US5166305A
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Aromatic polysulfoneetherketone polymers
Assignee: Cheil Industries Inc
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Filing: 1991-01-04
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Granted: 1992-11-24
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Expires: 2011-01-04
Abstract
Abstract Novel aromatic polysulfoneetherketone polymers having recurring units of Formula: ##STR1## wherein Ar is phenylene, biphenylene or ##STR2## in which --Y-- represents ##STR3## The aromatic polysulfoneetherketone polymers of the invention have superior properties over the known polysulfone or polyetherketone series polymers in terms of heat resistance, chemical resistance and electric insulation as well as mechanical properties such as dimensional stability.
Inventors
- 👤 Jong W. Park
- 👤 In T. Lee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:13
CPC Classifications
C; C08; C08G; C08G75/00; C08G75/20; C08G75/23; C08G65/00; C08G65/34; C08G65/38; C08G65/40; C08G65/4012; C08L; C08L2205/00; C08L2205/05
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
20 words
Polysulfoneetherketone polymers comprising the recurring units of Formula: wherein Ar is phenylene, biphenylene or ##STR14## in which --Y-- represents ##STR15##
Claim 2
Dependent Claim
20 words
Polysulfoneetherketone polymers comprising the recurring units of Formula: wherein Ar is phenylene, biphenylene or ##STR14## in which --Y-- represents ##STR15##
Claim 3
Dependent Claim
15 words
The polysulfoneetherketone polymers of claim 1, wherein the reduced viscosity thereof is 0.1 to 1.2.
Claim 4
Dependent Claim
12 words
The polysulfoneetherketone polymers of claim 1, wherein the recurring units are ##STR16##
Claim 5
Dependent Claim
12 words
The polysulfoneetherketone polymers of claim 1, wherein the recurring units are ##STR17##
Claim 6
Dependent Claim
12 words
The polysulfoneetherketone polymers of claim 1, wherein the recurring units are ##STR18##
Claim 7
Dependent Claim
72 words
A process for preparing polysulfoneetherketone polymers having the recurring units of Formula: ##STR19## wherein Ar is phenylene, biphenylene or ##STR20## in which --Y-- represents ##STR21## in which equivalent amounts of an aromatic dihalide of Formula: ##STR22## wherein X is chlorine or fluorine, and an aromatic diolate of Formula: M--O--Ar--O--M (III) wherein M is an alkali metal, are condensated in an organic polar solvent at a temperature ranging from 140° to 250° C.
Claim 8
Dependent Claim
72 words
A process for preparing polysulfoneetherketone polymers having the recurring units of Formula: ##STR19## wherein Ar is phenylene, biphenylene or ##STR20## in which --Y-- represents ##STR21## in which equivalent amounts of an aromatic dihalide of Formula: ##STR22## wherein X is chlorine or fluorine, and an aromatic diolate of Formula: M--O--Ar--O--M (III) wherein M is an alkali metal, are condensated in an organic polar solvent at a temperature ranging from 140° to 250° C.
Claim 9
Dependent Claim
11 words
The process of claim 6, wherein the aromatic dihalide is 4-fluoro-4'-(4-fluorobenzoylphenyloxy)diphenylsulfone.
Claim 10
Dependent Claim
23 words
The process of claim 6, wherein the aromatic diolate is resulted from the reaction of an aromatic diol and an alkali metal base.
Claim 11
Dependent Claim
20 words
The process of claim 8, wherein the aromatic diol is selected from the group consisting of 2,2-bis(4-hydroxyphenyl)-propane, hydroquinone and 4,4'-biphenol.
Claim 12
Dependent Claim
34 words
The process of claim 8 or 9, wherein potassium carbonate is used as an alkali metal base in an amount of 1.0 to 20% by weight in excess with respect to the aromatic diol.
Claim 13
Dependent Claim
21 words
The process of claim 6, wherein the organic polar solvent is selected from the group consisting of dimethylsulfoxide, sulfolan and diphenylsulfone.
Claim 14
Dependent Claim
28 words
The process of claim 6, wherein the content of water in the reaction mixture is adjusted to 0.5% by weight or below with respect to the aromatic diolate.
Claim 15
Dependent Claim
15 words
The process of claim 6, wherein the reaction is completed within 1 to 12 hours.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-11-24 | 1996-05-25 | 1996-11-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-11-24 | 2000-05-25 | 2000-11-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-11-24 | 2004-05-25 | 2004-11-24 | $7700.00 | Window Closed / Lapsed |