Abstract:
The invention relates to an aqueous dispersion containing a polyurethane that is composed of: a) organic diisocyanates; b) dihydroxy compounds with a molecular weight of between 500 and 5000 g/mol, said compounds containing no ionic group or a group that can be converted into an ionic group; c) monovalent to trivalent alcohols, which in addition contain an ionic group; d) optionally other compounds that differ from a) to c). Said dispersion is characterised in that the polyurethane contains less than 0.6 wt. % carbamide groups, (calculated with a molecular weight of 56 g/mol), that the ionic group in c) is at least partially neutralised using an alkali cation and that compounds a), b), c) and d) are not converted in the presence of a catalyst containing a metal-carbon bond.
Abstract:
The present invention relates to a process for producing a water-absorbing material comprising the steps of a) spray-coating water-absorbing polymeric particles with an elastic film-forming polymer in a fluidized bed reactor in the range from 0°C to 1500°C and b) heat-treatment of the coated particles at a temperature above 50°C, wherein in step a) and/or b) an antioxidant is added and the water-absorbing material obtainable by this process.
Abstract:
The invention relates to thiocarbamides comprising at least one carbodiimide group and at least one thiocarbamide acid ester group of formula (I).
Abstract:
An aqueous dispersion of a polymer, formed from radically polymerisable compounds (monomers), is characterised in that the dispersed polymer particles contain compounds with carbodimide groups (carbodiimides for short) and that the carbodimides are not covalently bonded to the polymer by means of radical copolymerisation.
Abstract:
Procedimiento para la fabricación de 1, 3, 5 triazina carbamatos de la fórmula (1), de 1, 3, 5 triazina carbamatos de la fórmula (II), en la cual Y1 y Z1 son ambos o bien hidrógeno o Y1 es un grupo de la fórmula (CO)-O-R4 y Z1 un grupo de la fórmula (CO)-X1-R1, Y2 y Z2 son o bien ambos hidrógeno o Y2 es un grupo de la fórmula (CO)-O-R5 y Z2 un grupo de la fórmula (CO)-X2-R2, R1, R2, R3, R4, R5 y R6 son, respectivamente independientes entre sí, el resto de un alcohol o una amina, y X1, X2 y X3 son, respectivamente independientes entre sí, oxígeno o nitrógeno insustituido (NH), caracterizado porque la reacción se realiza con una temperatura de 40 hasta 120 °C y en presencia de al menos un catalizador, seleccionado de un grupo que abarca compuestos de estaño, sales de cesio, carbonatos (de hidrógeno) de metales alcalinos y aminas terciarias.
Abstract:
A cleaner composition which comprises at least one surfactant, at least one builder and at least one nitrogen-containing polymer is described. The nitrogen-containing polymer is, for example, an alkoxylated polyvinylamine, an alkoxylated, acylated or alkylated polyaminoamide or a polyurethane-urea with tertiary amino groups. The nitrogen-containing polymers facilitate soil release.
Abstract:
A cleaner composition which comprises at least one surfactant, at least one builder and at least one nitrogen-containing polymer is described. The nitrogen-containing polymer is, for example, an alkoxylated polyvinylamine, an alkoxylated, acylated or alkylated polyaminoamide or a polyurethane-urea with tertiary amino groups. The nitrogen-containing polymers facilitate soil release.
Abstract:
Thermoplastic molded materials comprises: 10-98.9 wt.% of at least one thermoplastic polyester, 0.01-50 wt.% of at least one highly- or hyper-branched polycarbonate with hydroxyl-number of 1-600 mg of potassium hydroxide/g polycarbonate and/or at least one highly-or hyper-branched polyester, 0.1-10 wt.% of at least one carbodiimide and 0-60 wt.% of additives, where the sum of the weight percentage of the components is 100%. Thermoplastic molded materials comprises: 10-98.9 wt.% of at least one thermoplastic polyester, 0.01-50 wt.% of at least one highly-or hyper-branched polycarbonate with hydroxyl-number of 1-600 mg of potassium hydroxide/g polycarbonate (according to DIN 53240, part 2) and/or at least one highly- or hyper-branched polyester of type A xB y, 0.1-10 wt.% of at least one carbodiimide and 0-60 wt.% of additives, where the sum of the weight percentage of the components is 100%. x = at least 1.1; and y = at least 2.1. An independent claim is included for fibers, foils and molded articles obtained from the thermoplastic molded materials.
Abstract:
Aqueous dispersions for hydrolysis resistant coatings containing a polyurethane synthesized from di isocyanates, diols, various monomers, if required further different monovalent compounds and different monovalent compounds from monomers. Aqueous dispersions for hydrolysis resistant coatings containing a polyurethane synthesized from (a) di isocyanates,(b) diols, of which (b1) 10-100 mole% on the diol (b) have a molecular weight of 500-5000 g/mole, and (b2) 0-90 mole% on diol (b) having a molecular weight of 60-500 g/mole, (c) various monomers from monomers (a) and (b), having at least one isocyanate group or at least one group reactive to isocyanates, and at least one hydrophilic group, or a potentially hydrophilic group, imparting water dispersibility to the polyurethane, (d) if required further different monovalent compounds from (a) and (b) having reactive groups, i.e. alcoholic OH groups, primary or secondary amine groups, or isocyanate groups, and (e) if required different monovalent compounds from monomers (a) and (b) containing a reactive group, obtained by reaction of monomers a, b, and c, and optionally d and e in the presence of organometallic catalysts at a temperature of 100 -180 degrees C and mean reaction times of 1-20 hours. Independent claims are included for: (1) a process for preparation of the aqueous dispersions containing a polyurethane as under (a) to (e) above; (2) an object coated, bonded, or impregnated with the aqueous dispersion; (3) a process for coating objects in metal, synthetic plastic, paper, textiles, leather, and wood, by application of a film from an aqueous dispersion and drying of the film; (4) a process for adhesive bonding of objects in metal, synthetic plastic, paper, textiles, leather, or wood, in which an aqueous dispersion is applied as a film, and is joined to another object before or after drying; and (5) a process for impregnation of objects in textiles, leather. or paper, in which the object is steeped in the aqueous solution and dried.