Reinforced nylon compositions with superior surface appearance and weatherability
CA 2256100 A1 · Owner: Hurley, James M. · Inventors: Hurley, James M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed is a polyamide composition that includes: (a) a polyamide 6 resin having a methanol extractables content of at least about 1% and a combined monomer and dimer content of less than about 0.4% by weight of the polyamide; (b) a carbon black pigment having an average particle size of at least about 15 nm and a surface oxygen content of at least about 10% by weight of the carbon black; (c) an inorganic stabilizer; and (d) a reinforcing agent. Articles formed from the. composition of the invention have unexpectedly improved surface appearance and retention of gloss and color after weathering.
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 January 5, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 5, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 5, 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.