US10612188B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10612188-B2 |
| Application number | US-201615547821-A |
| Country | US |
| Kind code | B2 |
| Filing date | Feb 5, 2016 |
| Priority date | Feb 6, 2015 |
| Publication date | Apr 7, 2020 |
| Grant date | Apr 7, 2020 |
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The invention relates to an alkoxylated polyethyleneimine hydrophilically-modified fiber, wherein the alkoxylated polyethyleneimine has a weight average molecular weight of 600 to 25,000 and contains 1 to 40 alkylene oxide units per nitrogen atom. The invention also relates to a method of improving hydrophilicity of fiber comprising impregnating the fiber with an aqueous solution containing an alkoxylated polyethyleneimine, wherein the alkoxylated polyethyleneimine has a weight average molecular weight of 600 to 25,000 and contains 1 to 40 alkylene oxide units per nitrogen atom. The invention also relates to use of the alkoxylated polyethyleneimine in improving hydrophilicity of fiber.
Opening claim text (preview).
The invention claimed is: 1. An alkoxylated polyethyleneimine hydrophilically-modified fiber, wherein the alkoxylated polyethyleneimine has a weight average molecular weight of 2,000 to 20,000 and contains 10 to 40 alkylene oxide units per nitrogen atom. 2. The alkoxylated polyethyleneimine hydrophilically-modified fiber according to claim 1 , wherein the fiber comprises at least one of a polyamide, a polyester, a cotton fabric, and combinations thereof. 3. The alkoxylated polyethyleneimine hydrophilically-modified fiber according to claim 1 , wherein the alkoxylated polyethyleneimine contains 10 to 30 alkylene oxide units per nitrogen atom. 4. The alkoxylated polyethyleneimine hydrophilically-modified fiber according to claim 1 , wherein the alkoxylated polyethyleneimine comprises ethoxylated polyethyleneimine, propoxylated polyethyleneimine, butoxylated polyethyleneimine, and combination thereof. 5. A method of improving hydrophilicity of fiber comprising impregnating the fiber with an aqueous solution containing an alkoxylated polyethyleneimine, wherein the alkoxylated polyethyleneimine has a weight average molecular weight of 2,000 to 20,000 and contains 10 to 40 alkylene oxide units per nitrogen atom. 6. The method according to claim 5 , wherein the alkoxylated polyethyleneimine contains 10 to 30 alkylene oxide units per nitrogen atom. 7. The method according to claim 5 , wherein the fiber comprises at least one of a polyamide, a polyester, a cotton fabric, and combinations thereof. 8. The method according to claim 5 , wherein the aqueous solution comprises 1-8 g/L alkoxylated polyethyleneimine based on the total weight of the aqueous solution. 9. The alkoxylated polyethyleneimine hydrophilically-modified fiber according to claim 1 , wherein the alkoxylated polyethyleneimine has a weight average molecular weight of 5,000 to 15,000. 10. The alkoxylated polyethyleneimine hydrophilically-modified fiber according to claim 1 , wherein the alkoxylated polyethyleneimine contains 18 to 22 alkylene oxide units per nitrogen atom. 11. The method according to claim 5 , wherein the alkoxylated polyethyleneimine comprises ethoxylated polyethyleneimine, propoxylated polyethyleneimine, butoxylated polyethyleneimine, and combination thereof. 12. The method according to claim 5 , wherein the alkoxylated polyethyleneimine has a weight average molecular weight of 5,000 to 15,000. 13. The method according to claim 5 , wherein the alkoxylated polyethyleneimine contains 18 to 22 alkylene oxide units per nitrogen atom. 14. The method according to claim 5 , wherein the aqueous solution comprises 2.5-6 g/L alkoxylated polyethyleneimine based on the total weight of the aqueous solution.
Polyamines {polyimines} · CPC title
containing amino groups · CPC title
Polyesters · CPC title
Polyamides · CPC title
Polyethers (polyacetals D06M15/39) · CPC title
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