POWDER-FORM CROSS-LINKED POLYMERS CAPABLE OF ABSORBING AQUEOUS LIQUIDS AND BODY FLUIDS, METHOD OF PREPARING THEM AND THEIR USE
The invention concerns powder-form, water-swelling cross-linked polymers with a high capacity for absorbing, under pressure, aqueous liquids, in particular body fluids, the polymers being made from (a) monomers containing 55-99.9 % by wt. of acid groups of which at least 50 mole % have been neutrali...
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| creator | HERRMANN, EDGAR DAHMEN, KURT PFLUGER, KLAUS |
| description | The invention concerns powder-form, water-swelling cross-linked polymers with a high capacity for absorbing, under pressure, aqueous liquids, in particular body fluids, the polymers being made from (a) monomers containing 55-99.9 % by wt. of acid groups of which at least 50 mole % have been neutralized; (b) 0-40 % by wt. of monomers copolymerizable with (a); (c) 0.1-5.0 % by wt. of at least one cross-linking agent and (d) 0-30 % by wt. of a watersoluble polymer. The cations of the salts covered by (a) include Li+ and Na+ but preferably K+, Cs+ and Rb+ plus primary, secondary or tertiary methylammonium ions, alone or in combination. The polymers are prepared by reacting the monomers together with a carbon dioxide expanding agent, drying the polymer thus formed and then heating it to a temperature of 100-300.degree.C with one or more compounds capable of reacting with the polymer to cross-link the surface layer. Polymers of this kind are suitable for use as components of nappies, sanitary towels and incontinence pads, as components of current- and light-carrying cables, as soil-improvement agents and artificial earth in plant cultivation and as packaging materials. |
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The cations of the salts covered by (a) include Li+ and Na+ but preferably K+, Cs+ and Rb+ plus primary, secondary or tertiary methylammonium ions, alone or in combination. The polymers are prepared by reacting the monomers together with a carbon dioxide expanding agent, drying the polymer thus formed and then heating it to a temperature of 100-300.degree.C with one or more compounds capable of reacting with the polymer to cross-link the surface layer. Polymers of this kind are suitable for use as components of nappies, sanitary towels and incontinence pads, as components of current- and light-carrying cables, as soil-improvement agents and artificial earth in plant cultivation and as packaging materials.</description><edition>6</edition><language>eng ; fre</language><subject>ADHESIVES ; AGRICULTURE ; ANIMAL HUSBANDRY ; BANDAGES, DRESSINGS OR ABSORBENT PADS ; 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 ; CONDUCTORS ; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPSOR SEAWEED ; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF,TUBULAR STRUCTURES OF THE BODY, E.G. STENTS ; DISINFECTION, STERILISATION, OR DEODORISATION OF AIR ; DYES ; ELECTRICITY ; FILTERS IMPLANTABLE INTO BLOOD VESSELS ; FIRST-AID KITS ; FISHING ; FOMENTATION ; FORESTRY ; HORTICULTURE ; HUMAN NECESSITIES ; HUNTING ; 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 ; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS ; OPTICS ; ORGANIC MACROMOLECULAR COMPOUNDS ; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES ; PAINTS ; PERFORMING OPERATIONS ; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL ; PHYSICS ; POLISHES ; PROSTHESES ; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING ORDIELECTRIC PROPERTIES ; THEIR PREPARATION OR CHEMICAL WORKING-UP ; THEIR RELEVANT APPARATUS ; TRANSPORTING ; TRAPPING ; TREATMENT OR PROTECTION OF EYES OR EARS ; WATERING</subject><creationdate>1999</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19991026&DB=EPODOC&CC=CA&NR=2166779C$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25564,76547</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19991026&DB=EPODOC&CC=CA&NR=2166779C$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>HERRMANN, EDGAR</creatorcontrib><creatorcontrib>DAHMEN, KURT</creatorcontrib><creatorcontrib>PFLUGER, KLAUS</creatorcontrib><title>POWDER-FORM CROSS-LINKED POLYMERS CAPABLE OF ABSORBING AQUEOUS LIQUIDS AND BODY FLUIDS, METHOD OF PREPARING THEM AND THEIR USE</title><description>The invention concerns powder-form, water-swelling cross-linked polymers with a high capacity for absorbing, under pressure, aqueous liquids, in particular body fluids, the polymers being made from (a) monomers containing 55-99.9 % by wt. of acid groups of which at least 50 mole % have been neutralized; (b) 0-40 % by wt. of monomers copolymerizable with (a); (c) 0.1-5.0 % by wt. of at least one cross-linking agent and (d) 0-30 % by wt. of a watersoluble polymer. The cations of the salts covered by (a) include Li+ and Na+ but preferably K+, Cs+ and Rb+ plus primary, secondary or tertiary methylammonium ions, alone or in combination. The polymers are prepared by reacting the monomers together with a carbon dioxide expanding agent, drying the polymer thus formed and then heating it to a temperature of 100-300.degree.C with one or more compounds capable of reacting with the polymer to cross-link the surface layer. Polymers of this kind are suitable for use as components of nappies, sanitary towels and incontinence pads, as components of current- and light-carrying cables, as soil-improvement agents and artificial earth in plant cultivation and as packaging materials.</description><subject>ADHESIVES</subject><subject>AGRICULTURE</subject><subject>ANIMAL HUSBANDRY</subject><subject>BANDAGES, DRESSINGS OR ABSORBENT PADS</subject><subject>BASIC ELECTRIC ELEMENTS</subject><subject>CABLES</subject><subject>CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS, ORSURGICAL ARTICLES</subject><subject>CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY</subject><subject>CHEMISTRY</subject><subject>COMPOSITIONS BASED THEREON</subject><subject>CONDUCTORS</subject><subject>CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPSOR SEAWEED</subject><subject>DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF,TUBULAR STRUCTURES OF THE BODY, E.G. STENTS</subject><subject>DISINFECTION, STERILISATION, OR DEODORISATION OF AIR</subject><subject>DYES</subject><subject>ELECTRICITY</subject><subject>FILTERS IMPLANTABLE INTO BLOOD VESSELS</subject><subject>FIRST-AID KITS</subject><subject>FISHING</subject><subject>FOMENTATION</subject><subject>FORESTRY</subject><subject>HORTICULTURE</subject><subject>HUMAN NECESSITIES</subject><subject>HUNTING</subject><subject>HYGIENE</subject><subject>INSULATORS</subject><subject>MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS</subject><subject>MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICALARTICLES</subject><subject>MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE</subject><subject>MEDICAL OR VETERINARY SCIENCE</subject><subject>METALLURGY</subject><subject>METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS INGENERAL</subject><subject>MISCELLANEOUS APPLICATIONS OF MATERIALS</subject><subject>MISCELLANEOUS COMPOSITIONS</subject><subject>NATURAL RESINS</subject><subject>OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS</subject><subject>OPTICS</subject><subject>ORGANIC MACROMOLECULAR COMPOUNDS</subject><subject>ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES</subject><subject>PAINTS</subject><subject>PERFORMING OPERATIONS</subject><subject>PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL</subject><subject>PHYSICS</subject><subject>POLISHES</subject><subject>PROSTHESES</subject><subject>SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING ORDIELECTRIC PROPERTIES</subject><subject>THEIR PREPARATION OR CHEMICAL WORKING-UP</subject><subject>THEIR RELEVANT APPARATUS</subject><subject>TRANSPORTING</subject><subject>TRAPPING</subject><subject>TREATMENT OR PROTECTION OF EYES OR EARS</subject><subject>WATERING</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>1999</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNqFi70KwjAURrs4iPoM3gewgwotjvm5scG0N00apFMpEifRQp19dq24O33ng3PmycvSWaJLFbkShCPvU6OrE0qwZNoSnQfBLOMGgRQw7slxXR2B1QEpeDC6Dlp6YJUETrIFZaa_gRKbguQUWYeWuSlqCiy_5ge0g-Bxmcyu_W2Mq98ukrXCRhRpHB5dHIf-Eu_x2Qm222ZZnh_E_r_xBvjmOoA</recordid><startdate>19991026</startdate><enddate>19991026</enddate><creator>HERRMANN, EDGAR</creator><creator>DAHMEN, KURT</creator><creator>PFLUGER, KLAUS</creator><scope>EVB</scope></search><sort><creationdate>19991026</creationdate><title>POWDER-FORM CROSS-LINKED POLYMERS CAPABLE OF ABSORBING AQUEOUS LIQUIDS AND BODY FLUIDS, METHOD OF PREPARING THEM AND THEIR USE</title><author>HERRMANN, EDGAR ; DAHMEN, KURT ; PFLUGER, KLAUS</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_CA2166779C3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng ; fre</language><creationdate>1999</creationdate><topic>ADHESIVES</topic><topic>AGRICULTURE</topic><topic>ANIMAL HUSBANDRY</topic><topic>BANDAGES, DRESSINGS OR ABSORBENT PADS</topic><topic>BASIC ELECTRIC ELEMENTS</topic><topic>CABLES</topic><topic>CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS, ORSURGICAL ARTICLES</topic><topic>CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY</topic><topic>CHEMISTRY</topic><topic>COMPOSITIONS BASED THEREON</topic><topic>CONDUCTORS</topic><topic>CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPSOR SEAWEED</topic><topic>DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF,TUBULAR