Phosphorylated thermal stability additives for distillate fuels
CA 2308554 A1 · Owner: Schwab, Scott D. · Inventors: Schwab, Scott D.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention is directed to the use of a reaction product of a hydrocarbyl dicarboxylic, acid, or derivative thereof a polyhydroxyl compound and a phosphorus compound. A, representative additive is prepared by reacting polyisobutenyl succinic anhydride (molecular, weight of about 1050 gms/mole); a polyhydroxyl compound such as , pentaerythritol; and an, organic phosphorus compound such as diethyl phosphite. The additive is used in diesel and jet, fuels to reduce the formation of gums and other thermal degradation products. The additives of, the present invention are economical to produce and provide effective protection to the fuels at, treat rates as low as 10 mg/liter. The …
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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 May 16, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 16, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 16, 2022.
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Timeline
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.