Abstract: Use of copolymers (C) comprising at least one epoxy group and at least one alkoxysilane group as stabilizers for polymers (P), where the copolymers (C) are generally obtained via polymerization of monomers and said monomers comprise those that comprise epoxy groups or alkoxysilane groups or epoxy groups and alkoxysilane groups, or that are reacted during or after polymerization and, after the reaction, comprise epoxy groups or alkoxysilane groups, or epoxy groups and alkoxysilane groups. Processes for stabilizing polymers (P) with respect to hydrolysis, which comprise adding, to the polymers (P), an effective amount of copolymers (C). Copolymers (C?) composed of specific compositions of monomers comprising at least one epoxy group and at least one alkoxysilane group, and also optionally other monomers. Mixtures comprising copolymers (C?) and polymers (P).

Abstract: This invention relates to a process for stabilizing polymers with oligomeric carbodiimides containing at least one heterocyclic end group and stabilizers. The oligomeric carbodiimides may be compounds of the general formula (I): where A1, A2 are each independently, identically or differently, hydrocarbon groups having 2 to 20 carbon atoms, B1, B2 are each independently, identically or differently, heterocycles, C1-C30-alcohols, polyetherols, polyesterols, amines, polyether amines, polyester amines, thioalcohols, polyether thiols, polyester thiols; R1, R2 are each independently, identically or differently: n is an integer from 2 to 100, and A1, A2, B1 and B2 may each be substituted at any desired position by C1-C20-alkyl, C2-C20-alkenyl, C2-C20-alkynyl, C1-C20-alkoxy, carbonyl oxygen (?O) or halogen, with the proviso that at least one B1 or B2 substituent is a heterocyclic end group. The invention also relates to compositions of the oligomeric carbodiimides and mixtures.

Abstract: A mixture comprising at least one polyfunctional chain extender having at least three reactive groups, and at least one mono- or difunctional hydrolysis stabilizer, where the chain extenders and the hydrolysis stabilizers react with the terminal groups of polymers in the molten or solid state of the polymers to form a chemical bond. Use of such mixtures as stabilizers for polymers. Methods for stabilizing polymers with respect to molecular weight loss, where an effective amount of such a mixture is added to the polymer.

Abstract: Oligomeric carbodiimides comprising at least one heterocyclic end group are used as stabilizers for polymers. The oligomeric carbodiimides may be compounds of the general formula (I), where A1, A2 are each independently, identically or differently, hydrocarbon groups having 2 to 20 carbon atoms, B1, B2 are each independently, identically or differently, heterocycles, C1-C30-alcohols, polyetherols, polyesterols, amines, polyether amines, polyester amines, thioalcohols, polyether thiols, polyester thiols, R1, R2 are each independently, identically or differently, n is an integer from 2 to 100, and wherein A1, A2, B1 and B2 may each be substituted at any desired position by C1-C20-alkyl, C2-C20-alkenyl, C2-C20-alkynyl, C1-C20-alkoxy, carbonyl oxygen (?O) or halogen, with the proviso that at least one B1 or B2 substituent is a heterocyclic end group. Processes for stabilizing polymers against hydrolysis using oligomeric carbodiimides are also disclosed.

Abstract: A hydrogel having a floatability where from 40% to 90% of a solution and/or suspension to be thickened are thickened starting from the surface of the liquid and the rest of the solution and/or suspension to be thickened is thickened starting from the bottom of the container, a process for preparing the hydrogel and also its use for absorbing blood and/or body fluids, especially in hygiene articles, or for thickening aqueous solutions and/or suspensions, especially for thickening medical wastes.

Abstract: A process for producing water-absorbing polymeric particles by dropletization polymerization in the gas phase, which comprises drying the polymeric particles after the polymerization in a fluidized bed, the water-absorbing polymeric particles themselves, hygiene articles comprising these water-absorbing polymeric particles and also apparatus for implementing the process.

Abstract: A process for producing water-absorbing polymeric particles by dropletization polymerization in the gas phase, which comprises drying the polymeric particles after the polymerization in a fluidized bed, the water-absorbing polymeric particles themselves, hygiene articles comprising these water-absorbing polymeric particles and also apparatus for implementing the process.

Abstract: A process for producing an absorbent composite by contacting a solid supporting material with an emulsion comprising at least one polymeric material and at least one crosslinker and curing the mixture on the supporting material, the absorbent composites and also their use in sealing materials for road, tunnel and water engineering and also for excavations, high water protection and roof-sealing systems.

Abstract: The invention relates to a printable composition having a viscosity of 1-1000 mPas and comprising a) 5-50% by weight of superabsorbent polymeric particles, b) 10-40% by weight of at least one organic, water-insoluble binder, c) 0-10% by weight of at least one additive and d) 40-80% by weight of at least one organic solvent. The invention further relates to sheetlike materials printed with the printable composition on at least one surface. The invention further relates to the use of the printed sheetlike materials for food packaging, for packaging moisture-sensitive goods, for moisture control in rooms, or as a membrane in textiles.

