Claims
- 1. A thiophene corresponding to formula (I) ##STR4## in which R is a hydrogen atom or a C.sub.1 -C.sub.4 alkyl group and R' is --(CH.sub.2).sub.n --SO.sub.3 M with n=2 to 12 and M=H, Li, Na, K, Rb, Cs, NH.sub.4.
- 2. A bithiophene corresponding to formula (IIa) ##STR5## in which R is a hydrogen atom or a C.sub.1 -C.sub.4 alkyl group and R' is --(CH.sub.2).sub.n --SO.sub.3 M with n=2 to 12 and M=H, Li, Na, K, Rb, Cs, NH.sub.4.
- 3. A bithiophene corresponding to formula (IIb) ##STR6## in which R is a hydrogen atom or a C.sub.1 -C.sub.4 alkyl group and R' is --(CH.sub.2).sub.n --SO.sub.3 M with n=2 to 12 and M=H, Li, Na, K, Rb, Cs, NH.sub.4.
- 4. A polymer comprising recurring units of formula (III) ##STR7## in which R is a hydrogen atom or a C.sub.1 -C.sub.4 alkyl group and R' is --(CH.sub.2).sub.n --SO.sub.3 M with n=2 to 12 and M=H, Li, Na, K, Rb, Cs, NH.sub.4.
- 5. A polymer comprising recurring units of formula (IVa) ##STR8## in which R is a hydrogen atom or a C.sub.1 -C.sub.4 alkyl group and R' is --(CH.sub.2).sub.n --SO.sub.3 M with n=2 to 12 and M=H, Li, Na, K, Rb, Cs, NH.sub.4.
- 6. A polymer comprising recurring units of formula (IVb) ##STR9## in which R is a hydrogen atom or a C.sub.1 -C.sub.4 alkyl group and R' is --(CH.sub.2).sub.n --SO.sub.3 M with n=2 to 12 and M=H, Li, Na, K, Rb, Cs, NH.sub.4.
- 7. A process for the preparation of the thiophene of claim 1, comprising the steps of
- a) reacting a 3-bromothiophene with NaOCH.sub.3 in the presence of CuBr to form a 3-methoxythiophene,
- b) reacting the 3-methoxythiophene with an .omega.-haloalkanol in the presence of NaHSO.sub.4 to form a 3-(.omega.-haloalkoxy)thiophene,
- c) reacting the 3-(.omega.-haloalkoxy)thiophene with M.sub.2 SO.sub.3 (M=H, Li, Na, K, Rb, Cs, NH.sub.4) to form the thiophene of claim 1.
- 8. A process for the preparation of the bithiophene of claim 2, comprising the steps of
- a) reacting a 4,4'dibromo-2,2'-bithiophene with NaOCH.sub.3 in the presence of CuBr to form a 4,4'-dimethoxy-2,2'-bithiophene,
- b) reacting the 4,4'-dimethoxy-2,2'-bithiophene with an .omega.-haloalkanol in the presence of NaHSO.sub.4 to form a 4,4'-di(.omega.-haloalkoxy)-2,2'-bithiophene,
- c) reacting the 4,4'-di(.omega.-haloalkoxy)-2,2'-bithiophene with M.sub.2 SO.sub.3 (M=H, Li, Na, K, Rb, Cs, NH.sub.4) to form the bithiophene of claim 2.
- 9. A process for the preparation of the bithiophene of claim 3, comprising the steps of
- a) reacting a 3,3'dibromo-2,2'-bithiophene with NaOCH.sub.3 in the presence of CuBr to form a 3,3'-dimethoxy-2,2'-bithiophene,
- b) reacting the 3,3'-dimethoxy-2,2'-bithiophene with an .omega.-haloalkanol in the presence of NaHSO.sub.4 to form a 3,3'-di(.omega.-haloalkoxy)-2,2'-bithiophene,
- c) reacting the 3,3'-di(.omega.-haloalkoxy)-2,2'-bithiophene with M.sub.2 SO.sub.3 (M=H, Li, Na, K, Rb, Cs, NH.sub.4) to form the bithiophene of claim 3.
- 10. A process for the preparation of the polymer of formula (III) by polymerizing the thiophenes of claim 1 in the presence of an oxidant.
- 11. A process for the preparation of the polymer of formula (IVa) by polymerizing the bithiophenes of claim 2 in the presence of an oxidant.
- 12. A process for the preparation of the polymer of formula (IVb) by polymerizing the bithiophenes of claim 3 in the presence of an oxidant.
- 13. An anti-static coating or EMI shielding comprising the polymer of claim 4.
- 14. An anti-static coating or EMI shielding comprising the polymer of claim 5.
- 15. An anti-static coating or EMI shielding comprising the polymer of claim 6.
Parent Case Info
This is a Continuation of a Provisional application Ser. No. 60/022,307 filed on Jul. 22, 1996.
PCT Information
Filing Document |
Filing Date |
Country |
Kind |
102e Date |
371c Date |
PCT/CA97/00477 |
7/3/1997 |
|
|
1/15/1999 |
1/15/1999 |
Publishing Document |
Publishing Date |
Country |
Kind |
WO98/03499 |
1/29/1998 |
|
|
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