Poly .epsilon.-caprolactone plasticizers and vinylic polymer compositions plastified therewith
CA 2320046 A1 · Owner: Solvay (Societe Anonyme) · Inventors: Dehennau, Claude; Lahaye, Andree; Grandjean, Dominique
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Use of specific low molecular weight .epsilon.-caprolactone homopolymers having an average molecular weight of about 1000 g/mol. Which give unexpected advantages as a plasticizer for vinylic polymer compositions. The plasticizers may be incorporated into vinylic polymer compositions such as PVC , compositions and give the vinylic polymer composition into which they are incorporated properties approximating those which contain traditional plasticizers, such as DOP, DOA and TOTM while avoiding various disadvantages associated therewith.
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 December 10, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 10, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 10, 2021.
- 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.