Conductive polymer for solid electrolyte capacitor
View Patent ↗[Problem] To provide a conductive polymer for solid electrolyte capacitor having outstanding solubility in solvents or dispersibility in solvents and which can produce a capacitor having outstanding capacitor characteristics in high-temperature environments. [Means Used to Resolve the Problem] A conductive polymer (A) for solid electrolyte capacitor containing substituted polythiophene (P) having thiophene repeating units (D) substituted by a least one type of group (s) selected from a group made up of a polyether group (a) indicated in general formula (1); an alkoxy group (b) having 1 to 15 carbon atoms; an alkoxy alkyl group (c) indicated in general formula (2); an alkyl group (d) having 1 to 15 carbon atoms; and a group (e) indicated in general formula (3); as well as thiophene repeating units (E) wherein the hydrogen atoms at position 3 and position 4 on the thiophene ring have been substituted by group (s) and sulfo group (—SO 3 H) (f). —(OR 1 ) k —OR 2 (1) —R 3 —OR 4 (2) —R 5 —(OR 6 ) m —OR 7 (3)
1. A conductive composition for a solid electrolyte capacitor comprising a conductive polymer (A) for the solid electrolyte capacitor; a basic compound (B); and a solvent (C);
wherein the conductive polymer (A) for the solid electrolyte capacitor contains substituted polythiophene (P) comprising thiophene repeating units (D) wherein the hydrogen atoms at position 3 and/or position 4 of the thiophene ring of the repeat unit are substituted by at least one type of group (s) selected from a group made up of:
(a) a polyether group (a) indicated by the following general formula (1):
—(OR 1 ) k —OR 2 (1)
where OR 1 is an oxyalkylene having 2 to 4 carbon atoms; R 2 is an alkyl group having 1 to 15 carbon atoms; and k is an integer from 1 to 9;
(b) an alkoxy group (b) having 1 to 15 carbon atoms;
(c) an alkoxy alkyl group (c) indicated by the following general formula (2):
—R 3 —OR 4 (2)
where R 3 is a straight-chain or branching alkylene group having 1 to 4 carbon atoms; R 4 is a straight-chain or branching alkyl group with 1 to 15 carbon atoms;]
(d) an alkyl group (d) having 1 to 15 carbon atoms; and
(e) a group (e) indicated by general formula (3):
—R 5 —(OR 6 ) m —OR 7 (3)
where R 5 is straight-chain or branching alkylene group having 1 to 4 carbon atoms; OR 6 is an oxyalkylene group having 2 to 4 carbon atoms; R 7 is an alkyl group having 1 to 15 carbon atoms; m is an integer from 1 to 9; and
thiophene repeating units (E) wherein the hydrogen atoms at position 3 and/or position 4 of the thiophene ring are substituted by the group (s) and a sulfonate group (f).
2. The composition of claim 1 , wherein the amount of (A) relative to the solid electrolyte capacitor conductive polymer (A); basic compound (B); and solvent (C) is 0.01 to 15 weight %.
3. The composition of claim 1 , wherein the composition further comprises a dispersant (Q).
4. The composition of claim 3 , wherein the amount of (A) relative to the solid electrolyte capacitor conductive polymer (A); basic compound (B); and solvent (C); and dispersant (Q) is 0.01 to 15 weight %.
5. The composition of claim 3 , wherein the composition further comprises a dopant (F) which is not repeat unit E.
6. The composition of claim 1 , wherein the group (s) is selected from (a) and not from (b), (c), (d), and (e).
7. The composition of claim 1 , wherein the group (s) is selected from (b) and not from (a), (c), (d), and (e).
8. The composition of claim 1 , wherein the group (s) is selected from (c) and not from (a), (b), (d), and (e).
9. The composition of claim 1 , wherein the group (s) is selected from (d) and not from (a), (b), (c), and (e).
10. The composition of claim 1 , wherein the group (s) is selected from (e) and not from (a), (b), (c), and (d).
11. A solid electrolyte capacitor electrode prepared by coating a film from the composition of claim 1 on a porous substrate.
