Claims
- 1. A film- or fiber-forming polymer comprising recurring units of the formula: ##STR38## where Mu is a divalent radical having the formula ##STR39## where each of D, D', E and E' is hydrogen, alkyl or substituted-alkyl; and Az is a divalent radical having the formula ##STR40## where each of Y and Y' represent the atoms necessary to complete with the nitrogen atoms to which they are bonded a piperazine or substituted-piperazine radical.
- 2. The film- or fiber-forming polymer of claim 1 wherein each of D, D', E and E' is hydrogen.
- 3. The film- or fiber-forming polymer of claim 2 wherein each of Y and Y' represent the atoms necessary to complete with the nitrogen atoms to which they are bonded the piperazine radical.
- 4. The film- or fiber-forming polymer of claim 2 wherein each of Y and Y' represent the atoms necessary to complete with the nitrogen atoms to which they are bonded the 2-methylpiperazine radical.
- 5. The film- or fiber-forming polymer of claim 2 wherein each of Y and Y' represent the atoms necessary to complete with the nitrogen atoms to which they are bonded the 2,5-dimethylpiperazine radical.
- 6. The film- or fiber-forming polymer of claim 1 wherein each of D and E' is methyl and each of D' and E is hydrogen.
- 7. The film- or fiber-forming polymer of claim 6 wherein each of Y and Y' represent the atoms necessary to complete with the nitrogen atoms to which they are bonded the piperazine radical.
- 8. The film- or fiber-forming polymer of claim 6 wherein each of Y and Y' represent the atoms necessary to complete with the nitrogen atoms to which they are bonded the 2-methylpiperazine radical.
- 9. The film- or fiber-forming polymer of claim 6 wherein each of Y and Y' represent the atoms necessary to complete with the nitrogen atoms to which they are bonded the 2,5-dimethylpiperazine radical.
- 10. A birefringent molecularly oriented polymer in the form of a film or fiber comprising recurring units of the formula: ##STR41## where Mu is a divalent radical having the formula ##STR42## where each of D, D', E and E' is hydrogen, alkyl or substituted-alkyl; and Az is a divalent radical having the formula ##STR43## where each of Y and Y' represent the atoms necessary to complete with the nitrogen atoms to which they are bonded a piperazine or substituted-piperazine radical.
- 11. The birefringent molecularly oriented polymeric film or fiber of claim 10 wherein each of D, D', E and E' is hydrogen.
- 12. The birefringent molecularly oriented polymeric film or fiber of claim 11 wherein each of Y and Y' represent the atoms necessary to complete with the nitrogen atoms to which they are bonded a substituted-piperazine radical selected from the group consisting of piperazine, 2-methylpiperazine and 2,5-dimethylpiperazine.
- 13. The birefringent molecularly oriented polymeric film or fiber of claim 10 wherein each of D and E' is methyl and each of D' and E is hydrogen.
- 14. The birefringent molecularly oriented polymeric film or fiber of claim 13 wherein each of Y and Y' represent the atoms necessary to complete with the nitrogen atoms to which they are bonded the piperazine radical.
- 15. The birefringent molecularly oriented polymeric film or fiber of claim 13 wherein each of Y and Y' represent the atoms necessary to complete with the nitrogen atoms to which they are bonded the 2-methylpiperazine radical.
- 16. The birefringent molecularly oriented polymeric film or fiber of claim 13 wherein each of Y and Y' represent the atoms necessary to complete with the nitrogen atoms to which they are bonded the 2,5-dimethylpiperazine radical.
- 17. The birefringent molecularly oriented polymer of claim 10 in the form of a unidirectionally stretched film or fiber.
Parent Case Info
This is a division of application Ser. No. 238,057 filed Mar. 2, 1981, now U.S. Pat. No. 4,393,196.
US Referenced Citations (11)
Non-Patent Literature Citations (1)
Entry |
Pryde-J. Macromol. Sci.-Rev. Macromol. Chem., C17(1), 1-35 (1979). |
Divisions (1)
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Number |
Date |
Country |
Parent |
238057 |
Mar 1981 |
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