Substituted phenols as stabilisers
CA 1289147 C · Owner: Ciba Specialty Chemicals Holding Inc. · Inventors: Knobloch, Gerrit; Meier, Hans-Rudolf
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Substituted phenols as stabilisers, Abstract of the Disclosure Novel compositions are described which contain an elastomer or a tackifying resin and at least one compound of formula I (I). The symbols R1, R2 and R3 are as defined in claim 1. Some of the compounds of formula I are novel and are suitable as stabilisers for lubricants. The novel compositions are suitable for example for the preparation of films or adhesives.
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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 17, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 17, 2008.
- 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.