Rubber mixtures based on non-vulcanised rubber and vulcanised rubber particles and multifunctional isocyanates based on polyurethane
CA 2419362 A1 · Owner: Bayer Aktiengesellschaft · Inventors: Obrecht, Werner; Sumner, Anthony; Mezger, Martin
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to rubber mixture comprising non-vulcanised, double-, bounded rubber (A) vulcanised rubber particles (B) and multifunctional isocyanates based on polyurethane (C). According to the invention the , proportion of component (B) in the mixture in relation to 100 wt. parts (phr) of component (A) is 1-150 wt. parts, and the proportion of multifunctional isocyanates based on polyurethane (component C) can amount to 1 - 100 wt. parts. The inventive mixtures can be used to produce vulcanised rubber and rubber shaped bodies of all types, wherein the vulcanisates thus produced comprise an advantageous combination of mechanical properties for example, tensile stress at 300 % …
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 August 3, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 3, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 3, 2023.
- 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.