Dried biological compositions and methods thereof
US-2024349730-A1 · Oct 24, 2024 · US
Using novel amines to stabilize quaternary trialkylalkanolamines
US9670137B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9670137-B2 |
| Application number | US-201314347781-A |
| Country | US |
| Kind code | B2 |
| Filing date | Apr 8, 2013 |
| Priority date | Apr 13, 2012 |
| Publication date | Jun 6, 2017 |
| Grant date | Jun 6, 2017 |
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- Title
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Abstract
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New stabilizers for solutions of choline hydroxide and related quaternary trialkylalkanolamines are disclosed. The stabilizers are alkyl hydroxylamines, hydrazines, hydrazides, or derivates thereof, including compounds containing more than one such functionality. The new stabilizers are effective at concentrations less than about 1000 ppm, and choline hydroxide solutions stabilized with the compounds described herein typically have Gardner Color change less than about 2.0 after six months at reasonable temperatures.
First claim
Opening claim text (preview).
The invention claimed is: 1. A composition comprising a quaternary trialkylalkanolamine and a stabilizer selected from the group consisting of a hydrazide with a hydroxylamino substituent, a hydrazine with a hydroxylamino substituent and a mixture thereof. 2. The composition of claim 1 , wherein the quaternary trialkylalkanolamine is choline hydroxide. 3. The composition of claim 1 , wherein the stabilizer is hydrazine with a hydroxylamino substituent. 4. The composition of claim 1 , wherein the concentration of the stabilizer in the composition is not more than about 500 ppm. 5. The composition of claim 1 , wherein the concentration of the stabilizer in the composition is not more than about 300 ppm. 6. The composition of claim 1 , wherein the composition has a Gardner Color change less than about 2.0 after 6 months.
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Classifications
containing nitrogen and oxygen · CPC title
- A01N25/22Primary
containing ingredients stabilising the active ingredients · CPC title
by reaction of ammonia or amines with olefin oxides or halohydrins · CPC title
with quaternised nitrogen atoms bound to carbon atoms of the carbon skeleton · CPC title
containing an amine or imine moiety · CPC title
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- What does patent US9670137B2 cover?
- New stabilizers for solutions of choline hydroxide and related quaternary trialkylalkanolamines are disclosed. The stabilizers are alkyl hydroxylamines, hydrazines, hydrazides, or derivates thereof, including compounds containing more than one such functionality. The new stabilizers are effective at concentrations less than about 1000 ppm, and choline hydroxide solutions stabilized with the com…
- Who is the assignee on this patent?
- Huntsman Petrochemical Llc
- What technology area does this patent fall under?
- Primary CPC classification A01N25/22. Mapped technology areas include Human Necessities.
- When was this patent published?
- Publication date Tue Jun 06 2017 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).