Abstract:
The present invention relates to composite elements comprising (i) plastic, adhering to which there is (ii) a polyisocyanate polyaddition product, where the polyisocyanate polyaddition product is obtained by mixing (a) isocyanate with (b) compounds having groups reactive toward isocyanates, (c) catalysts, (d) if desired, blowing agent, and (e) if desired, further additives, to give a reaction mixture, and permitting the reaction mixture to complete its reaction to give the polyisocyanate polyaddition product, where the compounds (b) having groups reactive toward isocyanates comprise a polyester polyalcohol as adhesion promoter, which can be prepared by polycondensation of an acid component and of one or more low-molecular-weight diols whose molecular weight is less than 500 g/mol, in excess, where the acid component comprises 83 to 97 mol% of adipic acid and 3 to 17 mol% of phthalic acid, isophthalic acid and/or terephthalic acid. The present invention further relates to composite elements comprising (i) plastic, adhering to which there is (ii) a polyisocyanate polyaddition product, where the polyisocyanate polyaddition product is obtained by mixing (a) isocyanate with (b) compounds having groups reactive toward isocyanates, (c) catalysts, (d) if desired, blowing agent, and (e) if desired, further additives, to give a reaction mixture, and permitting the reaction mixture to complete its reaction to give the polyisocyanate polyaddition product, where the compounds (b) having groups reactive toward isocyanates comprise a polyester polyalcohol as adhesion promoter, preparable by polycondensation of an acid component and one or more low-molecular-weight diols having a molecular weight of less than 500 g/mol, in excess, the low-molecular-weight diols containing 5 to 66 mol% of 1,3-propanediol, based on the total amount of the diol. The present invention also relates to a process for the production of these composite elements, and to components in the fitting-out of aircraft, of vehicles, or of buildings, and to insulation systems comprising this type of composite element.
Abstract:
The invention relates to a component which is at least partly made of a layer structure. The layer structure comprises the following layers: (a) an elastomer layer with a density of more than 800 g/L, and (b) a duromer layer containing at least 50 wt.% of a first polyurethane. The invention further relates to a method for producing such a component, having the following steps: (i) providing a negative mold, into which the individual layers of the layer structure are introduced, or a positive mold, onto which the individual layers of the layer structure are applied, (ii) producing the elastomer layer by means of a spraying process, (iii) producing the duromer layer by means of a spraying process, and (iv) removing the produced component, wherein step (ii) can be carried out before step (iii) or step (iii) can be carried out before step (ii).
Abstract:
Pieza, constituida al menos parcialmente por una estructura de capas, donde la estructura de capas comprende las siguientes capas: (a) una capa de elastómero con una densidad de más de 800 g/L, (b) una capa de material termoestable, que contiene al menos un 50 % en peso de un primer poliuretano, donde la capa de elastómero presenta una dureza Shore según la DIN ISO 7619-1:2010 de menos de 95 Shore A.
Abstract:
Procedimiento para la reparación de capas de cubierta para carreteras, caminos y otras superficies para el tráfico, en el que se aplica un material polimérico en una cantidad de al menos 20 g/m2 sobre el sitio dañado, se aplica una primera mezcla de reacción de poliuretano en una cantidad de al menos 80 g/m2 sobre el material polimérico y se aplica una mezcla, que contiene aditivo mineral y una segunda mezcla de reacción de poliuretano, sobre la primera mezcla de reacción de poliuretano y se deja curar.
Abstract:
The present invention relates to a process for production of artificial leather comprising top coat polyurethane layer and optional substrate layer said process comprising i)providing a release layer ii)applying one or more than one layer of a top coat to the release layer to an overall top coat layer thickness in the range from 1 to 500 µm iii)applying first polyurethane system components comprising an isocyanate component (A) and a polyol component (B) to the top coat to form a first polyurethane layer wherein the isocyanate index of the first polyurethane system components is in the range from 101 to 140 iv) optionally applying further polyurethane system components to the first polyurethane layer to form further polyurethane layers v)optionally applying a substrate layer to the polyurethane system components vi)curing the polyurethane system components to form a polyurethane layer and vii)separating the release layer from the top coat wherein the overall thickness of the first and optionally further polyurethane layers is in the range from 0.01 to 20 mm and the polyurethane system components are solvent free. The present invention further relates to an artificial leather obtainable by such a process and to the use of the artificial leather as upper materials for footwear.
