121 |
CALCIUM PHOSPHATE CEMENT, USE AND PREPARATION THEREOF |
EP04750157.2 |
2004-04-16 |
EP1613563A1 |
2006-01-11 |
LIN, Jiin-Huey, Chern; JU, Chien-Ping; CHEN, Wen-Cheng; LIN, Kuan-Liang; WANG, I-Chang |
Monophasic TTCP particles having surfaces covered with whiskers or fine crystals with a width ranging from 2 to 500 nm and a length ranging from 5 to 5000 nm are provided and methods for their preparation. In another embodiment, methods are provided for using such monophasic TTCP particles to prepare a calcium phosphate cement having the consistency of paste that sets to form a substance with a compressive strength of about 10 MPa after setting for about 30 minutes and a compressive strength of about 25 MPa within 24 hours of exposure to in vivo conditions. The paste can be used directly to treat a defect in a bone or a tooth in a patient or the paste can be shaped and implanted into the defect. |
122 |
CALCIUM PHOSPHATE CEMENT |
EP01941021 |
2001-06-13 |
EP1298103A4 |
2005-04-20 |
HIRANO MASAHIRO; TAKEUCHI HIROYASU |
A calcium phosphate cement comprising 2 to 10 mass % of a hydration product between calcium secondary phosphate and alpha type calcium tertiary phosphate, 10 to 25 mass % of forth calcium phosphate, 3 to 10 % of second calcium phosphate and alpha type calcium tertiary phosphate. The calcium phosphate cement is capable of forming a hardened product having high strength. |
123 |
STRONTIUM-APATIT-ZEMENT-ZUBEREITUNGEN UND DEREN VERWENDUNGEN |
EP03735389.3 |
2003-05-14 |
EP1511521A1 |
2005-03-09 |
WENZ, Robert |
The invention relates to calcium-strontium-hydroxyphosphate-(strontium-apatite-) cement preparations containing a powder mixture containing molar quantities of the components calcium (Ca), strontium (Sr) and orthophosphate (P) in a mixture ranging from 1.00 < Ca/P = 1.5 and 0 < Sr/P < 1,5. Said preparations also contain an alkaline salt or an ammonium salt of the orthophosphorous acid, and water and/or an aqueous solution. The powder mixture particularly contains, as a Ca-component, Ca3 (P04)2 (TCP) and, as a Sr-component, SrHP04 and/or Sr3 (P04)2 and, optionally, additionally SrC03. An aqueous solution of an alkaline salt or an ammonium salt of the orthophosphorous acid can be used as an aqueous mixing solution in order to form the strontium-apatite-cement. |
124 |
PROCEDE POUR L'INERTAGE D'UNE CENDRE, POUZZOLANE ARTIFICIELLE OBTENUE AU MOYEN DUDIT PROCEDE |
EP01985901.6 |
2001-12-12 |
EP1343734A2 |
2003-09-17 |
CRIADO, Claude; GIRAUD, Fabrice; AUBERT, Jean-Emmanuel; HUSSON, Bernard |
The invention concerns a method for inerting ash derived from urban waste incineration which consists in successively treating (19) the ash with a water-soluble phosphate (20) in the presence of water, in conditions adjusted to crystallise the hydroxylapatite and/or the whitlockite and calcining (22) it. The invention also concerns an artificial pozzolan obtained by subjecting ash derived from urban waste incineration to said inerting method. |
125 |
BIOCOMPATIBLE CEMENT CONTAINING REACTIVE CALCIUM PHOSPHATE NANOPARTICLES AND METHODS FOR MAKING AND USING SUCH CEMENT |
EP01981683.4 |
2001-10-16 |
EP1335887A1 |
2003-08-20 |
GENGE, Brian, R.; WU, Licia; SAUER, Glenn, R.; WUTHIER, Roy, E.; GENGE, Ronald |
A cement powder is disclosed that contains reactive tricalcium phosphate nanoparticles and other ingredients required to form a cementous material. Methods of making the reactive tricalcium phosphate nanoparticles, the cement powder, the cement paste, and cured cement are also provided, as are methods and articles for using the cement. |
126 |
EP0749400A4 - |
EP95939684 |
1995-10-31 |
EP0749400A4 |
1997-01-02 |
|
A room temperature stable, substantially phase pure ±-C 3 P product is provided, which may be included in a reactive composition suitable for preparation of calcium phosphate cements. The ±-C 3 P product may be obtained by heating a tricalcium phosphate source to a temperature sufficient to convert substantially all of the tricalcium phosphate source to a substantially phase pure ±-C 3 P product. The temperature of the resultant product is rapidly cooled to a temperature below about 700°C, resulting in the room temperature stable, ±-C 3 P product. The resultant ±-C 3 P product may be milled to provide a composition suitable for use in cement production. |
127 |
REACTIVE TRICALCIUM PHOSPHATE COMPOSITIONS AND USES |
EP95939684.0 |
1995-10-31 |
EP0749400A1 |
1996-12-27 |
FULMER, Mark; CONSTANTZ, Brent, R.; ISON, Ira, C.; BARR, Bryan, M. |
Methods for producing a room temperature stable, phase pure α-C3P product, and compositions derived therefrom, are provided. In the subject method, a tricalcium phosphate source is heated to a temperature sufficient to convert substantially all of said tricalcium phosphate source to a substantially phase pure α-C3P product. The temperature of the resultant product is rapidly cooled to a temperature below about 700 °C, resulting in a room temperature stable, reactive α-C3P product. The resultant α-C3P product may be milled to provide an α-C3P composition which may find use in the preparation of calcium phosphate cements. |
