US4598137A
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Polyarylene polyethersulfone ionomers
Assignee: Canadian Patents and Development Ltd
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Filing: 1984-11-30
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Granted: 1986-07-01
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Expires: 2004-11-30
Abstract
Abstract An aromatic ionomeric copolymer having arylether and arylsulfone linkages has been prepared by condensation of both: (a) The alkali metal bisphenate salts of 9,9-bis(4-hydroxyphenyl-fluoren-4-carboxylic acid, optionally with up to 99 mol percent of another dihydric phenol based on the combined bisphenates in the mixture; and (b) dihalodiphenylsulfones where the halogen is selected from chlorine or fluorine. The copolymers are useful inter alia as ion exchange materials and permselective membranes. A process of preparing and purifying the carboxylic acid containing bisphenol monomer is described.
Inventors
- 👤 Michael D. Guiver
- 👤 Oleh Kutowy
- 👤 John W. Apsimon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:34
CPC Classifications
B; B01; B01D; B01D71/00; B01D71/06; B01D71/66; B01D71/68; B01J; B01J39/00; B01J39/08; B01J39/16; C; C08; C08G; C08G75/00; C08G75/20; C08G75/23; C08J; C08J5/00; C08J5/20; C08J5/22; C08J5/2206; C08J5/2218; C08J5/2256; C08G2650/00; C08G2650/62; C08G2650/64; C08J2381/00; C08J2381/06
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
51 words
A polyarylethersulfone copolymer having pendant carboxyl groups, formed by condensation of monomers comprising: (a) a dihydric phenol monomer comprising 9,9-bis(4-hydroxyphenyl)-fluoren-4-carboxylic acid as alkali metal salt, and (b) a dihalodiphenylsulfone where the halogen is selected from the chloro and fluoro groups; said monomers (a) and (b) being condensed in approximately equimolar amounts.
Claim 2
Dependent Claim
51 words
A polyarylethersulfone copolymer having pendant carboxyl groups, formed by condensation of monomers comprising: (a) a dihydric phenol monomer comprising 9,9-bis(4-hydroxyphenyl)-fluoren-4-carboxylic acid as alkali metal salt, and (b) a dihalodiphenylsulfone where the halogen is selected from the chloro and fluoro groups; said monomers (a) and (b) being condensed in approximately equimolar amounts.
Claim 3
Dependent Claim
22 words
The copolymer of claim 1 wherein the dihydric phenol monomer condensed is a mixture including additional dihydric phenols as alkali metal salts.
Claim 4
Dependent Claim
21 words
The copolymer of claim 2 wherein the additional dihydric phenol is selected from the group consisting of dihydroxydiphenylmethanes, di(hydroxyphenyl)sulfones and di(hydroxyphenyl)ethers.
Claim 5
Dependent Claim
20 words
The method of claim 2 wherein the additional dihydric phenol is selected from 2,2-bis-(4-hydroxyphenyl)propane; 2,2-bis(4-hydroxyphenyl) 1,1,1,3,3,3-hexafluoropropane; 4,4'-dihydroxy-biphenyl; 9,9-bis(4-hydroxyphenyl)-fluorene; bis-(4-hydroxyphenyl)sulfone; bis-(4-hydroxyphenyl)ether.
Claim 6
Dependent Claim
11 words
The copolymer of claim 4 wherein the additional comonomer is bisphenol-A.
Claim 7
Dependent Claim
14 words
The copolymer of claim 1 having a molecular weight within the approximate range 15,000-150,000.
Claim 8
Dependent Claim
18 words
The copolymer of claim 1 wherein the carboxyl groups in the copolymer are in salt, or ester form.
Claim 9
Dependent Claim
18 words
The copolymer of claim 7 in salt form the salt cations being sodium, potassium, calcium or quaternary ammonium.
Claim 10
Dependent Claim
20 words
The copolymer of claim 7 in ester form, the esterifying group being lower alkyl of 1-4 carbon atoms or aryl.
Claim 11
Dependent Claim
9 words
The copolymer of claim 1 in permselective membrane form.
Claim 12
Dependent Claim
57 words
The copolymer of claim 1 having the formula ##STR10## where A is any non-fluorene carboxylate containing dihydric phenol residue, B is the carboxylated fluorene dihydric phenol residue, C is the diphenylsulfone residue, x=0-99% and y=1-100% of the total x+y units, and n is a number high enough to give a molecular weight of at least about 15,000.
Claim 13
Dependent Claim
24 words
The copolymer of claim 11 wherein A has the structural formula ##STR11## where R is selected from sulfone, ether or lower alkyl-substituted methane moieties.
Claim 14
Dependent Claim
32 words
The copolymer of claim 11 wherein B has the structural formula: ##STR12## where M is selected from hydrogen, metal cations, quaternary ammonium, and esterifying groups selected from lower alkyl or aryl groups.
Claim 15
Dependent Claim
11 words
The copolymer of claim 11 wherein C has the formula ##STR13##
References Cited (Backward Citations)
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