Novel fluorine-containing cyclic polymer

• US 4,897,457 A
• Filed: 08/10/1988
• Issued: 01/30/1990
• Est. Priority Date: 08/14/1987
• Status: Expired due to Term

• Current Assignee: Asahi Glass Company, Limited (AGC, Inc.)
• Original Assignee: Asahi Glass Company, Limited (AGC, Inc.)
• Inventors: Kojima, Gen, Nakamura, Masaru, Kaneko, Isamu, Oharu, Kazuya, Kamba, Motoi, Matsuo, Masashi, Samejima, Shunichi
• Primary Examiner(s): Schofer, Joseph L.
• Assistant Examiner(s): SAROFIM, NABIL F
• Application Number:
  US07/233,820
• Time in Patent Office: 538 Days
• Field of Search: 526/247, 526/252
• US Class Current: 526/247
• CPC Class Codes: B01D 71/44 Polymers obtained by reactions only involving carbon-to-carbon unsaturated bonds, not provided for in a single one of groups B01D71/26-B01D71/42
• CPC Class Codes: C08F 16/32 Monomers containing two or more unsaturated aliphatic radicals

Abstract

A fluorine-containing thermoplastic resinous polymer which consist essentially of a group (a) of repeating units of a cyclic structure to be represented by the following general formula: ##STR1## (where: n is an integer of 1 to 2); the polymer having a molecular weight such that the intrinsic viscosity thereof may become at least 0.1.

A fluorine-containing thermoplastic resinous polymer which consists essentially of:

(i) a group (a) of repeating units to be represented by the following general formula: ##STR2## (where: n is an integer of 1 or 2), and (ii) a group (b) of repeating units to be represented by the following general formula:

--CF.sub.2 --CFX)--

(where: X is selected from fluorine, chlorine. O--CF₂ CF₂ CF₃, O--CF₂ CF(CF₃)OCF₂ CF₂ SO₂ F, and O--CF₂ CF₂ CF₂ COOCH₃)

the polymer containing therein at least 80% by weight of the group of repeating units (a), and having a molecular weight such that the intrinsic viscosity thereof may be become at least 0.1.

Claims

1. A fluorine-containing thermoplastic resinous polymer which consists essentially of (a) of repeating units of a cyclic structure represented by the following general formula:

##STR31## where n is an integer of 1 or 2, said polymer having a molecular weight such that the intrinsic viscosity of the polymer is at least 0.1.

2. A polymer according to claim 1, wherein said (a) repeating units are repeating units of cyclically polymerized perfloroallyl vinyl ether and/or perfluorobutenyl vinyl ether.

6. A fluorine-containing thermoplastic resinous polymer according to claim 2 wherein the repeating units are:

##STR33##

7. A fluorine containing thermoplastic resinous polymer according to claim 2 wherein the repeating units are:

##STR34##

8. A polymer according to claim 2 which is a copolymer of cyclically polymerized perfluoroallyl vinyl ether and cyclically polymerized perfluorobutenyl vinyl ether.

3. A fluorine-containing thermoplastic resinous polymer which consists essentially of:

(i) (a) of repeating units represented by the following general formula;

##STR32## where n is an integer of 1 or 2, and (ii) (b) of repeating units represented by the following general formula;

space="preserve" listing-type="equation">CF.sub.2 --CFX

where X is selected from fluorine, chlorine O--CF₂ CF₂ CF₃, O--CF₂ CF(CF₃)OCF₂ CF₂ SP₂ F, and --CF₂ CF₂ CF₂ COOH₃,

said polymer containing therein at least 80% by weight of the repeating units (a), and having a molecular weight such that the intrinsic viscosity of the polymer is at least 0.1.

4. A polymer according to claim 3, wherein said (a) repeating units are repeating units of cyclically polymerized perfluoroallyl vinyl ether and/or perfluorobutenyl vinyl ether.

5. A polymer according to claim 3 or 4, wherein said (b) repeating units are repeating units of a copolymerized comonomer of the following general formula:

space="preserve" listing-type="equation">CF.sub.2 ═

CFX

where X is selected from fluorine, chlorine, O--CF₂ CF₂ CF₃, O--CF₂ CF(CF₃)OCF₂ CF₂ SP₂ F, and O--CF₂ CF₂ CF₂ COOCH₃).

9. A polymer according to claim 4 which is a copolymer of cyclically polymerized perfluoroallyl vinyl ether and of CF₂ ═

CF₂.

10. A polymer according to claim 4 which is a copolymer of cyclically polymerized perfluorobutenyl vinyl ether and of CF₂ ═

CFCl.

11. A polymer according to claim 4 which is a copolymer of cyclically polymerized perfluorobutenyl vinyl ether and of CF₂ ═

CF₂.

12. A polymer according to claim 4 which is a copolymer of cyclically polymerized perfluoroallyl vinyl ether and of CF₂ ═

CF--O--CF₂ CF₂ CF₂ COOCH₃.

13. A polymer according to claim 4 which is a terpolymer of cyclically polymerized perfluoroallyl vinyl ether, of CF₂ ═

CF--O--CF₂ CF₂ CF₂ COOH₃ and of CF₂ ═

CF₂.

14. A polymer according to claim 4 which is a copolymer of cyclically polymerized perfluorobutenyl vinyl ether and of CF₂ ═

CFOCF₂ CF(CF₃)OCF₂ CF₂ SO₂ F.

15. A polymer according to claim 4 which is a copolymer of cyclically polymerized perfluoroallyl vinyl ether and of CF₂ ═

CF--O--CF₂ CF₂ CF₃.