Storage-stable pasty polyacrylamide prepn. - by acrylamide polymerisation in basic soln. contg. opt. modified highly dispersed silicon di:oxide

Storage-stable pasty polyacrylamide prepn. - by acrylamide polymerisation in basic soln. contg. opt. modified highly dispersed silicon di:oxide

Polyacrylamide is prepd. by acrylamide polymerisation in an aq. basic soln. contg. a redox system. Novelty consists of carrying out polymerisation in the presence of highly dispersed SiO2 opt. modified by grafting the surface with 0.4-0.9 mmol/g diethylene glycol-, dimethyl-silylene-, aminoethoxy-,...

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Bibliographische Detailangaben
1. Verfasser: PETR ANDREEVICH GLUBISH, NIKOLAI VASILIEVICH KHABER, MIKHAIL IVANOVICH KHOMA ET ANATOLY BORISOVICH KONDRATENKO
Format: Patent
Sprache:eng ; fre
Schlagworte:
CHEMISTRY
COMPOSITIONS BASED THEREON
MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
THEIR PREPARATION OR CHEMICAL WORKING-UP
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Zusammenfassung:Polyacrylamide is prepd. by acrylamide polymerisation in an aq. basic soln. contg. a redox system. Novelty consists of carrying out polymerisation in the presence of highly dispersed SiO2 opt. modified by grafting the surface with 0.4-0.9 mmol/g diethylene glycol-, dimethyl-silylene-, aminoethoxy-, phenyl aminomethylene-methyl-diethoxy- or butoxy gps. The polyacrylamide is used in finishing textiles. A pasty polyacrylamide is obtd. which easily dissolved in water. Polyacrylamide storage stability is increased from 6 months to 1-1.5 years. The finished textiles are given the required stiffness and full hand and have improved abrasion-resistance and soil-repellency. L'INVENTION CONCERNE LA CHIMIE DES POLYMERES.LE PROCEDE FAISANT L'OBJET DE L'INVENTION EST DU TYPE CONSISTANT A POLYMERISER L'ACRYLAMIDE DANS UNE SOLUTION AQUEUSE SOUS L'ACTION D'UN SYSTEME D'OXYDO-REDUCTION EN MILIEU ALCALIN, ET EST CARACTERISE PAR LE FAIT QUE LA POLYMERISATION EST EFFECTUEE EN PRESENCE DE BIOXYDE DE SILICIUM TRES FIN, OU DE BIOXYDE DE SILICIUM TRES FIN MODIFIE PAR GREFFAGE, SUR SA SURFACE, DE GROUPES DIETHYLENEGLYCOL, OU DIMETHYLSILYLE, OU AMINOETHOXY, OU PHENYLAMINOMETHYLENEMETHYLDIETHOXY, OU BUTOXY, A RAISON DE 0,4 A 0,9MMOLEG.LE POLYACRYLAMIDE OBTENU EST UTILISE NOTAMMENT POUR LE TRAITEMENT DE TISSUS AFIN D'AMELIORER LEUR TOUCHER, AINSI QUE POUR LES RENDRE MOINS TACHABLES OU SALISSANTS, PLUS DURS ET APTES AU DRAPE.