STRUCTURES OF THE BODY, E.G. STENTS</topic><topic>DISINFECTION, STERILISATION, OR DEODORISATION OF AIR</topic><topic>DYES</topic><topic>ELECTRICITY</topic><topic>FILTERS IMPLANTABLE INTO BLOOD VESSELS</topic><topic>FIRST-AID KITS</topic><topic>FISHING</topic><topic>FOMENTATION</topic><topic>FORESTRY</topic><topic>HORTICULTURE</topic><topic>HUMAN NECESSITIES</topic><topic>HUNTING</topic><topic>HYGIENE</topic><topic>INSULATORS</topic><topic>MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS</topic><topic>MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICALARTICLES</topic><topic>MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE</topic><topic>MEDICAL OR VETERINARY SCIENCE</topic><topic>METALLURGY</topic><topic>METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS INGENERAL</topic><topic>MISCELLANEOUS APPLICATIONS OF MATERIALS</topic><topic>MISCELLANEOUS COMPOSITIONS</topic><topic>NATURAL RESINS</topic><topic>OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS</topic><topic>OPTICS</topic><topic>ORGANIC MACROMOLECULAR COMPOUNDS</topic><topic>ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES</topic><topic>PAINTS</topic><topic>PERFORMING OPERATIONS</topic><topic>PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL</topic><topic>PHYSICS</topic><topic>POLISHES</topic><topic>PROSTHESES</topic><topic>SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING ORDIELECTRIC PROPERTIES</topic><topic>THEIR PREPARATION OR CHEMICAL WORKING-UP</topic><topic>THEIR RELEVANT APPARATUS</topic><topic>TRANSPORTING</topic><topic>TRAPPING</topic><topic>TREATMENT OR PROTECTION OF EYES OR EARS</topic><topic>WATERING</topic><toplevel>online_resources</toplevel><creatorcontrib>HERRMANN, EDGAR</creatorcontrib><creatorcontrib>DAHMEN, KURT</creatorcontrib><creatorcontrib>PFLUGER, KLAUS</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>HERRMANN, EDGAR</au><au>DAHMEN, KURT</au><au>PFLUGER, KLAUS</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>POWDER-FORM CROSS-LINKED POLYMERS CAPABLE OF ABSORBING AQUEOUS LIQUIDS AND BODY FLUIDS, METHOD OF PREPARING THEM AND THEIR USE</title><date>1999-10-26</date><risdate>1999</risdate><abstract>The invention concerns powder-form, water-swelling cross-linked polymers with a high capacity for absorbing, under pressure, aqueous liquids, in particular body fluids, the polymers being made from (a) monomers containing 55-99.9 % by wt. of acid groups of which at least 50 mole % have been neutralized; (b) 0-40 % by wt. of monomers copolymerizable with (a); (c) 0.1-5.0 % by wt. of at least one cross-linking agent and (d) 0-30 % by wt. of a watersoluble polymer. The cations of the salts covered by (a) include Li+ and Na+ but preferably K+, Cs+ and Rb+ plus primary, secondary or tertiary methylammonium ions, alone or in combination. The polymers are prepared by reacting the monomers together with a carbon dioxide expanding agent, drying the polymer thus formed and then heating it to a temperature of 100-300.degree.C with one or more compounds capable of reacting with the polymer to cross-link the surface layer. Polymers of this kind are suitable for use as components of nappies, sanitary towels and incontinence pads, as components of current- and light-carrying cables, as soil-improvement agents and artificial earth in plant cultivation and as packaging materials.</abstract><edition>6</edition><oa>free_for_read</oa></addata></record> |
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| subjects | ADHESIVES AGRICULTURE ANIMAL HUSBANDRY BANDAGES, DRESSINGS OR ABSORBENT PADS 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 CONDUCTORS CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPSOR SEAWEED DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF,TUBULAR STRUCTURES OF THE BODY, E.G. STENTS DISINFECTION, STERILISATION, OR DEODORISATION OF AIR DYES ELECTRICITY FILTERS IMPLANTABLE INTO BLOOD VESSELS FIRST-AID KITS FISHING FOMENTATION FORESTRY HORTICULTURE HUMAN NECESSITIES HUNTING 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 OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICS ORGANIC MACROMOLECULAR COMPOUNDS ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES PAINTS PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL PHYSICS POLISHES PROSTHESES SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING ORDIELECTRIC PROPERTIES THEIR PREPARATION OR CHEMICAL WORKING-UP THEIR RELEVANT APPARATUS TRANSPORTING TRAPPING TREATMENT OR PROTECTION OF EYES OR EARS WATERING |
| title | POWDER-FORM CROSS-LINKED POLYMERS CAPABLE OF ABSORBING AQUEOUS LIQUIDS AND BODY FLUIDS, METHOD OF PREPARING THEM AND THEIR USE |
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