Thermoplastic elastomers comprising vinyl halide grafted to crosslinked acrylic latexes
CA 2045454 A1 · Owner: The B.F. Goodrich Company · Inventors: Stanislawczyk, Vic; Wypart, Roman W.; Skillicorn, Douglas E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
BFG-880109, Title: THERMOPLASTIC ELASTOMERS COMPRISING VINYL HALIDE GRAFTED TO CROSSLINKED ACRYLIC LATEXES Abstract of the Disclosure, Thermoplastic elastomer resins are described which comprise vinyl halide grafted to crosslinked acrylic latex particles comprising predominantly acrylate-containing, crosslinked polymer chains derived from (A) at least one acrylate monomer of the formula, CH2=C(R1)C(O)OR2 (I), wherein R1 is hydrogen or methyl; and R2 is an alkyl group containing from 1 to 20 carbon atoms an alkoxy, alkyl or alkyl thioalkyl group containing from 2 to about 7 carbon atoms, or a cyano alkyl group containing from 2 to about 7 carbon atoms; and, (B) at least one alpha …
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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
- Filed June 25, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 25, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 25, 2013.
- 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.