CROSS-LINKED SYNTHETIC POLYMERS WITH HIGH ABSORBTION CAPACITY, THE PROCESS FOR PRODUCTION AND USE

Vodou napučiavateľné, zosieťované, čiastočkové polyméry na báze kyseliny akrylovej a jej derivátov majú vysokú absorpciu a zlepšenú mieru absorpcie na vodu, vodné roztoky a telesné tekutiny a obsahujú polymérne častice s hustotou 1,0 g/cm3 a majú poréznu štruktúru tvorenú dusíkom dispergovaným v pol...

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Bibliographische Detailangaben
1. Verfasser:	CHMELIR MIROSLAV
Format:	Patent
Sprache:	eng ; slo
Schlagworte:	ADHESIVES AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G AGRICULTURE ANIMAL HUSBANDRY BANDAGES, DRESSINGS OR ABSORBENT PADS BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES, AS HERBICIDES CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS, ORSURGICAL ARTICLES CHEMISTRY COMPOSITIONS BASED THEREON DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF,TUBULAR STRUCTURES OF THE BODY, E.G. STENTS DISINFECTION, STERILISATION, OR DEODORISATION OF AIR DYES FERTILISERS FERTILISERS CHARACTERISED BY THEIR FORM FILTERS IMPLANTABLE INTO BLOOD VESSELS FIRST-AID KITS FISHING FOMENTATION FORESTRY GENERAL PROCESSES OF COMPOUNDING HUMAN NECESSITIES HUNTING HYGIENE LAKES MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS MANUFACTURE THEREOF 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 MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENTSUBCLASSES OF CLASS C05 MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVINGA SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES,SOIL-CONDITIONERS, WETTING AGENTS MORDANTS NATURAL RESINS ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES ORGANIC MACROMOLECULAR COMPOUNDS ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES PAINTS PEST REPELLANTS OR ATTRACTANTS PLANT GROWTH REGULATORS POLISHES PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTSTHEREOF PROSTHESES THEIR PREPARATION OR CHEMICAL WORKING-UP TRAPPING TREATMENT OR PROTECTION OF EYES OR EARS WORKING-UP
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Beschreibung
Zusammenfassung:	Vodou napučiavateľné, zosieťované, čiastočkové polyméry na báze kyseliny akrylovej a jej derivátov majú vysokú absorpciu a zlepšenú mieru absorpcie na vodu, vodné roztoky a telesné tekutiny a obsahujú polymérne častice s hustotou 1,0 g/cm3 a majú poréznu štruktúru tvorenú dusíkom dispergovaným v polyméri. Pripravia sa polymerizáciou vodorozpustných monomérov v prítomnosti sieťovacieho di- alebo polyfunkčného monoméru, nadúvadla a niekoľkých azozlúčenín s polčasom rozpadu 10 hodín pri teplote 30 až 120 °C v koncentrácii iniciátora a nadúvadla 0,1 až 5,0 % hmotn. a polymérny gél sa drví, suší, melie a preosieva. Použitie pripravených polymérov na absorpciu a/alebo retenciu telesných tekutín v oblasti medicíny.ŕ PCT No. PCT/EP94/04221 Sec. 371 Date Jun. 24, 1996 Sec. 102(e) Date Jun. 24, 1996 PCT Filed Dec. 19, 1994 PCT Pub. No. WO95/17455 PCT Pub. Date Jun. 29, 1995The present invention relates to cross-linked synthetic polymers based on acrylic acid and its derivatives, which have a high absorption capacity and an improved absorption rate for water, aqueous solutions and body fluids, to a process for their production by radical polymerization under such conditions that polymers are obtained which have a porous structure and a swelling degree-dependent particle density so that the polymer particles are floatable in water or aqueous liquids. The present invention further relates to the use of these polymers for the absorption and/or retention of water and for the release of water and/or an active substance solution to a surrounding medium. The porous structure of the polymers is formed by nitrogen dispersed in the polymer, with at least one azo compound being added to the aqueous monomer solution as polymerization initiator and blowing agent, which azo compound has a half-time of at least 10 hours at a temperature of 30 DEG to 120 DEG C.