Water-based hydraulic fluid and metalworking lubricant
CA 1085814 A · Owner: Basf Wyandotte Corporation · Inventors: Maxwell, Jerrold F.; Nassry, Assadullah
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention is concerned with a hydraulic fluid or metal working fluid concentrate capable of imparting to water the properties of a lubricant such as resistance to extreme pressure and corrosion inhibition. The concentrate of the invention consists essentially of (a) a water-soluble polyoxyethylated aliphatic ester consisting of esters of ethoxylated aliphatic monohydric and polyhydric alcohols and ethoxylated aliphatic acids wherein the acids have about 5 to about 20 moles of ethylene oxide added per mole of acid and wherein the alcohols and acids have carbon chain lengths of 8 to 36 carbon atoms and wherein the esters are produced by first polyoxyethylating at least one of the acids or …
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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
- Granted September 16, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 16, 1997.
- 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.