Compacted liquid laundry detergent composition
US-2016355752-A1 · Dec 8, 2016 · US
Fabric softener active composition and method for making it
US9441187B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9441187-B2 |
| Application number | US-201314398962-A |
| Country | US |
| Kind code | B2 |
| Filing date | Apr 24, 2013 |
| Priority date | May 7, 2012 |
| Publication date | Sep 13, 2016 |
| Grant date | Sep 13, 2016 |
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Abstract
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Reacting at least one tris-(2-hydroxyethyl)-amine fatty acid ester with dimethylsulfate at a molar ratio of dimethylsulfate to amine nitrogen of from 0.79 to 0.94 until the reaction mixture has a total amine number of from 7 to 20 mg KOH/g provides novel fabric softener active compositions with a low content of methanol, comprising from 65 to 98% by weight of tris-(2-hydroxyethyl)-methylammonium methylsulfate fatty acid esters and from 1 to 1500 ppm methanol.
First claim
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The invention claimed is: 1. A fabric softener active composition, comprising: a) from 65 to 98% by weight of at least one tris-(2-hydroxyethyl)-methylammonium methylsulfate fatty acid ester, b) at least one tris-(2-hydroxyethyl)-amine fatty acid ester in an amount providing a total amine number of the composition of from 7 to 20 mg KOH/g, and c) from 1 to 1500 ppm methanol. 2. The fabric softener active composition of claim 1 , comprising from 10 to 800 ppm methanol. 3. The fabric softener active composition of claim 1 , comprising said tris-(2-hydroxyethyl)-amine fatty acid esters in an amount providing a total amine number of the composition of from 8 to 13 mg KOH/g. 4. The fabric softener active composition of claim 1 , wherein said tris-(2-hydroxyethyl)-methylammonium methylsulfate fatty acid esters and said tris-(2-hydroxyethyl)-amine fatty acid esters have the same fatty acid moieties. 5. The fabric softener active composition of claim 1 , wherein said tris-(2-hydroxyethyl)-methylammonium methylsulfate fatty acid esters have an average molar ratio of fatty acid moieties to nitrogen of from 1.4 to 2.0. 6. The fabric softener active composition of claim 1 , wherein the fatty acids corresponding to the fatty acid moieties of said tris-(2-hydroxyethyl)-methylammonium methylsulfate fatty acid esters have an iodine value of from 0.5 to 120. 7. The fabric softener active composition of claim 1 , wherein the fatty acid moieties of said tris-(2-hydroxyethyl)-methylammonium methylsulfate fatty acid esters have an average chain length of from 16 to 18 carbon atoms. 8. The fabric softener active composition of claim 1 , wherein said tris-(2-hydroxyethyl)-methylammonium methylsulfate fatty acid esters comprise less than 10 mol-% polyunsaturated fatty acid moieties. 9. The fabric softener active composition of claim 1 , further comprising up to 35% by weight of a solvent selected from the group consisting of ethanol, 1-propanol, 2-propanol, ethylene glycol, diethylene glycol, propylene glycol, dipropylene glycol, C 1 -C 4 -alkyl monoethers of ethylene glycol and C 1 -C 4 -alkyl monoethers of propylene glycol. 10. A method for making a fabric softener active composition comprising from 65 to 98% by weight of tris-(2-hydroxyethyl)-methylammonium methylsulfate fatty acid esters and from 1 to 1500 ppm methanol, wherein at least one tris-(2-hydroxyethyl)-amine fatty acid ester is reacted with dimethylsulfate at a molar ratio of dimethylsulfate to amine nitrogen of from 0.79 to 0.94 until the reaction mixture has a total amine number of from 7 to 20 mg KOH/g. 11. The method of claim 10 , wherein said tris-(2-hydroxyethyl)-amine fatty acid esters are reacted with dimethylsulfate at a temperature of from 60 to 95° C. 12. The method of claim 10 , wherein said tris-(2-hydroxyethyl)-amine fatty acid esters have an average molar ratio of fatty acid moieties to nitrogen of from 1.4 to 2.0. 13. The method of claim 10 , wherein the fatty acid moieties of said tris-(2-hydroxyethyl)-amine fatty acid esters have an iodine value of from 0.5 to 120. 14. The method of claim 10 wherein the fatty acid moieties of said tris-(2-hydroxyethyl)-amine fatty acid esters have an average chain length of from 16 to 18 carbon atoms.
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- What does patent US9441187B2 cover?
- Reacting at least one tris-(2-hydroxyethyl)-amine fatty acid ester with dimethylsulfate at a molar ratio of dimethylsulfate to amine nitrogen of from 0.79 to 0.94 until the reaction mixture has a total amine number of from 7 to 20 mg KOH/g provides novel fabric softener active compositions with a low content of methanol, comprising from 65 to 98% by weight of tris-(2-hydroxyethyl)-methylammoniu…
- Who is the assignee on this patent?
- Evonik Industries Ag, Evonik Degussa Gmbh
- What technology area does this patent fall under?
- Primary CPC classification C11D3/20. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Sep 13 2016 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).