Non-aqueous polymer solutions for barrier coatings
CA 1096083 A · Owner: E. I. Du Pont De Nemours And Company · Inventors: Keene, Frederick J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An oil and water repellent barrier coating composition comprising a non-aqueous solution of: (A) a film forming polymer; and, (B) a fluorochemical surface tension modifier is provided. Optionally the barrier coating composition can also contain a plasticizer. Such composition is useful in imparting oil, grease, and water repellency to cellulosic substrates such as paper paperboard, regenerated cellulose, and wood and provides improved coatings for packaging and non-packaging materials.
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 February 17, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 17, 1998.
- 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.