CA2199703A1 - Perfluorinated polymide, perfluorinated poly (amic acid), starting compounds therefor, and methods for preparing them - Google Patents
Perfluorinated polymide, perfluorinated poly (amic acid), starting compounds therefor, and methods for preparing themInfo
- Publication number
- CA2199703A1 CA2199703A1 CA 2199703 CA2199703A CA2199703A1 CA 2199703 A1 CA2199703 A1 CA 2199703A1 CA 2199703 CA2199703 CA 2199703 CA 2199703 A CA2199703 A CA 2199703A CA 2199703 A1 CA2199703 A1 CA 2199703A1
- Authority
- CA
- Canada
- Prior art keywords
- perfluorinated
- preparing
- methods
- bis
- amic acid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Macromolecular Compounds Obtained By Forming Nitrogen-Containing Linkages In General (AREA)
Abstract
A perfluorinated polyimide comprising a repeating unit represented by general formula (1):
(see fig. I) and a perfluorinated poly(amic acid) comprising a repeating unit represented by general formula (6):
(see fig. II) wherein R1 is a tetravalent organic group; and R2 is a divalent organic group, provided that chemical bonds between carbon atoms and monovalent elements contained in R1 and R2 are exclusively carbon-to-fluorine bonds; methods for preparing them; and optical material including the perfluorinated polyimide. 1,4-Bis(3,4-dicarboxytrifluorophenoxy)-tetrafluorobenzene dianhydride, 1,4-difluoropyro-mellitic anhydride, 1,4-bis(3,4-dicarboxytrifluoro-phenoxy)tetrafluorobenzene, 1,4-difluoropyromellitic acid, and 1,4-bis(3,4-dicyanotrifluorophenoxy)tetra-fluorobenzene as well as methods preparing them. The perfluorinated polyimide has a thermal stability and has a low optical loss in an optical communication wavelength region (0.8 to 1.7 µm).
(see fig. I) and a perfluorinated poly(amic acid) comprising a repeating unit represented by general formula (6):
(see fig. II) wherein R1 is a tetravalent organic group; and R2 is a divalent organic group, provided that chemical bonds between carbon atoms and monovalent elements contained in R1 and R2 are exclusively carbon-to-fluorine bonds; methods for preparing them; and optical material including the perfluorinated polyimide. 1,4-Bis(3,4-dicarboxytrifluorophenoxy)-tetrafluorobenzene dianhydride, 1,4-difluoropyro-mellitic anhydride, 1,4-bis(3,4-dicarboxytrifluoro-phenoxy)tetrafluorobenzene, 1,4-difluoropyromellitic acid, and 1,4-bis(3,4-dicyanotrifluorophenoxy)tetra-fluorobenzene as well as methods preparing them. The perfluorinated polyimide has a thermal stability and has a low optical loss in an optical communication wavelength region (0.8 to 1.7 µm).
Applications Claiming Priority (9)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP256,843/1990 | 1990-09-28 | ||
| JP25684390 | 1990-09-28 | ||
| JP10655291 | 1991-04-12 | ||
| JP10655791 | 1991-04-12 | ||
| JP10655491 | 1991-04-12 | ||
| JP106,552/1991 | 1991-04-12 | ||
| JP106,557/1991 | 1991-04-12 | ||
| JP106,554/1991 | 1991-04-12 | ||
| CA002052368A CA2052368C (en) | 1990-09-28 | 1991-09-26 | Perfluorinated polyimide, perfluorinated poly(amic acid), starting compounds therefor, and methods for preparing them |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002052368A Division CA2052368C (en) | 1990-09-28 | 1991-09-26 | Perfluorinated polyimide, perfluorinated poly(amic acid), starting compounds therefor, and methods for preparing them |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2199703A1 true CA2199703A1 (en) | 1992-03-29 |
| CA2199703C CA2199703C (en) | 2000-10-31 |
Family
ID=27508440
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002199703A Expired - Lifetime CA2199703C (en) | 1990-09-28 | 1991-09-26 | Perfluorinated polymide, perfluorinated poly (amic acid), starting compounds therefor, and methods for preparing them |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2199703C (en) |
-
1991
- 1991-09-26 CA CA002199703A patent/CA2199703C/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| CA2199703C (en) | 2000-10-31 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKEX | Expiry |