Polyolefin based hot melt adhesive composition
CA 2283845 A1 · Owner: Vion, Jean-Marc · Inventors: Vion, Jean-Marc
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A hot melt adhesive polyolefin composition having a viscosity from 7,000 to less than 500,000 mPa.sec, at 190 °C comprising (by weight): I) 5-85 % of a crystalline propylene polymer selected from a propylene homopolymer and copolymers of propylene with ethylene or a C4-C10 .alpha.-olefin or blends thereof having isotactic index from 80 , to 98 %; II) 5-85 % of an heterophasic polyolefin composition comprising: (i) a crystalline propylene polymer and (ii) an amorphous copolymer of ethylene with propylene or a C4-C10 .alpha.-olefin or blends thereof, containing less than 40 % of ethylene; III) 10-75 % of a material selected from aliphatic hydrocarbon resin terpene/phenolic resin, …
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 January 25, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 25, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 25, 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.