Calcium phosphate base particulate compound, process for producing the same and composition comprising the compound
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United States of America Patent
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Issued Date -
Jan 19, 2006
app pub date -
Dec 4, 2003
filing date -
Dec 4, 2002
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A calcium phosphate base particulate compound is provided which satisfies (a) 20.ltoreq.Sw.ltoreq.300 (BET specific surface area (m.sup.2/g); (b) 1.ltoreq.Tg.ltoreq.150 (heat loss (mg/g) per 1 g of calcium phosphate from 250 to 500.degree. C.); (c) 0.005.ltoreq.Dx50.ltoreq.0.5 (cumulative 50% average diameter (.mu.m) counted from larger particle side based on the observation by TEM); and (d) 1.5.ltoreq.Dx50/.sigma.x.ltoreq.20 (.sigma.x: standard deviation {In(Dx16/Dx50)}) The calcium phosphate base particulate compound of the present invention is excellent not only in particulate evenness and dispersibility but in thermal stability, and gives a resin composition excellent in anti-blocking property, a resin composition excellent in printing suitability, and a food composition such as good taste calcium-enriched milk with less precipitation.
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