elevated temperatures.