Ethylene copolymer and nitrogen derivative of hydrocarbyl substituted succinic acid to improve flow of fuel oil
CA 1105262 A · Owner: Exxon Reseach And Engineering Company · Inventors: Ilnyckyj, Stephan
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Combinations of an oil-soluble aliphatic copolymer having the property of a nucleator for wax crystallization e.g. an ethylene-vinyl acetate copolymerhaving a number average molecular weight within the range of 500-50,000 in com-bination with an oil-soluble hydrocarbyl-substituted succinic acid which has been reacted with a nitrogen material to form either an amine salt or an amide or a mixture thereof wherein the hydrocarbyl groups contain 8 to 28 carbon atoms are useful in improving the cold flow properties of distillate hydrocarbon oils.
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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 July 21, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 21, 1998.
- 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.