Radiation-curable blend of a cellulose ester and a multifunctional (meth)acrylate
CA 2024940 A1 · Owner: Patnaik, Birendra K. · Inventors: Patnaik, Birendra K.; Brown, Richard G.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
0990p(FF) Brown & Patnaik Case 1, RADIATION-CURABLE BLEND OF A CELLULOSE ESTER AND A MULTIFUNCTIONAL (METH)ACRYLATE Abstract of the Disclosure, A coating composition for protecting wood and other surfaces comprises a radiation-curable blend of (1) 30%-70% of a cellulose ester, (2) 70%-30% of at least one acrylic or methacrylic ester having more than two (meth)acrylate groups and (3) 0.1%-10% of a photoinitiator, all percentages being based on the weight of solids. In coatings particularly suited for application over oleophilic color coats for wood the (meth)acrylic ester having more than two (meth)acrylate groups is a polyurethane (meth)acrylate substituted by alkyl groups having at least 8 …
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 September 10, 1990. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 10, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 10, 2012.
- 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.