Abstract:
The present invention relates to composite elements comprising (i) plastic, adhering to which there is (ii) a polyisocyanate polyaddition product, where the polyisocyanate polyaddition product is obtained by mixing (a) isocyanate with (b) compounds having groups reactive toward isocyanates, (c) catalysts, (d) if desired, blowing agent, and (e) if desired, further additives, to give a reaction mixture, and permitting the reaction mixture to complete its reaction to give the polyisocyanate polyaddition product, where the compounds (b) having groups reactive toward isocyanates comprise a polyester polyalcohol as adhesion promoter, which can be prepared by polycondensation of an acid component and of one or more low-molecular-weight diols whose molecular weight is less than 500 g/mol, in excess, where the acid component comprises 83 to 97 mol% of adipic acid and 3 to 17 mol% of phthalic acid, isophthalic acid and/or terephthalic acid. The present invention further relates to composite elements comprising (i) plastic, adhering to which there is (ii) a polyisocyanate polyaddition product, where the polyisocyanate polyaddition product is obtained by mixing (a) isocyanate with (b) compounds having groups reactive toward isocyanates, (c) catalysts, (d) if desired, blowing agent, and (e) if desired, further additives, to give a reaction mixture, and permitting the reaction mixture to complete its reaction to give the polyisocyanate polyaddition product, where the compounds (b) having groups reactive toward isocyanates comprise a polyester polyalcohol as adhesion promoter, preparable by polycondensation of an acid component and one or more low-molecular-weight diols having a molecular weight of less than 500 g/mol, in excess, the low-molecular-weight diols containing 5 to 66 mol% of 1,3-propanediol, based on the total amount of the diol. The present invention also relates to a process for the production of these composite elements, and to components in the fitting-out of aircraft, of vehicles, or of buildings, and to insulation systems comprising this type of composite element.
Abstract:
Procedimiento para la producción de cuero artificial que comprende un recubrimiento superior, una capa de poliuretano y una capa de sustrato opcional, comprendiendo dicho procedimiento i) proporcionar una capa de liberación, ii) aplicar una o más de una capa de un recubrimiento superior a la capa de liberación hasta un grosor de capa de recubrimiento superior global en el intervalo de entre 1 y 500 μm, iii) aplicar primeros componentes del sistema de poliuretano que comprenden un componente de isocianato (A) y un componente de poliol (B) al recubrimiento superior para formar una primera capa de poliuretano, en el que el componente de isocianato (A) comprende prepolímeros de poliisocianato que tienen un contenido de NCO en el intervalo de entre el 10 y el 25% en peso, el componente de poliol /B) comprende un polieterol y/o poliesterol y en el que el índice de isocianato de los primeros componentes del sistema de poliuretano está en el intervalo de entre 101 y 140, iv) aplicar opcionalmente componentes del sistema de poliuretano adicionales a la primera capa de poliuretano para formar capas de poliuretano adicionales, v) aplicar opcionalmente una capa de sustrato a los componentes del sistema de poliuretano, vi) curar los componentes del sistema de poliuretano para formar una capa de poliuretano, y vii) separar la capa de liberación del recubrimiento superior, en el que el grosor global de la primera y opcionalmente capas de poliuretano adicionales está en el intervalo de entre 0,01 y 20 mm y los componentes del sistema de poliuretano están libres de disolvente.
Abstract:
The present invention relates to composite elements comprising (i) plastic, adhering to which there is (ii) a polyisocyanate polyaddition product, where the polyisocyanate polyaddition product is obtained by mixing (a) isocyanate with (b) compounds having groups reactive toward isocyanates, (c) catalysts, (d) if desired, blowing agent, and (e) if desired, further additives, to give a reaction mixture, and permitting the reaction mixture to complete its reaction to give the polyisocyanate polyaddition product, where the compounds (b) having groups reactive toward isocyanates comprise a polyester polyalcohol as adhesion promoter, which can be prepared by polycondensation of an acid component and of one or more low-molecular-weight diols whose molecular weight is less than 500 g/mol, in excess, where the acid component comprises 83 to 97 mol% of adipic acid and 3 to 17 mol% of phthalic acid, isophthalic acid and/or terephthalic acid. The present invention further relates to composite elements comprising (i) plastic, adhering to which there is (ii) a polyisocyanate polyaddition product, where the polyisocyanate polyaddition product is obtained by mixing (a) isocyanate with (b) compounds having groups reactive toward isocyanates, (c) catalysts, (d) if desired, blowing agent, and (e) if desired, further additives, to give a reaction mixture, and permitting the reaction mixture to complete its reaction to give the polyisocyanate polyaddition product, where the compounds (b) having groups reactive toward isocyanates comprise a polyester polyalcohol as adhesion promoter, preparable by polycondensation of an acid component and one or more low-molecular-weight diols having a molecular weight of less than 500 g/mol, in excess, the low-molecular-weight diols containing 5 to 66 mol% of 1,3-propanediol, based on the total amount of the diol. The present invention also relates to a process for the production of these composite elements, and to components in the fitting-out of aircraft, of vehicles, or of buildings, and to insulation systems comprising this type of composite element.