Polychloroprene/diisocyanate adhesive system, wherein in the chloroprene rubber solution n-propylbromide is used as a solvent
CA 2319300 A1 · Owner: Rauch, Christian · Inventors: Rauch, Christian
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention concerns a novel adhesive system based on an adhesive chosen from among chloroprene rubber, hydroxypolyester polyurethane or , natural, rubber, and uses n-propyl bromide as solvent. The object is to avoid the use of solvents that are flammable detrimental to, health, or even carcinogenic in an adhesive system which however must achieve, results with regard to the adhesive properties that are comparable to those of trichloroethylene.
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 September 14, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 14, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 14, 2022.
- 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.