Abstract: A process for manufacturing rubber crumb comprises the following steps: (a) suspending rubber granules having a given size in an autoclave (1) containing a supercritical fluid; (b) agitating the mixture for a predetermined time at constant pressure and constant temperature; (c) carrying out an isenthalpic expansion of the mixture from step (b) by spraying it through a nozzle (20).

Abstract: A process for manufacturing rubber crumb comprises the following steps: (a) suspending rubber granules having a given size in an autoclave (1) containing a supercritical fluid; (b) agitating the mixture for a predetermined time at constant pressure and constant temperature; (c) carrying out an isenthalpic expansion of the mixture from step (b) by spraying it through a nozzle (20).

Abstract: A process for preparing a triglyceride composition comprising from 50 to 80% by weight StOSt and from 5 to 20% by weight StOO comprises reacting triolein with stearic acid in the presence of a 1,3-specific lipase from Rhizopus oryzae to form interesterified glycerides and fractionating the interesterified triglycerides.

Abstract: A process for preparing a triglyceride composition comprising from 50 to 80% by weight StOSt and from 5 to 20% by weight StOO comprises reacting triolein with stearic acid in the presence of a 1,3-specific lipase from Rhizopus oryzae to form interesterified glycerides and fractionating the interesterified triglycerides.

Abstract: The invention concerns a method for preparing compounds for interaction of an active substance hardly soluble in an aqueous medium with a porous support. The invention is characterized in that it comprises the following steps: (a) mixing the active substance generated by supercritical fluid and the specific amount of porous support; (b) carrying out a molecular diffusion step by contacting in static mode a supercritical fluid with the mixture obtained at step (a) for the time required to improve the dissolution in the aqueous medium of the mixture obtained at step (a); (c) washing the interactive compound obtained at step (b) with a supercritical fluid flow; (d) recuperating the particles of the interactive compound thus formed. The invention also concerns a compound obtainable by said method.

Abstract: The invention concerns a method for producing particles (20, 21) at least partly crystallized, under pressure, comprising reciprocal dissolving of at least one fluid under higher or slightly lower pressure than its critical pressure with at least one substance to be treated, in a dissolving zone (2), followed by rapid depressurization with at least one depressurizing means (12) downstream of said dissolving zone (2) so as to collect said particles (21), at least partly crystallized, in the collecting zone (3) located downstream of said depressurizing means (12), said substance to be treated comprising the butterfat. Said method is characterized in that it further consists in collecting particles (20) at least partly crystallized in the dissolving zone (2). The invention also concerns a device (1) for implementing said method.

Abstract: The invention concerns a method for preparing compounds for interaction of an active substance hardly soluble in an aqueous medium with a porous support. The invention is characterized in that it comprises the following steps: (a) mixing the active substance generated by supercritical fluid and the specific amount of porous support; (b) carrying out a molecular diffusion step by contacting in static mode a supercritical fluid with the mixture obtained at step (a) for the time required to improve the dissolution in the aqueous medium of the mixture obtained at step (a); (c) washing the interactive compound obtained at step (b) with a supercritical fluid flow; (d) recuperating the particles of the interactive compound thus formed. The invention also concerns a compound obtainable by said method.

Abstract: A thermal protection device adapted to extend along a surface to be protected from a thermally and mechanically severe external environment, having an inside face adapted to face the surface to be protected and an outside face adapted to be exposed to the external environment, includes a composite layer containing a refractory armature buried in a thermally insulative material matrix, the device further including a ceramic, metal or metalloid external layer of which the outside face is part and which is attached to the composite layer.

Abstract: The present invention concerns a process for treating bone tissue of animal or human origin, and a corresponding implantable biomaterial. According to the present invention, a fluid in the supercritical state is caused to penetrate throughout the bone tissue. The bone tissue thus treated can then undergo stages of extracting specific proteins. This tissue is intended to be placed on a damaged bone tissue and has mechanical properties at least equivalent to those of natural bone.

Abstract: A thermal protection device (9) adapted to extend along a surface to be protected from a thermally and mechanically severe external environment, having an inside face (9A) adapted to face the surface to be protected and an outside face (9B) adapted to be exposed to the external environment, includes a composite layer (6) containing a refractory armature (2) buried in a thermally insulative material matrix, the device further including a ceramic, metal or metalloid external layer (7) of which the outside face is part and which is attached to the composite layer.

Abstract: A method for treating after its manufacture a textile structure containing at least one polymer of the poly (.alpha.-hydroxy-acids) family obtained by at least one step of mechanical assembly of textile fibers. The structure is contacted with a flow of a composition of at least one fluid in supercritical state. The invention also concerns a method for manufacturing a structure and the resulting structure.

Abstract: The present invention concerns a process for treating bone tissue of animal or human origin, and a corresponding implantable biomaterial. According to the present invention, a fluid in the supercritical state is caused to penetrate throughout the bone tissue. The bone tissue thus treated can then undergo stages of extracting specific proteins. This tissue is intended to be placed on a damaged bone tissue and has mechanical properties at least equivalent to those of natural bone.

Abstract: The invention concerns the use with the aim of antiviral prophylaxis of a current of carbon dioxide CO.sub.2 in the supercritical state in contact with a tissue having a collagenous network of human or animal origin intended to be used as or in an implantable supporting tissue prosthesis as a biomaterial, wherein carbon dioxide in the supercritical state has the function of eliminating viral contamination from the tissue.

Abstract: A process for producing a composite material part having a central hollow body with edge ailerons extending outwardly therefrom in which peripheral mandrels 1 are joined and a peripheral mandrels 1 then being turned round and pressed against a central mandrel 16 on which another filament has been wound. The filaments are impregnated and polymerized to form the desired part.

Abstract: Fertilizer containing microorganisms of the rhizosphere packaged by microencapsulation in a polysaccharide matrix. The inoculum obtained after microencapsulation can be mixed with a granular solid fertilizer, then stored, or with a liquid fertilizer immediately before spreading.