Dioxaphosphorinane compounds as stabilisers for organic materials
CA 2045318 A1 · Owner: Ciba Specialty Chemicals Holding Inc. · Inventors: Nesvadba, Peter
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A-18130/A, Dioxaphosphorinane compounds as stabilisers for organic materials Abstract of the disclosure, Composition containing an organic polymer with the exception of epoxy-based polymers a lubricant, a metal-working fluid or a hydraulic fluid and as stabiliser, at least one, dioxaphosphorinane compound of the formulae (I), (II) or/and, (III). These compositions are stabilised against thermal oxidative and/or actinic degradation. The abovementioned compounds are also very suitable as wear-resistant agents andhigh-pressure additives in lubricants. Some of the dioxaphosphorinane compounds are novel. For the meaning of the radicals and symbols R1 R2, R3, R4, R5, R6, X?, A, R', R", m and n, …
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
- Filed June 24, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 24, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 24, 2013.
- 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.