Water base adhesion promotor for polypropylene and method for coating to polypropylene materials using the promotor
CA 2320276 C · Owner: Komatsu, Yasunori · Inventors: Wiseman, Michael Scott; Igarashi, Kazuo; Kamei, Sawako
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The water base adhesion promotor for polypropylene comprises: a grafted polypropylene chloride, which includes a polypropylene chloride moiety and a maleic anhydride moiety as bonded thereto and which has a chlorine content of , 15-25 weight % and a maleic anhydride moiety content of 1-5 weight %; an amineneutralized water-soluble resin; a wettability-improving agent; and water; and is characterized by having: a combination ratio of 25-90 weight % as of the grafted polypropylene chloride to the total of the grafted polypropylene chloride and the amine-neutralized water-soluble resin; a combination ratio of 2.5-6.0 weight % as of the wettability-improving agent to the entirety of the …
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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
- Filed February 4, 2000 and granted August 19, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 4, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 4, 2022.
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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.