Photopolymerizable mixture and recording material produced therefrom
CA 2019366 A1 · Owner: Hoechst Aktiengesellschaft · Inventors: Kroggel, Matthias; Rauterkus, Karl-Josef; Mohr, Dieter
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Photopolymerizable mixture and recording material produced therefrom, The invention discloses a photopolymerizable mixture which contains, as essential constituents, a) a graft copolymer having a polyurethane as the graft backbone, onto chains containing vinyl alcohol units and vinyl acetal units are grafted b) a free-radically polymerizable compound possessing at least one terminal ethylenically unsaturated group and having a boiling point of more than 100 °C at normal pressure, and, c) a compound or a combination of compounds which under the action of actinic light is capable of initiating the polymerization of compound b). The mixture is suitable for use in the production of printing …
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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 June 20, 1990. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 20, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 20, 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.