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US4964890A
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Aromatic polyether ketones
Assignee: Bayer AG
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Filing: 1989-09-27
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Granted: 1990-10-23
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Expires: 2009-09-27
Abstract
Abstract Polyether ketones based on diphenols corresponding to the following general formula (I): <IMAGE> (I) wherein R1 and R2, independently represent hydrogen, halogen, C1-C8 alkyl, C5 or C6 cycloalkyl, C6-C10 aryl or C7-C12 aralkyl; m represents an integer of from 4 to 7; R3 and R4, may be selected individually for each X and independently represent hydrogen or C1-C6 alkyl, and X represents carbon; with the proviso that, on at least one atom, X, R3 and R4 both represent alkyl; the production thereof and application as films or composite films with other plastic films as well as their utilization as permeation membranes.
Inventors
- 👤 Knud Reuter
- 👤 Dieter Freitag
- 👤 Gunther Weymans
- 👤 Rolf Dhein
- 👤 Erich Meier
- 👤 Gerold Muller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 14:23
CPC Classifications
C; C08; C08J; C08J5/00; C08J5/18; B; B01; B01D; B01D71/00; B01D71/06; B01D71/52; B01D71/522; B01D71/5222; C08G; C08G65/00; C08G65/34; C08G65/38; C08G65/40; C08G65/4012; C08L; C08L71/00; C08J2371/00
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
160 words
Aromatic polyether ketones having the recurring structure unit: --O--E--O--E'-- (VII) wherein --E'-- represents a divalent radical of an aromatic ketone (VIIIa): ##STR29## wherein Ar and Ar'; which may be the same or different, represent difunctional aromatic radicals having from 6 to 50 carbon atoms; and wherein --O--E--O-- (IXa) represents a divalent diphenolate radical; characterized in that from 0.1 to 100 mol% of the diphenolate radicals (IXa) correspond to the following general formula (Ia): ##STR30## wherein R 1 and R 2 , independently hydrogen, halogen, C 1 -C 8 alkyl, C 5 or C 6 cycloalkyl, C 6 -C 10 aryl, or C 7 -C 12 aralkyl; m represents an integer of from 4 to 7, R 3 and R 4 , may be selected individually for each X and independently represent hydrogen or C 1 -C 6 alkyl, and X represents carbon; with the proviso that, on at least one atom, X, R 3 and R 4 both represent alkyl.
Claim 2
Dependent Claim
160 words
Aromatic polyether ketones having the recurring structure unit: --O--E--O--E'-- (VII) wherein --E'-- represents a divalent radical of an aromatic ketone (VIIIa): ##STR29## wherein Ar and Ar'; which may be the same or different, represent difunctional aromatic radicals having from 6 to 50 carbon atoms; and wherein --O--E--O-- (IXa) represents a divalent diphenolate radical; characterized in that from 0.1 to 100 mol% of the diphenolate radicals (IXa) correspond to the following general formula (Ia): ##STR30## wherein R 1 and R 2 , independently hydrogen, halogen, C 1 -C 8 alkyl, C 5 or C 6 cycloalkyl, C 6 -C 10 aryl, or C 7 -C 12 aralkyl; m represents an integer of from 4 to 7, R 3 and R 4 , may be selected individually for each X and independently represent hydrogen or C 1 -C 6 alkyl, and X represents carbon; with the proviso that, on at least one atom, X, R 3 and R 4 both represent alkyl.
Claim 3
Dependent Claim
19 words
Aromatic polyether ketones according to claim 1, having an average molecular weight M w of from 742 to 500,000.
Claim 4
Dependent Claim
24 words
Aromatic polyether ketones according to claim 1, characterized in that from 3 to 100 mol.% of the diphenolate radicals (IXa) are diphenolate radicals (Ia).
Claim 5
Dependent Claim
24 words
Aromatic polyether ketones according to claim 1, characterized in that from 10 to 100 mol.% of the diphenolate radicals (IXa) are diphenolate radicals (Ia).
Claim 6
Dependent Claim
123 words
Process for the preparation of the polyether ketones according to claim 1 by reaction of dialkali metal diphenolate with dihalogeno-diaryl ketones (VIII): ##STR31## wherein --Ar-- and --Ar'--, which may be the same or different, represent difunctional aromatic radicals having from 6 to 50 carbon atoms; and Hal represents halogen, such as fluorine, chlorine or bromine; characterized in that from 0.1 to 100 mol.% of the dialkali metal diphenolates are those corresponding to the following general formula (Ib): ##STR32## wherein X, R 1 , R 2 , R 3 , R 4 and m are as defined in connection with general formula I in claim 1; and in that the reaction is carried out in polar solvents, such as N-alkylated caprolactams or N-alkylated pyrrolidones.
Claim 7
Dependent Claim
107 words
1 to 1500 μm thick films of polyether ketones based on diphenols corresponding to formula (I) ##STR33## in which R 1 and R 2 independently of one another represent hydrogen, halogen, preferably chlorine or bromine, C 1-8 alkyl, C 5-6 cycloalkyl, C 6-10 aryl and C 7-12 aralkyl, m is an integer of form 4 to 7, preferably 4 or R 3 and R 4 may be individually selected for each X and independently of one another represent hydrogen or C 1-6 alkyl and alkyl and X represents carbon, with the proviso that, at at least one atom X, both R 3 and R 4 are alkyl.
Claim 8
Dependent Claim
107 words
1 to 1500 μm thick films of polyether ketones based on diphenols corresponding to formula (I) ##STR33## in which R 1 and R 2 independently of one another represent hydrogen, halogen, preferably chlorine or bromine, C 1-8 alkyl, C 5-6 cycloalkyl, C 6-10 aryl and C 7-12 aralkyl, m is an integer of form 4 to 7, preferably 4 or R 3 and R 4 may be individually selected for each X and independently of one another represent hydrogen or C 1-6 alkyl and alkyl and X represents carbon, with the proviso that, at at least one atom X, both R 3 and R 4 are alkyl.
Claim 9
Dependent Claim
17 words
Films as claimed in claim 6 mono- or biaxially stretched in a ratio of 1:1.5 to 1:3.0.
Claim 10
Dependent Claim
14 words
Composite films comprising the film of claim 6 and a film of another plastic.
Claim 11
Dependent Claim
10 words
A gas permeation membrane comprising the film of claim 6.
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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) | 1993-10-22 | 1994-04-23 | 1994-10-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-10-22 | 1998-04-23 | 1998-10-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-10-22 | 2002-04-23 | 2002-10-23 | $7700.00 | Window Closed / Lapsed |