Abstract: A rigid foam or composition allowing a rigid foam to be obtained made from polyurethane and/or polyisocyanurate. The rigid foam or composition includes polyols selected from polyester polyols and polyether polyols; the polyols include: 5 to 50% of a polyester polyol A by weight relative to the total weight of the polyols; and a polyol B selected from polyester polyols B and polyether polyols B. The polyester polyol A is of general formula Rx-Ry-Z-Ry?-Rx? in which Z is a C3 to C8 alcohol sugar chosen from glycerol, sorbitol, erythritol, xylitol, araditol, ribitol, dulcitol, mannitol and volemitol. Ry and Ry? are diesters of formula —OOC—Cn-COO— in which n is between 2 and 34, and Rx and Rx? are identical or different C2 to C12 monoalcohols.

Abstract: A polyester polyol of formula produced by a first polycondensation (a) of a sugar alcohol Z in C3 to C8 and two diacids Y and Y? which are the same or different in C4 to C36, and a second polycondensation (b) of the product produced in (a) with two diols X and X? which are the same or different in C2 to C12, the polymer including such a polyester polyol. Also, a method for producing the polyester polyols and the use thereof in foams, adhesives, coatings or elastomers of polyurethane or polyisocyanurate.

Abstract: A rigid foam or composition allowing a rigid foam to be obtained made from polyurethane and/or polyisocyanurate. The rigid foam or composition includes polyols selected from polyester polyols and polyether polyols; the polyols include: 5 to 50% of a polyester polyol A by weight relative to the total weight of the polyols; and a polyol B selected from polyester polyols B and polyether polyols B. The polyester polyol A is of general formula Rx-Ry-Z-Ry?-Rx? in which Z is a C3 to C8 alcohol sugar chosen from glycerol, sorbitol, erythritol, xylitol, araditol, ribitol, dulcitol, mannitol and volemitol. Ry and Ry? are diesters of formula —OOC—Cn-COO— in which n is between 2 and 34, and Rx and Rx? are identical or different C2 to C12 monoalcohols.

Abstract: A process for producing a five-membered polycycloaliphatic carbonate including a step of reacting a suspension of a powdered sugar alcohol within a carbon dioxide source and a catalyst compound which is soluble in the carbon dioxide source at the reactional temperature. The invention also concerns a process for producing non-isocyanate polyurethane and/or a polycarbonate and/or polyethers including the step of obtaining a five-membered polycycloaliphatic carbonate according to the process for producing a five-membered polycycloaliphatic carbonate.

Abstract: One subject of the present invention is a roofing device (1) comprising an area support (2) made up of panels of wood particles on which a vapor barrier first layer (3), an insulating second layer (4) and a third layer (5) that is impermeable to liquid water are laid. Said device (1) is one wherein the second layer (4) is a composite layer formed by the superposition of two distinct homogeneous elementary layers (6 and 6?), namely a lower elementary layer (6) of wood fiber and an upper elementary layer (6?) made up of a material that is at least partially bio-sourced, that has hygroscopic, antifungal and thermal-insulation properties and that has a low resistance to the diffusion of water vapor.

Abstract: Disclosed is a binder of vegetable origin based on modified tall-oil pitch, modified vegetable resin and optionally oil. Also disclosed are leakproofing membrane compositions, soundproofing membrane compositions, liquid sealing system compositions, asphalt mix coating compositions, asphalt coating compositions, primer compositions, varnish compositions, mastic compositions, adhesive compositions or binder emulsion compositions which comprise said binder. In addition, a method is disclosed for reducing the amount of bitumen of petroleum origin in said compositions.

Abstract: Disclosed is a binder of vegetable origin based on oil, modified vegetable resin and optionally a heat stabilizer. Also disclosed are leakproofing membrane compositions, soundproofing membrane compositions, liquid sealing system compositions, asphalt mix coating compositions, asphalt coating compositions, primer compositions, varnish compositions, mastic compositions, adhesive compositions or binder emulsion compositions which comprise said binder. In addition, a method is disclosed for reducing the amount of bitumen of petroleum origin in said compositions.

Abstract: A flexible or semi-flexible foam, or a composition making it possible to obtain a flexible or semi-flexible foam, including a polyester polyol or a polymer comprising a polyester polyol. The polyester polyol is obtained by a first polycondensation (a) of an alcohol sugar Z in C3 to C8 and of two identical or different diacids Y and Y? in C4 to C36 and a second polycondensation (b) of the product obtained in (a) with two identical or different diols X and X? in C2 to C12.

Abstract: A rigid foam or a composition allowing a rigid foam to be obtained, including a polyester polyol or a polymer including a polyester polyol, the polyester polyol being obtained by a first polycondensation (a) of a C3 to C8 sugar alcohol Z and two identical or different C4 to C36 diacids Y and Y? and a second polycondensation (b) of the product obtained in (a) with two identical or different C2 to C12 diols X and X?.

Abstract: A polyester polyol of formula produced by a first polycondensation (a) of a sugar alcohol Z in C3 to C8 and two diacids Y and Y? which are the same or different in C4 to C36, and a second polycondensation (b) of the product produced in (a) with two diols X and X? which are the same or different in C2 to C12, the polymer including such a polyester polyol. Also, a method for producing the polyester polyols and the use thereof in foams, adhesives, coatings or elastomers of polyurethane or polyisocyanurate.

