ORGANIC CALCIUM PHOSPHATE PRECURSOR AND CALCIUM PHOSPHATE POWDER, CERAMIC STRUCTURE AND METHOD FOR PRODUCING THEM

摘要

PROBLEM TO BE SOLVED: To solve, on the synthesis of calcium phosphate, the problems of a conventional complex polymerization method wherein: the precursor has a very stable structure because of using large amounts of organic compounds including a polymerizing agent and a complexing agent on the production of the precursor, and the precursor must thermally be decomposed at high temperature, when the precursor is used to synthesize the calcium phosphate; since the powder obtained by the calcination of the precursor is easily coagulated, a calcium phosphate coating film obtained by coating a substrate with the powder does not become compacted; and a large amount of carbon dioxide exhausted on the thermal decomposition of an organic solvent gives loads to the environments in a non-neglected degree; and the like.;SOLUTION: The method for producing the organic calcium phosphate precursor, includes reacting a phosphorus-containing chelating agent having a phosphono group and a carboxyl group with a calcium ion-containing calcium compound in a solvent in a calcium/phosphorus molar ratio of 1.50 to 1.67 to produce the organic calcium phosphate precursor.;COPYRIGHT: (C)2011,JPO&INPIT