US4396755A
Expired / Lapsed
US
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Production of aromatic polyketones
Assignee: Imperial Chemical Industries Ltd
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Filing: 1982-04-12
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Granted: 1983-08-02
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Expires: 2002-04-12
Abstract
Abstract Production of an aromatic polyketone by reacting in the presence of a quinquevalent phosphorous halide (preferably PCl 5 ) and a fluoroalkane sulphonic acid (preferably CF 3 SO 2 OH) the reactants selected from: (a) a mixture of (i) at least one aromatic dicarboxylic acid HO 2 C--Ar--CO 2 H where --Ar'-- is a divalent aromatic radical and CO 2 H is an aromatically bound carboxylic acid group, which dicarboxylic acid is polymerizable with the at least one aromatic compound of (ii), and (ii) at least one aromatic compound H--Ar'--H where --Ar'-- is a divalent aromatic radical and H is an aromatically bound hydrogen atom, which compound is polymerizable with the at least one dicarboxylic acid of (i); (b) at least one aromatic monocarboxylic acid H--Ar"--CO 2 H where --Ar"-- is a divalent aromatic radical and H and CO 2 H are as defined in (a), which monocarboxylic acid is self-polymerizable; and (c) a combination of (a) and (b).
Inventors
- 👤 John B. Rose
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:39
CPC Classifications
C; C08; C08G; C08G61/00; C08G61/12; C08G61/127
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
207 words
A process for the production of an aromatic polyketone which comprises reacting at a temperature of from 40° to 200° C. in the presence of a quinquevalent phosphorous halide and a fluoroalkane sulphonic acid the reactants selected from the group consisting of: (a) a mixture of equimolar quantities of (i) at least one aromatic dicarboxylic acid of formula HO.sub.2 C--Ar--Co.sub.2 H where --Ar-- is a divalent aromatic radical and Co 2 H is an aromatically bound carboxylic acid group, which acid is polymerisable with the at least one aromatic compound of (a)(ii), (ii) at least one aromatic compound of formula H--Ar'--H where --Ar'-- is a divalent aromatic radical and H is an aromatically bound hydrogen atom, which compound is polymerisable with the at least one aromatic dicarboxylic acid of (a)(i), (b) at least one aromatic monocarboxylic acid of formula H--Ar"--CO.sub.2 H where --Ar"-- is a divalent aromatic radical and H is an aromatically bound hydrogen atom and CO 2 H is an aromatically bound carboxylic acid group, which acid is self-polymerisable, and (c) a combination of (a) and (b) said process being carried out with at least as many moles of phosphorous halide being used as are the number of moles of CO 2 H groups used.
Claim 2
Dependent Claim
207 words
A process for the production of an aromatic polyketone which comprises reacting at a temperature of from 40° to 200° C. in the presence of a quinquevalent phosphorous halide and a fluoroalkane sulphonic acid the reactants selected from the group consisting of: (a) a mixture of equimolar quantities of (i) at least one aromatic dicarboxylic acid of formula HO.sub.2 C--Ar--Co.sub.2 H where --Ar-- is a divalent aromatic radical and Co 2 H is an aromatically bound carboxylic acid group, which acid is polymerisable with the at least one aromatic compound of (a)(ii), (ii) at least one aromatic compound of formula H--Ar'--H where --Ar'-- is a divalent aromatic radical and H is an aromatically bound hydrogen atom, which compound is polymerisable with the at least one aromatic dicarboxylic acid of (a)(i), (b) at least one aromatic monocarboxylic acid of formula H--Ar"--CO.sub.2 H where --Ar"-- is a divalent aromatic radical and H is an aromatically bound hydrogen atom and CO 2 H is an aromatically bound carboxylic acid group, which acid is self-polymerisable, and (c) a combination of (a) and (b) said process being carried out with at least as many moles of phosphorous halide being used as are the number of moles of CO 2 H groups used.
Claim 3
Dependent Claim
20 words
A process according to claim 1 wherein the fluoroalkane sulphonic acid used is trifluoromethane sulphonic acid or difluoromethane sulphonic acid.
Claim 4
Dependent Claim
27 words
A process according to claim 1 wherein the amount of the fluoroalkane sulphonic acid used is such that the fluoroalkane sulphonic acid acts as a reaction solvent.
Claim 5
Dependent Claim
20 words
A process according to claim 1 wherein substantially equimolar quantities of phosphorous halide and CO 2 H groups are employed.
Claim 6
Dependent Claim
16 words
A process according to claim 1 wherein the phosphorous halide is phosphorous pentachloride or phosphorous pentabromide.
Claim 7
Dependent Claim
99 words
A process according to claim 1 wherein the at least one aromatic dicarboxylic acid of (a)(i) is selected from the group consisting of: ##STR14## where --Y-- is a direct link, --O--, --S--, --CO--, --SO 2 --, --C(CF 3 ) 2 --, or ##STR15## where n is 1 or 2, m is 1 or 2, k is 0 or 1, --X-- and --X'-- which may be the same or different are each a direct link, --O--, --S--, --CO--, --SO 2 --, or --C(CF 3 ) 2 --, and --Z-- is --CO--, --SO 2 --, or --C(CF 3 ) 2 --.
Claim 8
Dependent Claim
22 words
A process according to claim 6 wherein the at least one aromatic dicarboxylic acid is selected from the group consisting of: ##STR16##
Claim 9
Dependent Claim
80 words
A process according to claim 1 wherein the at least one aromatic compound of (a)(ii) is selected from the group consisting of: ##STR17## where --E-- is a direct link, --O--, --S--, or ##STR18## where x is 1 or 2, y is 1 or 2, z is 0 or 1, --G-- and --G'-- which may be the same or different are each a direct link, --O--, or --S--, and --J-- is --CO--, --SO 2 --, or --C(CF 3 ) 2 --.
Claim 10
Dependent Claim
88 words
A process according to claim 1 wherein the at least one aromatic monocarboxyclic acid of (b) is selected from the group consisting of: ##STR19## where --L-- is a direct link, --O--, --S--, or ##STR20## where p is 1 or 2, q is 1 or 2, r is 0 or 1, --R-- is a direct link, --O--, or --S--, --R'-- is a direct link, --O--, --S--, --CO--, --SO 2 --, or --C(CF 3 ) 2 --, and --Q-- is --CO--, --SO 2 -- or C(CF 3 ) 2 .
Claim 11
Dependent Claim
22 words
A process according to claim 9 wherein the at least one aromatic monocarboxylic acid is selected from the group consisting of: ##STR21##
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GB1060546A
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GB1164817A
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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) | 1986-08-01 | 1987-01-31 | 1987-08-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-08-01 | 1991-01-31 | 1991-08-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-08-01 | 1995-01-31 | 1995-08-02 | $7700.00 | Window Closed / Lapsed |