C - Chemistry – Metallurgy – 08 – F
Patent
C - Chemistry, Metallurgy
08
F
402/397, 402/404
C08F 2/04 (2006.01) A61L 15/60 (2006.01) C08F 2/10 (2006.01)
Patent
CA 2004331
O.Z. 0050/4043 Abstract of the Disclosure: Finely divided, gel-like, water-swellable copolymers are prepared by copolymerizing (a) 100 parts by weight of water-soluble, monoethylen- ically unsaturated monomers, (b) from 0.01 to 5 parts by weight of monomers contain- ing two or more ethylenically unsaturated double bonds and (c) from 0 to 20 parts by weight of water-insoluble, monoethylenically unsaturated monomers in 20-80% strength by weight aqueous solution in the presence of a polymerization initiator and from 0.1 to 10% by weight, based on the monomers used in the co- polymerization, of a surfactant, by a process in which the monomers are copolymerized in the presence of in- itially from 0 to 50% by weight of the amount of sur- factant to a conversion of not less than 60%, the remaining amount of surfactant is then added to the reaction mixture and the copolymerization is completed and the resulting gel particles dried.
Hartmann Heinrich
Heide Wilfried
Niessner Manfred
Wickel Stefan
Basf Aktiengesellschaft
Borden Ladner Gervais Llp
LandOfFree
Preparation of finely divided, gel-like, water-swellable... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Preparation of finely divided, gel-like, water-swellable..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Preparation of finely divided, gel-like, water-swellable... will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1686973