[EN] THERMOSENSITIVE RECORDING MEDIUM AND EXTERIOR MEMBER<br/>[FR] SUPPORT D'ENREGISTREMENT THERMOSENSIBLE ET ÉLÉMENT EXTÉRIEUR<br/>[JA] 感熱性記録媒体および外装部材
A novel method for the preparation of mixed diesters of phosphoricacid has been investigated. It was found that mixed diesters of phosphoricacid were prepared by the reaction of alkyl 2-chloromethyl-4-nitrophenyl hydrogen phosphates with alcohols in dry pyridine. On the other hand, these diesters were also obtained from dialkyl 2-chloromethyl-4-nitrophenyl phosphates on hydrolysis under mild conditions