Abstract: The invention concerns a method (100) for recovering and/or recycling a bituminous product by means of pulsed power, the bituminous product comprising bitumen and elements to be separated, involving the following steps: supplying (101) a reactor (11) inside which at least two electrodes (13) extend with the bituminous product and a liquid medium of which at least one liquid component has Hansen solubility parameters ??, ?? and ?d such that the bitumen is at least partially soluble in the liquid medium, the elements to be separated being insoluble, generating (102) a series of electromagnetic pulses between the electrodes (13) in the reactor (11) so as to produce, as a result of the power, the frequency and the switching time of the electromagnetic pulses, at least one shock wave and at least ultraviolet radiation, in such a way as to disperse and dissolve the bitumen in the liquid medium, and to separate the bitumen and the insoluble elements, the liquid medium preventing the reconstitution of the bitumen.

Abstract: The invention concerns a method (100) for recovering and/or recycling a bituminous product by means of pulsed power, the bituminous product comprising bitumen and elements to be separated, involving the following steps: —supplying (101) a reactor (11) inside which at least two electrodes (13) extend with the bituminous product and a liquid medium of which at least one liquid component has Hansen solubility parameters ??, ?? and ?d such that the bitumen is at least partially soluble in the liquid medium, the elements to be separated being insoluble, —generating (102) a series of electromagnetic pulses between the electrodes (13) in the reactor (11) so as to produce, as a result of the power, the frequency and the switching time of the electromagnetic pulses, at least one shock wave and at least ultraviolet radiation, in such a way as to disperse and dissolve the bitumen in the liquid medium, and to separate the bitumen and the insoluble elements, the liquid medium preventing the reconstitution of the bitumen.

Abstract: The present invention relates to a polymerisable plasticiser formed by a hydrocarbon chain, one end of which bears more than one isocyanate function, said hydrocarbon chain comprising and/or being substituted by an aromatic ring and/or an aliphatic ring and/or said hydrocarbon chain is substituted by at least two hydrocarbon chains that can comprise an unsaturation, and the number of isocyanate functions being strictly greater than 1, preferably greater than 1.2, and, more preferably, grater than 1.5 but less than or equal to 2.2. The invention also relates to liquid polyurethane resin compositions and, in particular, stable, ready-to-use liquid polyurethane resin compositions comprising said plasticiser. The invention further relates to methods for replacing all or part of the exogenous plasticiser and/or solvent in a polyurethane resin by adding said polymerisable plasticiser.

Abstract: Disclosed are granules comprising an elastomeric polyurethane and bitumen, processes for preparing the granules in an extruder and to their use for preparing a bituminous binder, which may especially be used for producing prefabricated sealing membranes by depositing said bituminous binder onto a fibrous support.

Abstract: The invention relates to polyurethane resin compositions and, in particular, stable, ready-to-use polyurethane resin compositions comprising: a masked polyisocyanate having formula (I), wherein B represents alkyl and A represents a group comprising a number of isocyanate functions of between 1.5 and 2.2, preferably between 1.5 and 2.1 and, more preferably, between 1.5 and 2; or a masked pre-polymer that is the product of a reaction between the above-mentioned masked polyisocyanate and a polyol having between 1.5 and 3 OH functions and a molecular mass of between 900 and 3,000 g/mol, in a ratio such that the number of NCO functions of the masked polyisocyanate in relation to the number of OH functions of the polyol is between 1.5 and 2.5 approximately; or a mixture of the aforementioned masked polyisocyanate and masked pre-polymer.

Abstract: A polyurethane resin composition comprising a prepolymer and a polymerizable plasticizer, and which may also comprise at least one constituent chosen from the group comprising: a masked polyisocyanate; a diluent; bitumen or a bituminous mixture; and mixtures thereof, and uses thereof.

Abstract: A device for supporting and attaching panels to a roof including an added sealing covering on the surface thereof includes brackets for tiltedly supporting and bearing the panels, including a bottom bearing portion and at least one top portion for supporting the panels, the brackets having a triangular structure and consisting of a hollow body. The device is characterized in that the bottom portion (4) of the brackets (3) is provided, on the underside thereof, with at least one added plate (5) secured to the console (3), wherein the plate(s) (5) consist of a material or contain a material that is compatible with and/or similar to the layer or the surface coating of the roof covering (2), and are bonded to the layer or the covering by an adhesive bond, and in that the top portion (4?) provides bearing surfaces for the edges of the panels or profile members for mounting such panels.

Abstract: The invention relates to a diluent comprising: a polyisocyanate having a number of isocyanate functions strictly greater than 1 and less than or equal to 3.1; a bis-oxazolidine, and a catalyst, the amounts of bis-oxazolidine and of polyisocyanate having a number of isocyanate functions strictly greater than 1 and less than or equal to 3.1 being such that the molar ratio between the —NH functions of the bis-oxazolidine and the NCO functions is from 0.3 to 0.75; the —NH functions of the bis-oxazolidine being the —NH functions derived from the amine functions formed after opening of the bis-oxazolidine ring, said diluent not comprising any solvent or any exogenous plasticizer; to polyurethane resin compositions comprising said diluent and to the uses thereof.

Abstract: A polyurethane resin composition comprising a prepolymer and a polymerizable plasticizer, and which may also comprise at least one constituent chosen from the group comprising: a masked polyisocyanate; a diluent; bitumen or a bituminous mixture; and mixtures thereof, and uses thereof.

Abstract: A device for fixing elements in the form of plates to a roof cover for a building, at a distance therefrom, the cover including, on the surface, a coating or a sealing layer attached to the essentially continuous support forming the roof, the device including blocks that can be height-adjustable or not, for supporting and holding the plate-shaped elements, each block having a base with a lower smaller plate to be applied to the surface of the cover and secured thereto, and a head or upper part for directly or indirectly supporting at least one plate-shaped element, the bottom face of the smaller plate (9) of the base (8) of each block (7) being provided with a part (11) of the plate, forming a protector, which is mechanically fixed to the smaller plate (9).