Abstract:
Polyester polyol containing the esterification product of a) 10 to 70 mol-% of a dicarboxylic acid composition containing a1) from 50 to 100 mol-% of a terephthalic acid-based material selected from terephthalic acid, dimethyl terephthalate and polyalkylene terephthalate and mixtures thereof, a2) 0 to 50 mol-% of phthalic acid, phthalic acid anhydride or isophthalic acid, a3) 0 to 50 mol-% of one or more dicarboxylic acids, b) 2 to 30 mol-% of one or more fatty acids and/or fatty acid derivatives and/or benzoic acid, c) 10 to 70 mol-% of one or more aliphatic or cycloaliphatic diols with 2 to 18 C atoms or alkoxylates thereof, d) 2 to 50 mol-% of a highly functional polyol selected from the group consisting of glycerin, alkoxylated glycerin, trimethylol propane, alkoxylated trimethylol propane, pentaerythritol and alkoxylated pentaerythritol, wherein at least 200 mmol, preferably at least 500 mmol and especially preferred at least 800 mmol of polyols d) with an OH functionality of = 2.9 are converted per kg of polyester polyol.
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 present invention concerns a process for the production of composite elements comprising plastic, adhering to which there is a polyisocyanate polyaddition product, where isocyanate is mixed with compounds having groups reactive toward isocyanates, catalysts, if appropriate, blowing agent, and if appropriate, further additives to give a reaction mixture and the reaction mixture is permitted to complete its reaction to give the polyisocyanate polyaddition product, where the compounds having groups reactive toward isocyanates comprise a polyester polyalcohol as adhesion promoter, capable of production via polycondensation of an acid component and of one or more low-molecular-weight diols whose molar mass is less than 500 g/mol, in excess, where the low-molecular-weight diols comprise at least 5 to 66 mol% of 1,3-propanediol, based on the total amount of the diol.
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 obtención de espumas duras de poliuretano mediante reacción de a) poliisocianatos con b) compuestos con al menos dos átomos de hidrógeno reactivos con grupos isocianato en presencia de c) agentes propulsores, caracterizado porque el componente b) presenta al menos un alcohol de poliéster bi) con una funcionalidad de 1,5 a 4,5 y un índice de hidroxilo en el intervalo entre 200 y 800 mg KOH/g, para cuya obtención se empleó al menos un ácido carboxílico alifático, al menos difuncional, al menos un alcohol alifático, al menos difuncional, así como al menos un aceite vegetal, y/o al menos un ácido graso.
Abstract:
El poliol de poliéster que contiene el producto de esterificación de a) 10 a 70% mol de una composición de ácido dicarboxílico que contiene a1) desde 50 hasta 100% mol de un material basado en ácido tereftálico seleccionado de ácido tereftálico, dimetil tereftalato y polialquilentereftalato y mezclas de los mismos, a2) 0 a 50% mol de ácido ftálico, anhídrido del ácido ftálico o ácido isoftálico, a3) 0 a 50% mol de uno o más ácidos dicarboxílicos, b) 2 a 30% mol de uno o más ácidos grasos y/o derivados de ácidos grasos y/o ácido benzoico, c) 10 a 70% mol de uno o más dioles alifáticos o cicloalifáticos con 2 a 18 átomos de C o alcoxilatos de los mismos, d) 2 a 50% mol de un poliol altamente funcional seleccionado del grupo que consiste de glicerina, glicerina alcoxilada, trimetilol propano, trimetilol propano alcoxilado, pentaeritritol y pentaeritritol alcoxilado, en donde al menos 200 mmol, preferiblemente al menos 500 mmol y especialmente preferido al menos 800 mmol de los polioles d) con una funcionalidad de OH de = 2.9 se convierten por kg de poliol de poliéster.