Abstract:
PROBLEM TO BE SOLVED: To provide a flexible absorbing sheet material containing an acidic water-absorbing resin, a basic water-absorbing resin and a plasticizer, and to provide a method of manufacturing the sheet material. SOLUTION: The sheet contains about 60 to 100 mass% of the acidic and basic water-absorbing resins and the plasticizer. The absorbing sheet has unexpected flexibility and structural integrity, while the sheet has excellent water-absorbency and water-retention. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
A superabsorbent having superior permeability and conveying properties comprises a permeability enhancing agent and a cohesion control agent and has a free swell gel bed permeability of at least 15 Darcies and a Hausner ratio in the range of 1.18 to 1.34.
Abstract:
Superabsorbent polymer particles having a transient hydrophobicity, excellent gel integrity, and free swell gel bed permeability are disclosed. A method of producing the superabsorbent polymer particles by applying a polyamine coating and a cosolvent to the particles also is disclosed.
Abstract:
The invention relates to water-absorbing polymer particles with improved colour stability and to processes for preparing them, the water-absorbing polymer particles comprising at least one optical brightening agent.
Abstract:
The invention relates to a method for producing water-absorbing polymer particles, wherein at least one aliphatic aldehyde or the conversion product thereof has an aliphatic alcohol, an aliphatic amine, ammonia, a hypophosphite, or a phosphite added thereto.
Abstract:
The invention relates to a method for the restabilization of (meth)acrylic monomers, whereby phenothiazine is removed from phenothiazine-containing (meth)acrylic monomers by adsorption on activated carbon and optionally subsequent addition of a moderately effective polymerization inhibitor.
Abstract:
Superabsorbents containing a compound of formula (I) where M represents a hydrogen atom, an ammonium ion, a monovalent metal ion or one equivalent of a divalent metal ion of groups 1, 2, 8, 9, 10, 12 or 14 of the periodic table; R1 represents OH or NR4R5, where R4 and R5 independently represent H or C1-C6-alkyl; R2 represents H or an alkyl, alkenyl, cycloalkyl or aryl group which optionally has 1, 2 or 3 substituents selected independently from C1-C6-alkyl, OH, O-C1-C6-alkyl, halogen and CF3; and R3 represents COOM, SO3M, COR4, CONR4R5 or COOR4, where M, R4 and R5 are each as defined above, or, when R2 represents aryl which is optionally substituted as indicated above, also represents H, salts thereof or mixtures of such compounds and/or salts thereof display improved stability to discoloration in storage under elevated temperatures or elevated relative humidity.
Abstract:
Surface-crosslinked superabsorbents are produced using a process that comprises the steps of contacting a superabsorbent base polymer with a polyvalent metal salt solution produced by dissolving at least two different polyvalent metal salts, at least one of which comprises a chelate-forming anion, and heat-treating to produce a surface-crosslinked superabsorbent.
Abstract:
Procedimiento para la reestabilización de monómeros (met)acrílicos, caracterizado porque de monómeros (met)acrílicos que contienen fenotiazina se separa fenotiazina mediante adsorción en carbón activo y dado el caso a continuación se añade un inhibidor de la polimerización de acción moderada seleccionado del grupo de los compuestos fenólicos y quinonas.