Preparation of esterified propoxylated glycerin from free fatty acids
CA 1331014 C · Owner: Arco Chemical Technology, Inc. · Inventors: Cooper, Charles F.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A novel method is provided for the preparation of a esterified propoxylated glycerin having food grade quality by reacting at temperatures of from about 100°C to about 250°C a propoxylated glycerin having from 2 to 100 oxypropylene oxide units per glycerin with excess C10 - C24 fatty acids and purifying the reactant product by methanol extraction or steam stripping and neutralization of excess fatty acid.
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
- Granted July 26, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 26, 2011.
- 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.