Solvent mixture for use in the development of negative-working recording layers
CA 2067608 A1 · Owner: Schlosser, Hans-Joachim · Inventors: Schlosser, Hans-Joachim
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 solvent mixture comprising (a) at least one completely hydrogenated aromatic which has a flash point above 40°C and a boiling point in the range from 150 to 220°C; and (b) at least one aliphatic alcohol containing 4 to 9 carbon atoms. The present invention relates to a process for the production of a relief printing form comprising the steps of: (a) irradiating imagewise with actinic radiation a recording material comprising a support and a negativeworking radiation-sensitive layer comprising an elastomeric polymer, a photopolymerizable monomer compatible therewith and a photoinitiator; and (b) developing said recording material with a developing solvent …
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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 April 29, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 29, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 29, 2014.
- 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.