Fluid-absorbing polymers, process for the preparation and...

C - Chemistry – Metallurgy – 08 – F

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C08F 265/02 (2006.01) A61L 15/22 (2006.01) A61L 15/60 (2006.01) C08F 251/00 (2006.01) C08F 261/04 (2006.01) C08F 290/06 (2006.01) C08F 291/00 (2006.01) H01B 3/30 (2006.01)

Patent

CA 2236504

The invention relates to super-absorbent, cross-linked polymerisates for aqueous liquids which comprise monomers carrying partially neutralised, monoethylenically unsaturated acid groups, optionally other monomers copolymerisable therewith and optionally polymers suitable as a graft base. Said polymerisates can be obtained using a cross-linkage/ monomer combination from I. CH2=CHR6-CO-(OCHR3-CHR3)zO-CH2-CHR6=CH2, II. CH2=CHR6-R5-(OCHR3- CHR3)vOR4, III. R1-[O(CHR3-CHR3O)u-CO-R2]x, and/or diallyl amine or triallyl amine and /or bisacrylamides, where R1 is a polyvalent C2-10-alkyl, R2 is a linear or branched C2-10 alkenyl, R3 is H, CH3, C2H5, R4 is H, linear or branched C1-10 alkyl, R5 is CO, CH2, R6 is H, CH3, x is 2-6, u is 0-15, v is 1- 45.

L'invention concerne des polymérisats réticulés superabsorbants pour liquides aqueux, comprenant des monomères portant des groupes acides insaturés monoéthyléniquement partiellement neutralisés, éventuellement d'autres monomères copolymérisables avec les précédents, ainsi qu'éventuellement des polymères s'utilisant comme base de greffe. Ces polymérisats s'obtiennent à l'aide d'une combinaison de réticulants et de monomères comprenant I. CH¿2?=CHR?6¿-CO-(OCHR?3¿-CHR?3¿)¿z?O-CH¿2?-CHR?6¿=CH¿2?, II. CH¿2?=CHR?6¿-R?5¿-(OCHR?3¿-CHR?3¿)¿v?OR?4¿, III. R?1¿-[O(CHR?3¿-CHR?3¿O)¿u?-CO-R?2¿]¿x?, et/ou di- ou triallylamine et/ou bisacrylamides, R?1¿ désignant alkyle C¿2?-C¿10? polyvalent, R?2¿ désignant alkényle C¿2?-C¿10? linéaire ou ramifié, R?3¿ désignant H, CH¿3?, C¿2?H¿5?, R?4¿ désignant H, alkyle C¿1?-C¿10? linéaire ou ramifié, R?5¿ désignant CO, CH¿2?, R?6¿ désignant H, CH¿3?, x valant entre 2 et 6, u entre 0 et 15 et v entre 1 et 45.

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