128 |
SETTABLE, FORM-FILLING LOSS CIRCULATION CONTROL COMPOSITIONS COMPRISING IN SITU FOAMED NON-HYDRAULIC SOREL CEMENT SYSTEMS AND METHOD OF USE |
US16137919 |
2018-09-21 |
US20190225860A1 |
2019-07-25 |
B. Raghava Reddy |
This document relates to settable, non-hydraulic foamed cement compositions comprising nitrogen gas-generating compositions used for loss circulation control. |
129 |
Hybrid magnesium cement and method of manufacture |
US14968214 |
2015-12-14 |
US10150700B2 |
2018-12-11 |
Hwai-Chung Wu; Kraig Warnemuende |
A hybrid magnesium cement composition formed from an A-side component and a B-side component. The A-side component includes an A1-component including a light-burn grade magnesium-containing material, and an A2-component including a non-metallic oxide salt. A B-side component having a metal silicate polymer is included. |
130 |
Magnesium phosphate cement |
US13904296 |
2013-05-29 |
US09815738B2 |
2017-11-14 |
Jerry E. Rademan; Claudio Manissero; John K. Gehret; Mark A. Shand; James Preskenis |
Magnesium phosphate cement binder systems and method for providing magnesium phosphate cements are described. In an embodiment, a magnesium phosphate cement binder system may include magnesium oxide that has been calcined at a temperature of between about 900° F. to about 1800° F. The magnesium phosphate cement binder system may also include a phosphate material. Other formulations, compositions, and methods are also described. |
131 |
Magnesium phosphate cement |
US14993520 |
2016-01-12 |
US09809494B2 |
2017-11-07 |
Jerry E. Rademan; Claudio Manissero; John K. Gehret; Mark A. Shand; James Preskenis |
Magnesium phosphate cement binder systems and method for providing magnesium phosphate cements are described. In an embodiment, a magnesium phosphate cement binder system may include magnesium oxide that has been calcined at a temperature of between about 900° F. to about 1800° F. The magnesium phosphate cement binder system may also include a phosphate material. Other formulations, compositions, and methods are also described. |
132 |
Hydraulic Cements, Methods and Products |
US15362587 |
2016-11-28 |
US20170072095A1 |
2017-03-16 |
Håkan Engqvist; Jonas Åberg |
Non-aqueous, hydraulic cement-forming compositions comprise a non-aqueous mixture of (a) a non-hydrated powder composition comprising calcium aluminate powder, and (b) non-aqueous water-miscible liquid. Hardened cements are formed from such hydraulic cement-forming compositions, and methods of producing hardened cements, kits, and articles of manufacture employ such hydraulic cement-forming compositions. |
133 |
Struvite-K and syngenite composition for use in building materials |
US14457826 |
2014-08-12 |
US09422193B2 |
2016-08-23 |
Robert J. Hauber; Gerald D. Boydston; Nathan Frailey; Severine Lamberet; Gaurav V. Pattarkine; Isaac K. Cherian; Sergio Centurione; Anirban Ghosh |
A composition and process for the manufacture thereof for use in a hybrid building material comprising at least in part Syngenite (K2Ca(SO4)2.H2O) and Struvite-K (KMgPO4.6H2O). Specified constituents, including magnesium oxide (MgO), monopotassium phosphate (MKP) and stucco (calcium sulfate hemihydrate) are mixed in predetermined ratios and the reaction proceeds through multiple phases reactions which at times are proceeding simultaneously and in parallel and reaction may even compete with each other for reagents if the Struvite-K reaction is not buffered to slow down the reaction rate). A number of variable factors, such as water temperature, pH mixing times and rates, have been found to affect resultant reaction products. Preferred ratios of chemical constituents and manufacturing parameters, including predetermined and specified ratios of Struvite-K and Syngenite may be provided for specified purposes, optimized in respect of stoichiometry to reduce the combined heat of formation to non-destructive levels. |
134 |
Hybrid Magnesium Cement and Method of Manufacture |
US14968214 |
2015-12-14 |
US20160102017A1 |
2016-04-14 |
Hwai-Chung WU; Kraig Warnemuende |
A hybrid magnesium cement composition formed from an A-side component and a B-side component. The A-side component includes an A1-component including a light-burn grade magnesium-containing material, and an A2-component including a non-metallic oxide salt. A B-side component having a metal silicate polymer is included. |
135 |
CALCIUM PHOSPHATE CEMENT COMPOSITION |
US14785818 |
2013-04-22 |
US20160075599A1 |
2016-03-17 |
Nicola Döbelin; Hanna Tiainen; Marc Bohner |
A calcium phosphate cement composition that includes the following two components: A) one or several calcium phosphate powders suspended in an aqueous solution including inhibitor cations inhibiting a reaction of the calcium phosphate powders with water, the inhibitor cations being selected from Mg2+, Sr2+ and Ba2+ at a concentration greater than 0.01 M; and B) an aqueous solution including Ca2+ cations at a concentration greater than 0.1 M. This calcium phosphate cement compositions can be safely stored for years yet still retain its full reactivity when mixed. |
