" ROD SHAPED APATITE CRYSTALS WITH A SPECIFIC LENGTH-TO-WIDTH RATIO"
Application 2041/CHENP/2003 published 2006-01-06, filed 2003-12-22
The invention relates to rod-shaped apatite crystals of formula Ca5(PO4)3(OH)xFy, comprising the following characteristics: a) the length-to-width-ratio of the crystal is at least •DQGE [\UHSUHVHQWLQWKHFDVHZKHUH[RU\WKHWRWDODPRXQWRIWKHFU\VWDOVexist as single hydroxylapatite crystals and fluorapatite crystals and/or as a mixture of mixed crystals, whereby in relation to the total amount of the crystals, (1 - x). 100 % of the hydroxidions are replaced by fluoridions in the case where y = 0. The invention also relates to dispersions which contain said rod-shaped apatite crystals, in addition to a method for producing said dispersions or apatite crystals.
Applicant
BASF AKTIENGESELLSCHAFT
67056 Ludwigshafen, Germany
Inventor
International Info
Classification: H04J 3/16, H03M 1/22, G02F 1/35
Publication Number: PCT/EP02/06867
Priority Information
101 30 121.9 Germany 2001-06-22
101 33 449.4 Germany 2001-07-10