Polysocyanate composition
CA 2091649 A1 · Owner: Dow Mitsubishi Kasei Ltd. · Inventors: Katano, Hiroaki; Yamaguchi, Shigeru; Tamaki, Yumiko
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to a storage stable and high reactive polyisocyanate composition having a wide range of storage and handling conditions. The polyisocyanate composition contains an organometallic based urethane catalyst of 30 to 500 ppm and an acylchloride compound of 30 to 10,000 ppm based on the polyisocyanate compound. The composition can effectively be utilized in various spot constructions such as spray foaming painting for water-proofing, floor painting of baseball ground and stand and paving, or the production of various polyurethane resins or foams. 40,501-F
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 March 15, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 15, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 15, 2015.
- 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.