Hot melt adhesives based on ethylene-n-butyl acrylate
CA 1331817 C · Owner: Brady, Francis X. · Inventors: Brady, Francis X.; Kauffman, Thomas F.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Hot melt packaging adhesive compositions consisting essentially of 35 to 450 by weight of an ethylene n-butyl acrylate copolymer containing 25 to 450 by weight, preferably 30 to 40% n-butyl acrylate and having a melt index of at least 50; 35 to 550 of a terpene phenolic tackifier; and 10 to 20% by weight of a high molting synthetic wax provide adhesives characterized by an excellent balance of high and low temperature performance without sacrifice to machinability or thermal stability. These are used for cartons trays, and cases for packaging products at temperatures greater than about 40°C which product may be stored at temperatures as low as about -18°C.
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
- Granted August 30, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 30, 2011.
- 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.