Hydrophilic threedimensional polymer and the method for producing thereof
CA 1256641 A · Owner: Ceskoslovenska Akademie Ved · Inventors: Michalek, Jiri; Trekoval, Jiri; Vacik, Jiri
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
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 polyfunctional 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 univalent saturated alcohols …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted June 27, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 27, 2006.
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.