Chitin and alginate composite fibers
US-2016082141-A1 · Mar 24, 2016 · US
Ionic liquid and method for dissolving cellulose using the same
US10119173B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10119173-B2 |
| Application number | US-201715671176-A |
| Country | US |
| Kind code | B2 |
| Filing date | Aug 8, 2017 |
| Priority date | Oct 18, 2016 |
| Publication date | Nov 6, 2018 |
| Grant date | Nov 6, 2018 |
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- Title
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Abstract
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The present invention provides an ionic liquid represented by the following chemical formula, [(CH 3 ) 3 N(CH 2 ) 2 OH] + [NH 2 (CH 2 ) 3 CH(NH 2 )COO] − . The present invention provides an ionic liquid capable of dissolving cellulose within twenty-four hours.
First claim
Opening claim text (preview).
The invention claimed is: 1. A method for dissolving cellulose, the method comprising: (a) adding cellulose to ionic liquid represented by the following chemical formula (I): [(CH 3 ) 3 N(CH 2 ) 2 OH] + [NH 2 (CH 2 ) 3 CH(NH 2 )COO] − (I). 2. The method according to claim 1 , further comprising: (b1) heating the ionic liquid to which the cellulose has been added to dissolve the cellulose in the ionic liquid after the step (a). 3. The method according to claim 1 , further comprising: (b2) leaving the ionic liquid to which the cellulose has been added at rest to dissolve the cellulose in the ionic liquid after the step (a). 4. The method according to claim 1 , further comprising: (b3) stirring the ionic liquid to which the cellulose has been added to dissolve the cellulose in the ionic liquid after the step (a). 5. The method according to claim 1 , wherein cellulose is dissolved in the ionic liquid within twenty-four hours after the step (a). 6. A method for dissolving cellulose, the method comprising: (a) adding cellulose to an ionic liquid composition containing an ionic liquid represented by the following chemical formula (I): [(CH 3 ) 3 N(CH 2 ) 2 OH] + [NH 2 (CH 2 ) 3 CH(NH 2 )COO] − (I). 7. The method according to claim 6 , further comprising: (b1) heating the ionic liquid composition to which the cellulose has been added to dissolve the cellulose in the ionic liquid after the step (a). 8. The method according to claim 6 , further comprising: (b2) leaving the ionic liquid composition to which the cellulose has been added at rest to dissolve the cellulose in the ionic liquid after the step (a)′. 9. The method according to claim 6 , further comprising: (b3) stirring the ionic liquid composition to which the cellulose has been added to dissolve the cellulose in the ionic liquid after the step (a). 10. The method according to claim 6 , wherein the cellulose is dissolved in the ionic liquid composition within twenty-four hours after the step (a). 11. The method according to claim 6 , wherein the ionic liquid composition contains water, and weight ratio of the water to the ionic liquid is not more than 4.3%. 12. The method according to claim 6 , wherein the ionic liquid composition contains an aprotic polar solvent. 13. The method according to claim 12 , wherein the aprotic polar solvent is dimethyl sulfoxide. 14. The method according to claim 13 , wherein weight ratio of the dimethyl sulfoxide to the ionic liquid is not more than 309%.
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Classifications
having more than one amino group bound to the carbon skeleton, e.g. lysine · CPC title
with at least one amino group and one carboxyl group bound to the same carbon atom of the carbon skeleton · CPC title
- C07C215/08Primary
with only one hydroxy group and one amino group bound to the carbon skeleton · CPC title
Use of organic ingredients · CPC title
Preparatory treatment of cellulose for making derivatives thereof {, e.g. pre-treatment, pre-soaking, activation} · CPC title
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Frequently asked questions
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- What does patent US10119173B2 cover?
- The present invention provides an ionic liquid represented by the following chemical formula, [(CH 3 ) 3 N(CH 2 ) 2 OH] + [NH 2 (CH 2 ) 3 CH(NH 2 )COO] − . The present invention provides an ionic liquid capable of dissolving cellulose within twenty-four hours.
- Who is the assignee on this patent?
- Panasonic Ip Man Co Ltd
- What technology area does this patent fall under?
- Primary CPC classification C07C215/08. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Tue Nov 06 2018 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 2 related publications on this page (citations in our corpus or others sharing the same primary CPC).