Recyclable hot melt adhesive compositions
CA 1332649 C · Owner: Kauffman, Thomas F. · Inventors: Kauffman, Thomas F.; Puletti, Paul P.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Recyclable hot melt adhesive compositions suitable for plastic bonding may be prepared from styrene-ethylene-butylenestyrene tri-block and/or styrene-ethylene-butylene di-block copolymers which are tackified with at least one hydrogenated resin based on alpha-methyl styrene, vinyl toluene styrene, coumarone-indene, dicyclopentadiene or mixtures thereof option-, ally containing small amounts of white mineral oil or similar diluent. In addition, the adhesive may or may not include minor amounts of the above-described pure monomer resins (specifically composed of styrene, alpha methyl styrene or vinyl toluene or mixtures thereof) in their non-hydrogenated form to serve as end block reinforcing …
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 October 18, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 18, 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.