Stable liquid-vinylidene-terminated polymers
CA 1109194 A · Owner: Goodrich (B.F.) Company (The) · Inventors: Riew, Changkiu K.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Improved liquid vinylidene terminated, polymers having long term shelf stability are prepared by the reaction of a (1) liquid polymer having a terminal functional group such as carboxyl, hydroxyl and mercaptan with (2) a compound containing both an epoxy group and a vinylidene group in the presence of carboxylic acid. The polymers cure readily to solid elastomers which are useful as sealants caulks, potting, compounds, coatings and the like.
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 September 15, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 15, 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.