WATER-ABSORBING POLYMERS WITH IMPROVED PROPERTIES, PROCESS FOR THE PREPARATION AND USE THEREOF

The invention relates to powdery absorption agents for water and aqueous liquids based on water-swellable but not water soluble polymerisates which are cross-linked and comprise monomers carrying partially neutralised, monoethylenically unsaturated acid groups, optionally other monomers copolymerisa...

Ausführliche Beschreibung

Gespeichert in:

Bibliographische Detailangaben
1. Verfasser:	HOUBEN, JOCHEN
Format:	Patent
Sprache:	eng ; fre
Schlagworte:	ADHESIVES BASIC ELECTRIC ELEMENTS CABLES CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS, ORSURGICAL ARTICLES CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS CONDUCTORS DISINFECTION, STERILISATION, OR DEODORISATION OF AIR DYES ELECTRICITY HUMAN NECESSITIES HYGIENE INSULATORS MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICALARTICLES MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE MEDICAL OR VETERINARY SCIENCE METALLURGY METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS INGENERAL MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS ORGANIC MACROMOLECULAR COMPOUNDS PAINTS PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL POLISHES SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING ORDIELECTRIC PROPERTIES THEIR PREPARATION OR CHEMICAL WORKING-UP THEIR RELEVANT APPARATUS TRANSPORTING
Online-Zugang:	Volltext bestellen
Tags:	Tag hinzufügen Keine Tags, Fügen Sie den ersten Tag hinzu!

Beschreibung
Zusammenfassung:	The invention relates to powdery absorption agents for water and aqueous liquids based on water-swellable but not water soluble polymerisates which are cross-linked and comprise monomers carrying partially neutralised, monoethylenically unsaturated acid groups, optionally other monomers copolymerisable therewith and optionally polymers suitable as a graft base. Said polymerisates are prepared using a cross-linker combination from I. 40-90 % by moles of CH2=CHR5-CO-(OCHR3-CHR3)zO-CH2-CHR5=CH2 and II. 10-60 % by moles of R1-¢O(CHR3-CHR3O)u-CO-R2!x, where R1 is a polyvalent C2-10-alkyl, R2 is a linear or branched C2-10 alkenyl, R3 is H, CH3, C2H5, R5 is H, CH3, x is 2-6, u is 0-15, z is 3-20. Subsequent surface cross-linkage results in a property combination of a high level of retention, a high level of absorption under pressure, a low number of soluble components and rapid fluid absorption. The polymerisates are used in structures such as nappies for absorbing body fluids, in cables conducting current or light, or for growing plants.