Photo-polymerisable compositions
CA 1236645 A · Owner: Zeneca Limited · Inventors: Ratcliffe, Maurice J.; Shaw, Derek J.; Robinson, Peter A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A photopolymerisable composition which comprises at least one ethylenically unsaturated polymerisable monomer at least one, ketone selected from fluorenone benzil, and camphorquinone and, their substituted derivatives at least one reducing agent capable, of reducing the ketone when the latter is in an excited state and, at least one organic peroxide. These compositions find use in coatings for a range of substrates, in adhesives in paints, and, in varnishes. They are particularly useful in dental applications such as glazes, fissure sealants, and orthodontic cements.
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
- Granted May 10, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 10, 2005.
- 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.