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: A hydrogel having a floatability where from 40% to 90% of a solution and/or suspension to be thickened are thickened starting from the surface of the liquid and the rest of the solution and/or suspension to be thickened is thickened starting from the bottom of the container, a process for preparing the hydrogel and also its use for absorbing blood and/or body fluids, especially in hygiene articles, or for thickening aqueous solutions and/or suspensions, especially for thickening medical wastes.

Abstract: The present invention relates to polymerized hydrogels and processes to make such hydrogels, in particular hydrogel adhesives which are capable of attaching to mammalian skin and can be used in various personal care products, such as waste-management articles, and a variety of functional articles to be worn by a human. The hydrogels described herein are characterized by very low amount of residual starting monomers, impurities, and/or by-products that could be formed during polymerization. Specifically, the hydrogels are made by adding scavengers and/or chain transfer agent prior to polymerization. It has been found, that upon addition of same scavengers the material properties of the polymerized hydrogel differ from the properties of gels polymerized without the scavenger. This is due to the fact, that these specific scavengers act also as chain transfer agents in the radical polymerization.

Abstract: The present invention relates to hydrogel adhesives which are capable of attaching to mammalian skin, exhibit excellent attachment and painless removal properties, and which show excellent stability upon storage at room temperature or even at elevated temperatures and for longer periods of time. The adhesive hydrogel described in the present invention can be used as body adhesive in products for e.g. personal care, medical devices, beauty care and a variety of functional articles to be worn by a human. The hydrogel adhesive of the invention comprises 10-60 wt. % of a cross-linked hydrophilic polymer, 5-80 wt. % of a water-soluble non-ionic humectant, and from about 10-85 wt.

Abstract: The invention relates to a method of producing discrete patterns of an adhesive coating on a substrate, comprising the following steps: (a) the substrate is moved continuously or discontinuously in a conveying direction, (b) in an application zone a low-viscosity polymerizable and/or crosslinkable precursor material of an adhesive material is applied two-dimensionally to the substrate through at least one opening of substantially slotlike configuration of at least one movable applicator, a pattern being produced by movement of the applicator relative to the substrate, (c) downstream of the application zone the applied precursor material is polymerized and/or crosslinked.

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: Described is a water-absorbent composition containing from 30 to 100% by weight, based on the water-absorbent composition, of water-insoluble water-swellable hydrogels characterized by the following features: Centrifuge Retention Capacity (CRC) of at least 24 g/g, Saline Flow Conductivity (SFC) of at least 80×10?7 cm3 s/g and Free Swell Rate (FSR) of at least 0.15 g/g s and/or Vortex Time of not more than 160 s.

Abstract: The present invention relates to a process for making polymerized hydrogel, in particular adhesives, which are characterized by very low amount of residual starting monomer(s), impurity(s) and/or by-products which could be formed during polymerization, such as acrylamide, acrylonitrile or acrolein.

Abstract: The present invention relates to polymerized hydrogel adhesives, in particular those wherein the hydrogel is formed from monomers which include acrylamido-2-methane propanesulfonic acid or salts thereof (AMPS monomers) and those which contain glycerol as a humectant. In such adhesives, the levels of unpolymerized residual monomers, such as unpolymerized AMPS, acrylonitrile, acrylamide and t-butyl acrylamide; and the levels of other impurities such as acrolein, are kept very low.

Abstract: Liquid-absorbent polymers are prepared by a process for the gel and/or surface postcrosslinking of water-absorbent polymers by the polymer being treated with a surface postcrosslinking solution and being postcrosslinked and dried during and after the treatment by raising the temperature, wherein the crosslinker comprises a compound of the formula I where R1 is hydrogen, C1-C4-alkyl, C1-C4-hydroxyalkyl, trialkylsilyl or acetyl and R2, R2′, R3, R3′, R4, R4′ are each independently hydrogen, C1-C12-alkyl, C2-C12-alkenyl or C6-C12-aryl, dissolved in an inert solvent, and are used in hygiene articles, packaging materials and nonwovens.

Abstract: Liquid-absorbent polymers are prepared by a process for the gel and/or surface postcrosslinking of water-absorbent polymers by the polymer being treated with a surface postcrosslinking solution and being postcrosslinked and dried during and after the treatment by raising the temperature, wherein the surface postcrosslinking solution comprises as crosslinker a compound of the formula I where R1, R2, R3 and R4 are independently hydrogen, C1-C12-alkyl, C1-C12-alkenyl, C6-C12-aryl or C1-C12-alkoxy, R5 is C1-C16-alkyl, C1-C4-hydroxyalkyl, C6-C12-aryl, C1-C16-alkenyl or a group of the formula —(CH2)n—COOH or —(CH2)n—SO3H in the form of the acid or a respective metal salt, ammonium salt or triethanolammonium salt thereof or —(CH2—CH2—O—)m—R6, R6 is hydrogen or C1-C16-alkyl, n is from 1 to 10, m is from 1 to 20 dissolved in an inert solvent, and are used in hygiene articles, packaging materials and nonwovens.