A process for producing a synthetic detergent soap base from n-acyl sarcosine
CA 2062856 A1 · Owner: Hampshire Chemical Corp. · Inventors: Crudden, Joseph James
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method of producing a synthetic detergent soap base, comprising neutralizing N-acyl sarcosine at an elevated temperature with a fatty acid salt to the desired pH, and allowing the mixture to cool. In a second embodiment, the method comprises dissolving in an N-acyl sarcosine at an elevated temperature a fatty acid, and neutralizing the mixture with base at a temperature sufficient to maintain fluidity to a pH of from about 4.5 to about 9.5. The resulting product is non-irritating and non-drying, and exhibits apparent skin substantivity and pleasant skin feel.
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 March 12, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 12, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 12, 2014.
- 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.