Use of tetrahydroberizoxazines as stabilisers

US9217115B2 · US · B2

Patent metadata
FieldValue
Publication numberUS-9217115-B2
Application numberUS-99607806-A
CountryUS
Kind codeB2
Filing dateJul 18, 2006
Priority dateJul 26, 2005
Publication dateDec 22, 2015
Grant dateDec 22, 2015

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  2. Abstract

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Abstract

Official abstract text for this publication.

The use of tetrahydrobenzoxazines I where R 1 is a hydrocarbyl radical and R 2 , R 3 , R 4 and R 5 are each independently hydrogen atoms, hydroxyl groups or hydrocarbyl radicals, and where R 2 to R 5 may also form a second and a third tetrahydrooxazine ring, with the proviso that at least one of the substituents has from 4 to 3000 carbon atoms and the remaining substituents, when they are hydrocarbyl radicals, each have from 1 to 20 carbon atoms, as stabilizers for stabilizing inanimate organic material, especially turbine fuels, against the action of light, oxygen and heat.

First claim

Opening claim text (preview).

What is claimed is: 1. An antioxidant for stabilizing mineral oil products and fuels against the action of light, oxygen and heat, comprising: a tetrahydrobenzoxazine of formula I wherein R 1 is a polyisobutene having a M n of from 200 to 40,000, R 2 , R 3 , R 4 and R 5 are each independently hydrogen atoms, hydroxyl groups or hydrocarbyl radicals wh…

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Classifications

  • Chemistry & Metallurgy · mapped topic

  • Chemistry & Metallurgy · mapped topic

  • Chemistry & Metallurgy · mapped topic

  • Chemistry & Metallurgy · mapped topic

  • C10L1/22Primary

    Chemistry & Metallurgy · mapped topic

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What does patent US9217115B2 cover?
The use of tetrahydrobenzoxazines I where R 1 is a hydrocarbyl radical and R 2 , R 3 , R 4 and R 5 are each independently hydrogen atoms, hydroxyl groups or hydrocarbyl radicals, and where R 2 to R 5 may also form a second and a third tetrahydrooxazine ring, with the proviso that at least one of the substituents has from 4 to 3000 carbon atoms and the r…
Who is the assignee on this patent?
Lange Arno, Mach Helmut, Rath Hans Peter, and 2 more
What technology area does this patent fall under?
Primary CPC classification C10L1/22. Mapped technology areas include Chemistry & Metallurgy.
When was this patent published?
Publication date Tue Dec 22 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
What related patents are in patentsdb?
We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).