Use of modified polyethylene for finishing glass surfaces
CA 1306150 C · Owner: Ruf, Erich · Inventors: Ruf, Erich
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Modified polyethylene with an average molecular weight of 500 to 10,000is disclosed. The polyethylene has one or more laterally bound group(s) of the formula, -CONH(CH2)nNR1R2, wherein R1 and R2 are the same or different and represent a low molecular weight alkyl group with 1 to 4 carbon atoms and n is 2 or 3 or its, salts with aliphatic carboxylic acids with 1 to 3 carbon atoms. The modified polyethylene is applied in the form of an aqueous dispersion to glass surfaces, especially the external surfaces of glass containers. The modified polyethylene is suitable especially for so-called cold-end finishing. The protective layers obtained have very good smoothing values. The protective layers …
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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 August 11, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 11, 2009.
- 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.