Polyesteramide with improved compression set
CA 1270082 C · Owner: Andrews, Philip S. · Inventors: Andrews, Philip S.; Onder, Kemal; Weaver, Laura B.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed are novel blends comprising segmented polyesteramides with minor amounts of carbodiimide containing materials. The blends are characterized by excellent physical properties and improved compression set characteristics over the polyesteramides in the absence of the carbodiimide component. This allows the polymers obtained to find utility in the making of seals or gaskets which heretofore the base polyesteramides could not satisfy.
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 June 5, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 5, 2007.
- 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.