Claims
- 1. A fluorine-containing diene represented by the formula 1:CF2═CF(CF2)nCXYOCF═CF2 Formula 1 wherein each of X and Y which are independent of each other, is an atom selected from a hydrogen atom, a fluorine atom, a chlorine atom, a bromine atom and an iodine atom, provided that X and Y are neither simultaneously hydrogen atoms nor simultaneously fluorine atoms, and n is an integer of from 1 to 3.
- 2. The fluorine-containing diene according to claim 1, wherein one of X and Y is a chlorine atom, and the other is a chorine atom or a fluorine atom.
- 3. A fluorine-containing compound represented by the formula 2:CF2Z1CFZ2(CF2)nCXYOCFZ3CF2Z4 Formula 2 wherein each of X and Y which are independent of each other, is an atom selected from a hydrogen atom, a fluorine atom, a chlorine atom, a bromine atom and an iodine atom, provided that X and Y are not simultaneously hydrogen atoms or fluorine atoms, each of Z1, Z2, Z3 and Z4 which are independent of one another, is a halogen atom selected from a chlorine atom, a bromine atom and an iodine atom, and n is an integer of from 1 to 3.
- 4. The fluorine-containing compound according to claim 3, wherein one of X and Y is a chlorine atom and the other is a chlorine atom or a fluorine atom, and each of Z1, Z2, Z3 and Z4 is a chlorine atom.
- 5. A method of producing the fluorine-containing diene as defined in claim 1, which comprisesdehalogenating a fluorine-containing compound represented by the formula 2: CF2Z1CFZ2(CF2)nCXYOCFZ3CF2Z4 Formula 2 wherein each of X and Y which are independent of each other, is an atom selected from a hydrogen atom, a fluorine atom, a chlorine atom, a bromine atom and an iodine atom, provided that X and Y are not simultaneously hydrogen atoms or fluorine atoms, each of Z1, Z2, Z3 and Z4 which are independent of one another, is a halogen atom selected from a chlorine atom, a bromine atom and an iodine atom, and n is an integer of from 1 to 3.
- 6. A method of producing the fluorine-containing diene as defined in claim 2, which comprisesdehalogenating a fluorine-containing compound represented by the formula 2: CF2Z1CFZ2(CF2)nCXYOCFZ3CF2Z4 Formula 2 wherein one of X and Y is a chlorine atom and the other is a chlorine atom or a fluorine atom, and each of Z1, Z2, Z3 and Z4 is a chlorine atom and n is an integer of from 1 to 3.
- 7. The method of producing the fluorine-containing diene according to claim 5, wherein the dehalogenation is carried out by contacting the fluorine-containing compound with zinc.
- 8. An optical component which comprises a polymer obtained by polymerizing monomer units of the fluorine-containing diene as defined in claim 1.
- 9. The optical component according to claim 8, which is optical fiber.
- 10. An optical fiber which comprises a mixture of a low molecular weight polymer obtained by polymerizing monomer units of the fluorine-containing diene as defined in claim 1.
- 11. 4-Chloro-1,1,2,4, 5,5,6,7,7-nonafluoro-3-oxa-1,6-heptadiene (CF2═CFCF2CClFOCF═CF2), 4,4-dichloro-1,1,2,5,5,6,7- octafluoro-3-oxa-1,6-heptadiene CF2═CFCF2CCl2OCF═CF2), 1,2,4,6,7-pentachloro-1,1,2,4,5,5,6,7,7-nonafluoro-3-oxaheptane (CF2ClCFClCF2CClFOCFClCF2Cl), or 1,2,4,4,6,7-hexachloro-1,1,2,5,5,6,7,7-octafluoro-3-oxaheptane (CF2ClCFClCF2CCl2OCFClCF2Cl).
- 12. The method of producing the fluorine-containing diene according to claim 6, wherein the dehalogenation is carried out by contacting the fluorine-containing compound with zinc.
- 13. A low molecular weight polymer obtained by polymerizing monomer units of the fluorine-containing diene as defined in claim 2.
- 14. A low molecular weight polymer obtained by polymerizing monomer units of the fluorine-containing diene as defined in claim 1, wherein the polymer has a weight average molecular weight of from 500 to 100,000.
- 15. The low molecular weight polymer obtained by polymerizing monomer units of the fluorine-containing diene as defined in claim 1, wherein the polymer has a weight average molecular weight of from 500 to 10,000.
- 16. A copolymer comprising a-polymerized units of the fluorine-containing diene according to claim 1 and another monomer.
- 17. A polymer obtained by polymerizing at least one of the compounds as claimed in claim 11.
- 18. An optical component comprising one or more of the polymers claimed in claim 17.
- 19. The optical component of claim 18, wherein the weight average molecular weight of the polymer is 42,500.
Priority Claims (1)
Number |
Date |
Country |
Kind |
2000-125615 |
Apr 2000 |
JP |
|
Parent Case Info
This application is a division of application Ser. No. 09/841,592 Filed on Apr. 25, 2001 now allowed.
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