Abstract:
Die vorliegende Erfindung betrifft eine Zusammensetzung zur Beschichtung von metallischen Oberflächen enthaltend eine Bindemittelkomponente; ein Korrosionsinhibitorpolymer auf Basis einer ethylenischen Mono- und Dicarbonsäure und gegebenenfalls weiterer ethylenischer Monomeren, eine Lösemittelkomponente und gegebenenfalls vernetzbare Komponenten sowie Pigment-/Füllstoffkomponenten. Die Erfindung betrifft weiterhin Verfahren zu deren Herstellung sowie Verfahren zum Beschichten einer metallischen Oberfläche mit Hilfe der Zusammensetzung, so erhaltene beschichtete metallische Oberflächen und die Verwendung der Zusammensetzung als Grundierlack, insbesondere beim Coil Coating oder im atmosphärischen Korrosionsschutz. Nach dem Trocknen weist die aufgebrachte Schicht vorzugsweise eine Dicke von mindestens 3,1 µm auf und ist somit dicker als eine übliche Vorbehandlungsschicht.
Abstract:
The invention relates to superabsorbing foam which contains 0.01 wt. % - 10 wt. % of fibres which are made of wood pulp or waste paper, in relation to the dry weight of the foam.
Abstract:
Verfahren zur Reinigung von Oberflächen unter Verwendung von Aminoplastschaumstoffstücken, hergestellt aus (a) offenzelligen Aminoplastschaumstoffen mit einer Dichte im Bereich von 5 bis 500 kg/m 3 und einem mittleren Porendurchmesser im Bereich von 1 µm bis 1 mm oder (b) offenzelligen Aminoplastschaumstoffen mit einer Dichte im Bereich von 5 bis 500 kg/m 3 und einem mittleren Porendurchmesser im Bereich von 1 µm bis 1 mm, die man behandelt hat (b1) mit wässriger Formulierung von mindestens einer Verbindung (b-1) mit mindestens einer Halbaminal- oder Aminalgruppe pro Molekül oder mindestens einem Copolymer, das mindestens ein OH-gruppenhaltiges oder β-Dicarbonylgruppenhaltiges oder Epoxidgruppenhaltiges Comonomer einpolymerisiert enthält, oder (b2) mit mindestens einem bei Zimmertemperatur festem Carboxylgruppen-haltigen und/oder Carbonsäureestergruppen-haltigen Polymerisat (c-1) mit einem Molekulargewicht M n im Bereich von 1.000 bis 1.000.000 g/mol, wobei die verwendeten Aminoplastschaumstoffstücke einen mittleren Durchmesser im Bereich von 0,1 mm bis 50 mm aufweisen.
Abstract:
A process for the reduction of the residual monomer content and enhancement of the wet strength of articles formed from water absorbent crosslinked polymer foams containing units derived from monoethylenically unsaturated acids, which comprises treating the formed articles with at least 0.5% by weight of a polymer containing primary and/or secondary amino groups and having a molar mass of at least 300, the formed foam articles thus obtainable and use of the wet strength enhanced formed foam articles in hygiene articles.
Abstract:
The invention concerns water-absorbent cross-linked polymers in foam form which are obtained by: (I) foaming a polymerizable aqueous mixture which comprises: (a) monoethylenically unsaturated monomers which contain acid groups and are neutralized to at least 50 mol %; (b) optionally other monoethylenically unsaturated monomers; (c) cross-linking agents; (d) initiators; (e) between 0.1 and 20 wt % of at least one surfactant; (f) optionally at least one solubilizer; and (g) optionally thickening agents, foam stabilizers, polymerization regulators, fillers and/or cell nucleating agents; foaming occurring by dispersing fine bubbles of a gas which is inert with respect to radicals; and (II) polymerizing the foamed mixture, forming a foam-form hydrogel and optionally adjusting the water content of the foam-form polymer to between 1 and 60 wt %. The invention further concerns a process for preparing these polymers and their use in sanitary articles which are used to absorb body fluids, and in bandaging material for covering wounds.
Abstract:
A process is disclosed for preparing aspartic acid polycondensates. Finely dispersed aspartic acid is heated up to a temperature of at least 150 DEG C and polycondensation is carried out in the presence of a cocondensable monomer that contains at least one functional group and of acid catalysts so that the catalysts and if required the co-condensable monomers contact the aspartic acid, heated up to a temperature of at least 150 DEG C, only in the reaction zone in which polycondensation takes place.
Abstract:
The invention provides aqueous solutions or dispersions of copolymers obtained by copolymerising (a) 20 to 95 mol.% of at least one monoethylenically unsaturated C4-C12 dicarboxylic acid or its anhydride; (b) 5 to 80 mol.% of at least one branched chain oligomer or polymer with a vinyl, vinylidene or alkylvinylene end group made up of at least 9 C atoms; and (c) 0 to 50 mol.% of at least another monoethylenically unsaturated compound capable of being polymerised with monomers (a) and (b). These aqueous solutions or dispersions contain 0.5 to 70 % by weight of these copolymers in relation to their total weight. They are useful as leather auxiliary and pigment dispersing agents.
Abstract:
The invention concerns a process for preparing fine-particle mixtures comprising between 97 and 10 wt % of at least one amphiphilic polymer whose softening temperature is above 35 DEG C, and between 3 and 90 wt % of at least one inorganic solid having a particle size of up to at most 500 mu m. According to this process the two components are heated to a temperature which is above the softening temperature of the polymer. The two components are then mixed, broken down in the molten state and rapidly cooled, to a temperature at which practically no separation occurs. The particles are optionally broken down further at temperatures of less than 50 DEG C such that the particle size is between 50 mu m and 5 mm. The invention further concerns the use of these mixtures as detergent additives.
Abstract:
Biodegradable polyesters P1 obtainable by the reaction of a mixture consisting essentially of (a1) a mixture essentially of 35 to 95 mol% adipic acid or ester-forming derivatives thereof or mixtures thereof, 5 to 65 mol% terephthalic acid or ester-forming derivatives thereof or mixtures thereof, and 0 to 5 mol% of a sulphonate group-containing compound in which the sum of the individual mol percentages is 100, and (a2) a dihydroxy compound selected from the group consisting of C2-C6 alkane diols and C5-C10 cycloalkane diols, in which the molar ratio of (a1) and (a2) is in the range from 0.4:1 to 1.5:1, provided that the polyester P1 have a molecular weight (Mn) in the range from 5000 to 50,000 g/mol, a viscosity index in the range from 30 to 350 g/ml (measured in o-dichlorobenzole/phenol (in a ratio by weight of 50/50) at a concentration of 0.5 wt.% polyester P1 at a temperature of 25 DEG C) and a melting point in the range from 50 to 170 DEG C, and with the further proviso that from 0.01 to 5 mol% in relation to the molar quantity of the component (a1) used of compound D with at least three groups capable of forming esters are used to produce the polyesters P1, and other biodegradable polymers and thermoplastic moulding compounds and adhesives, biodegradable mouldings, foams and blends with starch obtainable from the polymers or moulding compounds of the invention.
Abstract:
The use of polyasparaginic acid, produced by the polycondensation of asparaginic acid in the presence of phosphoric acid in a molar ratio of 1:0.5 to 1:10 at temperatures of at least 120 DEG C into polysuccinimide and the subsequent hydrolysis of the polysuccinimide with bases to at least partialy neutralised polyasparaginic acid as an additive to washing and cleaning agents in quantities of 0.1 to 10 wt %, and washing and cleaning agents containing polyasparaginic acid produced in the presence of phosphoric acid.