Fuel additive compositions containing mannich condensation products and hydrocarbyl-substituted polyoxyalkylene amines
CA 2334508 A1 · Owner: Chevron Chemical Company Llc · Inventors: Morris, Jack E.; Ahmadi, Majid R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A novel fuel additive composition comprising: (a) a Mannich condensation product of (1) a high molecular weight alkyl-substituted hydroxyaromatic compound wherein the alkyl group has a number average molecular weight of from about 300 to about 5,000 (2) an amine which contains an amino group having at least one active hydrogen atom, and (3) an aldehyde, wherein the respective molar ratio of reactants (1), (2) and (3) is 1:0.1-10:0.1-10; and (b) a hydrocarbyl-substituted polyoxyalkylene amine having the formula: (see formula I), or a fuel-soluble salt thereof; wherein R is a hydrocarbyl group having from about 1 to about 30 carbon atoms;, one of R1 and R2 is methyl or ethyl and the other is …
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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 February 8, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 8, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 8, 2023.
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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.