136 |
Hydraulic cements, methods and products |
US14246679 |
2014-04-07 |
US09206080B2 |
2015-12-08 |
Håkan Engqvist; Jonas Åberg |
Non-aqueous hydraulic cement compositions comprise a non-aqueous mixture of a powder composition and a non-aqueous water-miscible liquid. In one embodiment, powder composition is a Brushite or Monetite-forming calcium phosphate powder composition. In another embodiment, the powder composition comprises porous β-tricalcium phosphate (β-TCP) granules and at least one additional calcium phosphate powder. In another embodiment, the powder composition comprises calcium silicate powder. In a further embodiment, the powder composition comprises calcium aluminate powder. In another embodiment, the powder composition is a cement composition and comprises nanopowders having a grain size of less than 1 micron. Hardened cements are formed from such hydraulic cement compositions, and methods of producing hardened cements, kits, and articles of manufacture employ such hydraulic cement compositions. |
137 |
Struvite-K and Syngenite Composition for Use in Building Materials |
US14457826 |
2014-08-12 |
US20150059621A1 |
2015-03-05 |
Robert J. Hauber; Gerald D. Boydston; Nathan Frailey; Severine Lamberet; Gaurav V. Pattarkine; Isaac K. Cherian; Sergio Centurione; Anirban Ghosh |
A composition and process for the manufacture thereof for use in a hybrid building material comprising at least in part Syngenite (K2Ca(SO4)2.H2O) and Struvite-K (KMgPO4.6H2O). Specified constituents, including magnesium oxide (MgO), monopotassium phosphate (MKP) and stucco (calcium sulfate hemihydrate) are mixed in predetermined ratios and the reaction proceeds through multiple phases reactions which at times are proceeding simultaneously and in parallel and reaction may even compete with each other for reagents if the Struvite-K reaction is not buffered to slow down the reaction rate). A number of variable factors, such as water temperature, pH mixing times and rates, have been found to affect resultant reaction products. Preferred ratios of chemical constituents and manufacturing parameters, including predetermined and specified ratios of Struvite-K and Syngenite may be provided for specified purposes, optimized in respect of stoichiometry to reduce the combined heat of formation to non-destructive levels. |
138 |
Storage Stable Premixed Hydraulic Cement Compositions, Cements, Methods, and Articles |
US14343105 |
2012-09-10 |
US20140312517A1 |
2014-10-23 |
Håkan Engqvist; Jonas Åberg |
Refrigerated hydraulic cement compositions comprise a mixture of (a) β-tricalcium phosphate powder, (b) monocalcium phosphate comprising monocalcium phosphate anhydrous (MCPA), monocalcium phosphate monohydrate (MCPM), or a combination thereof, wherein a 0.1 g/ml saturated aqueous solution of the monocalcium phosphate has a pH less than 3.0, (c) non-aqueous water-miscible liquid, and (d) an aqueous hydrating liquid. The aqueous hydrating liquid is included in an amount of about 1-50 volume percent, based on the combined volume of the non-aqueous water-miscible liquid and the aqueous hydration liquid, and the refrigerated hydraulic cement composition is storage stable for greater than one day, without setting. Methods of forming hardened cements in vivo and/or for forming implants for use in vivo employ the hydraulic cement compositions. |
139 |
MAGNESIUM PHOSPHATE CEMENT |
US13904296 |
2013-05-29 |
US20140096704A1 |
2014-04-10 |
Jerry E. Rademan; Claudio Manissero; John K. Gehret; Mark A. Shand; James Preskenis |
Magnesium phosphate cement binder systems and method for providing magnesium phosphate cements are described. In an embodiment, a magnesium phosphate cement binder system may include magnesium oxide that has been calcined at a temperature of between about 900° F. to about 1800° F. The magnesium phosphate cement binder system may also include a phosphate material. Other formulations, compositions, and methods are also described. |
140 |
Tricalcium phosphate coarse particle compositions and methods for making the same |
US13554999 |
2012-07-20 |
US08496900B2 |
2013-07-30 |
Sahil Jalota; David C. Delaney; Duran N. Yetkinler |
Methods for preparing a tricalcium phosphate coarse particle composition are provided. Aspects of the methods include converting an initial tricalcium phosphate particulate composition to hydroxyapatite, sintering the resultant hydroxyapatite to produce a second tricalcium phosphate composition and then mechanically manipulating the second tricalcium phosphate composition to produce a tricalcium phosphate coarse particle composition. The subject methods and compositions produced thereby find use in a variety of applications. |