Method for synthesizing ionic liquids having a carbonate functional group and ionic liquids thus obtained
US-2015380771-A1 · Dec 31, 2015 · US
US9617223B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9617223-B2 |
| Application number | US-201213725371-A |
| Country | US |
| Kind code | B2 |
| Filing date | Dec 21, 2012 |
| Priority date | Dec 29, 2011 |
| Publication date | Apr 11, 2017 |
| Grant date | Apr 11, 2017 |
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The present invention provides a base generator having the structure of formula (1): wherein R 1 , R 2 , R 3 , R 4 , R 5 , and Y {circle around (−)} are defined as in the specification. The base generator of the present invention can be used for imidization of a polyimide precursor, promoting crosslinking of epoxy monomers, or crosslinking of polyurethane or polyurea.
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What is claimed is: 1. A base generator having the structure of formula (1): wherein R 1 is H, linear or branched C 1 -C 6 alkyl, linear or branched C 1 -C 6 haloalkyl, linear or branched C 1 -C 6 alkyl substituted with one or more C 6 -C 14 aryl, and R 2 is wherein R 6 is branched C 1 -C 6 alkyl, linear or branched C 1 -C 6 haloalkyl, linear or branched C 1 -C 8 alkoxy unsubstituted or substituted with one or more C 6 -C 14 aryl, or —NR 10 R 11 , and R 7 , R 8 , R 10 and R 11 are the same or different, and are each independently H, linear or branched C 1 -C 14 alkyl unsubstituted or substituted with one or more C 6 -C 14 aryl, or C 6 -C 14 aryl, and R 9 is H, linear or branched C 1 -C 14 alkyl substituted with one or more C 6 -C 14 aryl, or C 6 -C 14 aryl; R 3 , R 4 and R 5 are the same or different, and are each independently H, linear or branched C 1 -C 6 alkyl unsubstituted or substituted with one or more C 6 -C 14 aryl, linear or branched C 1 -C 6 hydroxyalkyl, linear or branched C 1 -C 6 cyanoalkyl, or C 6 -C 14 aryl; and Y {circle around (−)} is an anionic group. 2. The base generator according to claim 1 , wherein R 1 is linear or branched C 1 -C 6 alkyl, and R 2 is wherein R 6 is branched C 1 -C 6 alkyl, linear or branched C 1 -C 6 haloalkyl, linear or branched C 1 -C 8 alkoxy unsubstituted or substituted with one or more C 6 -C 14 aryl, or —NR 10 R 11 ; and R 7 , R 8 , R 10 and R 11 are the same or different and are each independently H, linear or branched C 1 -C 14 alkyl unsubstituted or substituted with one or more C 6 -C 14 aryl, or C 6 -C 14 aryl; and R 9 is H, linear or branched C 1 -C 14 alkyl substituted with one or more C 6 -C 14 aryl, or C 6 -C 14 aryl. 3. The base generator according to claim 1 , wherein R 1 is methyl, ethyl, propyl, butyl or selected from a group consisting of: and R 2 is 4. The base generator according to claim 1 , wherein R 1 is methyl, ethyl or selected from a group consisting of: 5. The base generator according to claim 1 , wherein R 3 , R 4 and R 5 are the same or different and are each independently H, methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, tert-butyl, pentyl, hexyl, hydroxymethyl, hydroxyethyl, hydroxypropyl, hydroxybutyl, hydroxypentyl, hydroxyhexyl, cyanomethyl, cyanoethyl, cyanopropyl, cyanobutyl, cyanopentyl, cyanohexyl, phenyl, benzyl or diphenylmethyl. 6. The base generator according to claim 1 , wherein R 3 , R 4 and R 5 are the same or different and are each independently H, methyl, ethyl, n-propyl or isopropyl. 7. The base generator according to claim 1 , wherein the anionic group is selected from a group consisting of halide ion, sulfate, nitrate, phosphate, sulfonate, carbonate, tetrafluoborate, borate, chlorate, iodate, hexafluorophosphate, perchlorate, trifluoromethanesulfonate, trifluoroacetate, acetate, tert-butylcarbonate, (CF 3 SO 2 ) 2 N − and tert-butyloxy. 8. The base generator according to claim 1 , wherein the anionic group is a halide ion or tetrafluoroborate. 9. The base generator according to claim 1 , which is an optical base generator or a thermal base generator. 10. A base generator having the structure of formula (1): wherein R 1 is H, or linear or branched C 1 -C 6 haloalkyl, and R 2 is linear or branched C 1 -C 6 alkyl substituted with one or more C 6 -C 14 aryl, wherein R 7 and R 8 are the same or different, and are each independently H, linear or branched C 1 -C 14 alkyl unsubstituted or substituted with one or more C 6 -C 14 aryl, or C 6 -C 14 aryl, and R 9 is H, linear or branched C 1 -C 14 alkyl substituted with one or more C 6 -C 14 aryl, or C 6 -C 14 aryl; R 3 , R 4 and R 5 are the same or different, and are each independently H, linear or branched C 1 -C 6 alkyl unsubstituted or substituted with one or more C 6 -C 14 aryl, linear or branched C 1 -C 6 hydroxyalkyl, linear or branched C 1 -C 6 cyanoalkyl, or C 6 -C 14 aryl; and Y {circle around (−)} is an anionic group. 11. The base generator according to claim 1 , wherein R 1 is linear or branched C 1 -C 6 alkyl. 12. The base generator according to claim 10 , wherein R 1 is linear or branched C 1 -C 6 haloalkyl. 13. The base generator according to claim 1 , wherein R 1 is linear or branched C 1 -C 6 alkyl substituted with one or more C 6 -C 14 aryl,
with hydrocarbon radicals, substituted by oxygen or sulfur atoms, attached to ring nitrogen atoms · CPC title
Unsaturated polyimide precursors · CPC title
Preparatory processes · CPC title
Preparatory processes · CPC title
Carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals · CPC title
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