Polyquaternaries from mdea using dibasic acids and fatty acids
CA 2349414 A1 · Owner: Goldschmidt Chemical Corporation · Inventors: Keys, Robert O.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Polyquaternaries which are obtained by reacting at least one alkyldialkanolamine with a mixture of acids comprising at least one fatty acid and at least one dicarboxylic acid are disclosed. The inventive quaternaries have improved properties, such as softness dispersibility and high biodegradeability; therefore the, inventive esterquats are highly useful as a component in rinse cycle fabric softeners, dryer sheets hair, conditioners, paper debonders and other applications in which a high degree of softness is required.
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 1, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 1, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 1, 2023.
- 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.