Patent ID: 8747791

Claim:
A calcium phosphate porous material made of β-tricalcium phosphate, wherein said porous material has a concentration of total organic carbon of 5 mg/L or less, wherein said porous material is produced by calcining a mixture of micronized β-tricalcium phosphate, a deflocculant and a foaming agent in a furnace, wherein during calcination said mixture is retained at a temperature range of 300-500° C. for 2-4 hours so that pores are produced in the porous material at said temperature range when the deflocculant and the foaming agent are decomposed and vanished, wherein when the mixture is retained at a temperature between 300-500° C., the mixture is exposed to a temperature-rising rate having a slope that is one third or less than a temperature-rising rate slope before and after a period of time when the mixture is retained at a temperature between 300-500° C., and wherein the mixture is heated to about 1000° C. after being retained at a temperature between 300-500° C.