Title (en)

HYDROXYAPATITE DISPERSIONS COMPRISING AN AMINO ACID AS STABILISING AGENT AND METHOD FOR PREPARING SAME

Title (de)

DISPERSIONEN VON HYDROXYAPATIT, DIE ZUR STABILISIERUNG EINE AMINSÄURE ENTHALTEN, SOWIE SEIN HERSTELLUNGVERFAHREN

Title (fr)

DISPERSIONS D'HYDROXYAPATITE COMPRENANT UN ACIDE AMINE EN TANT QU'AGENT STABILISANT, ET LEUR PROCEDE DE PREPARATION

Publication

EP 1381454 A1 20040121 (FR)

Application

EP 02726280 A 20020425

Priority

• FR 0201440 W 20020425
• FR 0105747 A 20010427

Abstract (en)

[origin: WO02087746A1] The invention concerns a stable aqueous colloidal dispersion of colloids with apatite structure, having a pH ranging between 5 and 10, consisting of oblong colloids with an average number length ranging between 20 and 250 nm and an equivalent aspect ratio (number average length/equivalent diameter ratio) ranging between 1 and 300 or in spherical shape having a diameter ranging between 10 and 100 nm, and comprising one or several amino acids optionally in ionized form, as stabilising agents for said colloids with apatite structure corresponding to formula (I): Ca10-x(HPO4)x(PO4)6-x(J)2-x, wherein: x and J are such as defined in Claim 1.

IPC 1-7

B01J 13/00; C01B 25/32

IPC 8 full level

B01J 13/00 (2006.01); C01B 25/32 (2006.01); C09K 23/28 (2022.01)

CPC (source: EP US)

A61K 6/17 (2020.01 - EP US); A61K 6/838 (2020.01 - EP US); B01J 13/0008 (2013.01 - EP US); C01B 25/32 (2013.01 - EP US)

Citation (search report)

See references of WO 02087746A1

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR

DOCDB simple family (publication)

WO 02087746 A1 20021107; BR 0208385 A 20040615; EP 1381454 A1 20040121; FR 2823992 A1 20021031; FR 2823992 B1 20030620; JP 2004534709 A 20041118; MX PA03009682 A 20040524; US 2004170699 A1 20040902

DOCDB simple family (application)

FR 0201440 W 20020425; BR 0208385 A 20020425; EP 02726280 A 20020425; FR 0105747 A 20010427; JP 2002585080 A 20020425; MX PA03009682 A 20020425; US 47402404 A 20040409