Light-sensitive composition including a diazonium saltpolycondensation product and a branched polyurethane binder
CA 1161294 A · Owner: Hoechst Aktiengesellschaft · Inventors: Neubauer, Rudolf
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A llght-sensitive composition for the preparation of printing plates and photoresists is described which comprises as the, light-sensitive compound a diazonium salt polycondensatlon product and as the binding agent a branched polyurethane resin which contains no terminal isocyanate groups and the terminal units of which are at least partially derived from dihydroxy comprises. The printing plates produced with this llght-sensitive composition are easily developable with aqueous developer solutions and yield long press runs.
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 January 31, 1984. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 31, 2001.
- 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.