[Problem] Biphasic self-setting calcium phosphate (SSCP) used for bone graft material and dental material applications having shape formability, shape retentivity, and bone replacement properties in addition to biocompatibility, safety, non-infectiousness, and absence of outflow, wherein the work time for forming the shape of a kneaded material obtained by kneading biphasic SSCP powder and biphasic SSCP liquid is controlled.

[Solution] A method for controlling the work time for forming the shape of biphasic SSCP in which the moldable work time from the start of kneading to the setting of the kneaded material is adjusted to within a range of from 10 seconds to 600 seconds by kneading a biphasic SSCP powder and biphasic SSCP liquid, the biphasic SSCP powder comprising tetracalcium phosphate and -tricalcium phosphate and the biphasic SSCP liquid comprising a phosphoric acid aqueous solution containing a calcium component.

A refractory composition and processes for manufacture are provided where the compositions possess improved refractory alkali resistance and superior handling properties. Compositions and processes for their manufacture may include a plurality of ceramic particles and a binder sintered to the particles wherein the binder includes crystalline aluminum orthophosphate distributed as the result of an in situ reaction of aluminum metaphosphate with alumina. Kits provided according to the invention provide materials for use in manufacture of a composition where the kit includes aluminum metaphosphate and a nonfacile additive.

Provided herein are compositions and their methods of use to adhere (e.g., in wet and dry environments) a variety of materials together.

This invention relates to a macroporous cement composition suitable for use as a bone void filler. The macroporous cement composition comprises hydroxyapatite and -calcium pyrophosphate. The porosity of the composition is 60-80 vol %. The invention also relates to methods of manufacturing such a macroporous cement composition and a putty formulation comprising such a macroporous cement composition.

This invention relates to a macroporous cement composition suitable for use as a bone void filler. The macroporous cement composition comprises hydroxyapatite and -calcium pyrophosphate. The porosity of the composition is 60-80 vol %. The invention also relates to methods of manufacturing such a macroporous cement composition and a putty formulation comprising such a macroporous cement composition.

A composition and process for the manufacture thereof for use in a hybrid building material comprising at least in part Syngenite (K.sub.2Ca(SO.sub.4).sub.2.H.sub.2O) and Struvite-K (KMgPO.sub.4.6H.sub.2O). 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.

Non-aqueous hydraulic cement compositions comprise a non-aqueous mixture of (a) a non-hydrated powder composition comprising calcium silicate powder or calcium aluminate powder, and (b) non-aqueous water-miscible liquid. 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.

Calcium aluminate phosphate cements (CAPCs) are compositions comprising calcium aluminum oxides, phosphates, and water. These cements demonstrate considerable compressive strength and dissolution resistance and may serve as replacements for ordinary Portland cements (OPCs). They offer the added benefit of a low carbon footprint as compared to OPCs.

Described are cementitious reagent materials produced from globally abundant inorganic feedstocks. Also described are methods for the manufacture of such cementitious reagent materials and forming the reagent materials as microspheroidal glassy particles. Also described are apparatuses, systems and methods for the thermochemical production of glassy cementitious reagents with spheroidal morphology. The apparatuses, systems and methods make use of an in-flight melting/quenching technology such that solid particles are flown in suspension, melted in suspension, and then quenched in suspension. The cementitious reagents can be used in concrete to substantially reduce the CO.sub.2 emission associated with cement production.

According to the invention, a preparation is described which contains at least one calcium compound selected from the group consisting of calcium phosphates, calcium fluorides and calcium fluorophosphates and hydroxyl derivatives and carbonate derivatives of these calcium salts, calcium hydroxides and calcium oxides precipitated using at least one protein component selected from proteins and protein hydrolysates, and at least one crosslinking agent for the protein component and/or non-set cement.