Liquid compositions comprising stability enhancing surfactants and a method of enhancing low temperature stability thereof
CA 2263981 A1 · Owner: Unilever Plc · Inventors: Kolodziej, Richard; Shana'A, May; Puvvada, Sudhakar
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to lamellar structured liquid cleansing compositions comprising 5 % to 50 % of a surfactant system comprising (a) an anionic or mixture of anionics and (b) an amphoteric and/or zwitterionic surfactant in mixture, wherein alkalimetal alkylamphoacetate comprises 25 % to 90 % of component (b). A method of enhancing low temperature stability of such lamellar structured liquid cleansing compositions by the selection of an alkalimetal alkylamphoacetate in an amount of 25 % to 90 % of the component (b ) is provided. Excellent low temperature stability is achieved.
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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
- Filed September 4, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 4, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 4, 2019.
- 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
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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.