12. A solid electrolyte capacitor comprising an electrode according to claim 11 .
13. A solid electrolyte capacitor electrode prepared by coating a film from the composition of claim 3 on a porous substrate.
14. A solid electrolyte capacitor comprising an electrode according to claim 13 .
15. A solid electrolyte capacitor electrode prepared by coating a film from the composition of claim 5 on a porous substrate.
16. A solid electrolyte capacitor comprising an electrode according to claim 15 .
17. A solid electrolyte capacitor electrode comprising a film comprising conductive polymer (A); a basic compound (B); and a dispersant (Q); on a porous substrate;
wherein the conductive polymer (A) for the solid electrolyte capacitor contains substituted polythiophene (P) comprising thiophene repeating units (D) wherein the hydrogen atoms at position 3 and/or position 4 of the thiophene ring of the repeat unit are substituted by at least one type of group (s) selected from a group made up of:
(a) a polyether group (a) indicated by the following general formula (1):
—(OR 1 ) k —OR 2 (1)
where OR 1 is an oxyalkylene having 2 to 4 carbon atoms; R 2 is an alkyl group having 1 to 15 carbon atoms; and k is an integer from 1 to 9;
(b) an alkoxy group (b) having 1 to 15 carbon atoms;
(c) an alkoxy alkyl group (c) indicated by the following general formula (2):
—R 3 —OR 4 (2)
where R 3 is a straight-chain or branching alkylene group having 1 to 4 carbon atoms; R 4 is a straight-chain or branching alkyl group with 1 to 15 carbon atoms;]
(d) an alkyl group (d) having 1 to 15 carbon atoms; and
(e) a group (e) indicated by general formula (3):
—R 5 —(OR 6 ) m —OR 7 (3)
where R 5 is straight-chain or branching alkylene group having 1 to 4 carbon atoms; OR 6 is an oxyalkylene group having 2 to 4 carbon atoms; R 7 is an alkyl group having 1 to 15 carbon atoms; m is an integer from 1 to 9; and
thiophene repeating units (E) wherein the hydrogen atoms at position 3 and/or position 4 of the thiophene ring are substituted by the group (s) and a sulfonate group (f).
18. The solid electrolyte capacitor electrode according to claim 17 , wherein the film has a film thickness of 0.05 microns to 100 microns.
19. The solid electrolyte capacitor comprising the electrode of claim 18 .
20. A solid electrolyte capacitor comprising an electrode comprising a film comprising conductive polymer (A); and a basic compound (B); and a dispersant (Q); on a porous substrate;
wherein the conductive polymer (A) for the solid electrolyte capacitor contains substituted polythiophene (P) wherein the hydrogen atoms at position 3 and/or position 4 of a thiophene ring have thiophene repeating units (D) which have been substituted by at least one type of group (s) selected from a group made up of:
(a) a polyether group (a) indicated by the following general formula (1):
—(OR 1 ) k —OR 2 (1)
where OR 1 is an oxyalkylene having 2 to 4 carbon atoms; R 2 is an alkyl group having 1 to 15 carbon atoms; and k is an integer from 1 to 9;
(b) an alkoxy group (b) having 1 to 15 carbon atoms;
(c) an alkoxy alkyl group (c) indicated by the following general formula (2):
—R 3 —OR 4 (2)
where R 3 is a straight-chain or branching alkylene group having 1 to 4 carbon atoms; R 4 is a straight-chain or branching alkyl group with 1 to 15 carbon atoms;]
(d) an alkyl group (d) having 1 to 15 carbon atoms; and
(e) a group (e) indicated by general formula (3):
—R 5 —(OR 6 ) m —OR 7 (3)
where R 5 is straight-chain or branching alkylene group having 1 to 4 carbon atoms; OR 6 is an oxyalkylene group having 2 to 4 carbon atoms; R 7 is an alkyl group having 1 to 15 carbon atoms; m is an integer from 1 to 9; and
thiophene repeating units (E) wherein the hydrogen atoms at position 3 and/or position 4 of the thiophene ring are substituted by the group (s) and a sulfonate group (f).