Scratch and abrasion resistant ionomers for protective formulations
CA 2346072 A1 · Owner: Powell, Richard James · Inventors: Powell, Richard James; Hausmann, Karlheinz
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Ethylene copolymer compositions that are useful for fabricating films and molded articles are disclosed. These compositions contain a combination of metal ions providing superior scratch and abrasion resistance than the individual composition containing only a single metal ion. These compositions comprise a copolymer of ethylene and 10-30 % by weight of acrylic acid or methacrylic acid which is neutralized from 10-99.9 % with a combination of at least two ions selected from the group consisting of Na Zn, Li, Mg and Ca in , a specific ratio. The compositions are useful for packaging abrasive goods and as transparent top layers for floors, wall covers or sporting goods.
Read the whole patent
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
- Filed November 4, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 4, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 4, 2021.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.