C - Chemistry – Metallurgy – 08 – F
Patent
C - Chemistry, Metallurgy
08
F
402/372
C08F 265/06 (2006.01) B29D 11/00 (2006.01) C08F 220/40 (2006.01) C08F 226/06 (2006.01) C08F 297/02 (2006.01) G02B 1/04 (2006.01)
Patent
CA 1256641
Hydrophilic threedimensional polymer and the method for producing thereof Hydrophilic threedimensional polymers, the prevailing mass of which is formed by structural units corresponding to monomers miscible with water at any ratio, and the method for their production, wherein one weight part of the monomers miscible with water is copolymerized, by the effect of free- -radical initiators, with 0.01 to 1 weight part of a polyfunc- tional unsaturated oligomer, which is prepared with an average degree of polymerization x = 3 to x = 100 by the anionic polymerization of allyl methacrylate, with the contingent addition of methacrylonitrile or methacrylic esters of uni- valent saturated alcohols containing 1 to 4 carbon atoms or methacrylic esters of monohydroxy compounds containing at least one etheric oxygen atom in the chain, or where 0.7 to 1 weight part of monomers miscible with water is copolymerized with 0.01 to 0.3 weight parts of hydrophobic monomers of the alkyl methacrylate or acrylate type in the presence of an oligomeric crosslinking agent with at least two olefinic double bonds added in the amount of 0.01 to 0.1 weight parts, advantageously up to 0.05 weight parts, by the effect of free-radical initiators.
478476
Michalek Jiri
Trekoval Jiri
Vacik Jiri
Wichterle Otto
Ceskoslovenska Akademie Ved
Robic Robic & Associes/associates
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