Polymeric material containing aldehyde groups and the method of its preparation
CA 1054743 A · Owner: Ceskoslovenska Akademie Ved · Inventors: Kalal, Jaroslav; Zurkova, Eva; Svec, Frantisek
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A three-dimensional polymeric material in the form of spherical particles having a diameter of up to 3 mm and containing up to 40% of free aldehyde groups is formed by radical copolymerization of a monomer of the general formula: (I), where R1 is hydrogen, alkyl with 1 to 5 carbon atoms aryl or, furyl and R2 is hydrogen, alkyl with 1 to 5 carbon atoms halogen, nitrile, aryl or furyl, with a crosslinking agent in an amount of from 43.8 to 63.6% on a molar basis. The material may be used in continuous column processes, e.g. in catalysis of organic syntheses, separation of amines, and immobilization of compounds which contain primary amino groups.
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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 May 15, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 15, 1996.
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Timeline
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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.