Photopolymerizable elastomeric mixture and recording material containing this mixture, for producing ozone-resistant flexographic printing forms
CA 2005209 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
A photopolymerizable elastomeric mixture for producing ozone-resistant flexographic printing forms is disclosed which contains an elastomeric binder, an olefinically unsaturated compound polymerizable by free radicals, a photoinitiator and a polyglycol ether of the general formula I R1-0-(A)1-(B)m-(C)n-R2, D (I), in which R1 and R2 are alkyl, especially (C1-C3)-alkyl R3 is hydrogen or alkyl, especially (Cl- C3)-alkyl, A, B, C can be identical or different and are and D oxa-n- or -iso-alkylene, especially oxan- or -iso-(C1-C3-alkylene and, l+m+n+o is 3 to 40. A recording material containing the photopolymerizable mixture as well as a process for producing A flexographic printing form are …
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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 December 12, 1989. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 12, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 12, 2011.
- 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
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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.