Adhesive resin composition and laminate made using the same as adhesive layer
CA 2250193 A1 · Owner: Mitsui Chemicals, Incorporated · Inventors: Morizono, Kenichi; Kawachi, Hideshi; Shigemoto, Hiromi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An adhesive resin composition which undergoes no decrease in bonding strength even in contact with, e.g. hot water; and a laminate which has excellent gasbarrier properties and is capable of retorting. The adhesive resin composition comprises a partly or wholly grafted .alpha.-olefin/aromatic vinyl random copolymer in which the amount of an unsaturated carboxylic acid or derivative thereof grafted is 0.01 to 30 % by weight. The laminate is constituted of: (I) a polyester resin layer or polycarbonate resin layer; (II) an adhesive layer made of the resin composition; and (III) a layer of a saponified olefin/vinyl acetate copolymer.
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 21, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 21, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 21, 2020.
- 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.