Sulfonated anionic microgel latices useful as antistatic agents
CA 1135433 A · Owner: Eastman Kodak Company · Inventors: Campbell, Gerald A.; Kelley, Richard N.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed herein are microgel compositions useful for the preparation of electrically conductive or antistatic layers in radiation sensitive materials and particularly in, photographic materials. The compositions comprise an aqueous dispersion of a sulfonated crosslinked polymer preferably, mixed with a binder. The polymer particles average less than one micron in diameter. Also disclosed herein is a method of preparing these microgel compositions.
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 November 9, 1982. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 9, 1999.
- 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.