Hot melt adhesive comprising water soluble polyalkyloxazoline and water insoluble polymer
CA 1332769 C · Owner: H.B. Fuller Licensing & Financing, Inc. · Inventors: Knutson, Keith C.; Simmons, Eugene R.; Scholl, Steven L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Normally water insoluble hot melt adhesive compositions containing structural polymers such as A-B-A block copolymers butyl rubbers, polyesters, ethylene vinyl acetates ethylene, acrylic acid polymers can be made sensitive to the action of water using an effective water sensitizing amount of a polyalkyloxazoline polymer in the hot melt adhesive. The polyalkyloxazoline polymer can be incorporated into a single phase adhesive composition with the structural polymer using an effective amount of a hydroxyl or carboxylic acid compound. The compositions are comprised of: (a) about 10-30 wt % of a thermoplastic aqueous insoluble polymer; (b) about 1-75 wt % of an N-substituted polyalkyleneimine of …
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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 October 25, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 25, 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
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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.