US4804724A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Blends of a biphenyl containing poly (aryl ether sulfone) and a poly (aryl ether ketone)
Assignee: Syensqo Specialty Polymers USA LLC
•
Filing: 1987-12-15
•
Granted: 1989-02-14
•
Expires: 2007-12-15
Abstract
Abstract Described are blends of a biphenyl containing poly(acryl ether sulfone) and a poly(acryl ether ketone). These blends exhibit improved mechanical properties and environmental stress rupture resistance.
Inventors
- 👤 James E. Harris
- 👤 Lloyd M. Robeson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:51
CPC Classifications
C; C08; C08L; C08L65/00; C08G; C08G61/00; C08G61/12; C08G61/127; C08G65/00; C08G65/34; C08G65/38; C08G65/40; C08G65/4012; C08L71/00; C08L81/00; C08L81/06
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
38 words
A blend comprising a biphenyl containing poly(aryl ether sulfone) and a poly(aryl ether ketone) wherein said biphenyl containing poly(aryl ether sulfone) comprises from about 25 to 95 weight percent of said poly(aryl ether sulfone) and poly(aryl ether ketone).
Claim 2
Dependent Claim
38 words
A blend comprising a biphenyl containing poly(aryl ether sulfone) and a poly(aryl ether ketone) wherein said biphenyl containing poly(aryl ether sulfone) comprises from about 25 to 95 weight percent of said poly(aryl ether sulfone) and poly(aryl ether ketone).
Claim 3
Dependent Claim
71 words
A blend as defined in claim 1 wherein the poly(aryl ether sulfone) contains the repeating unit: ##STR19## wherein R 1 through R 4 are --O--, --SO 2 --, ##STR20## S with the proviso that at least one of R 1 through R 4 is --SO 2 --, Ar 1 through Ar 3 are arylene of 6 to 24 carbon atoms, preferably phenylene or biphenylene; a and n are 0 or 1.
Claim 4
Dependent Claim
18 words
A blend as defined in claim 1 wherein the poly(aryl ether sulfone) has the following repeating unit: ##STR21##
Claim 5
Dependent Claim
18 words
A blend as defined in claim 1 wherein the poly(aryl ether sulfone) has the following repeating unit: ##STR22##
Claim 6
Dependent Claim
18 words
A blend as defined in claim 1 wherein the poly(aryl ether sulfone) has the following repeat unit: ##STR23##
Claim 7
Dependent Claim
18 words
A blend as defined in claim 1 wherein the poly(aryl ether sulfone) has the following repeat unit: ##STR24##
Claim 8
Dependent Claim
25 words
A blend as defined in claim 1 wherein the poly(aryl ether sulfone) is a copolymer having the repeating units: ##STR25## arranged randomly along the chain.
Claim 9
Dependent Claim
54 words
A blend as defined in claim 1 wherein the poly(aryl ether ketone) has a repeating unit of the following formula: ##STR26## wherein Ar is independently a divalent aromatic radical selected from phenylene, biphenylene or naphthylene, X is independently O, ##STR27## or a direct bond and n is an integer of from 0 to 3.
Claim 10
Dependent Claim
39 words
A blend as defined in claim 1 wherein the poly(aryl ether ketone) has a repeating unit of the following formula: ##STR28## wherein a is an integer of 1 to 4 and b, c, and d are 0 to 1.
Claim 11
Dependent Claim
31 words
A blend as defined in claim 1 wherein the poly(aryl ether ketone) has a repeating unit of the following formula: ##STR29## wherein X is independently O, ##STR30## or a direct bond.
Claim 12
Dependent Claim
48 words
A blend as defined in claim 1 wherein the poly(aryl ether ketone) has a repeating unit of the following: ##STR31## wherein Ar is a divalent aromatic radical selected from phenylene, biphenylene or napthylene, X is independently O, ##STR32## or a direct bond and e is 0 or 1.
Claim 13
Dependent Claim
49 words
A blend as defined in claim 1 wherein the poly(aryl ether ketone) has a repeating unit of the following formula: ##STR33## wherein Ar is a divalent aromatic radical selected from phenylene, biphenylene or naphthylene, X is independently O, ##STR34## or a direct bond and e is 0 or 1.
Claim 14
Dependent Claim
20 words
A blend as defined in claim 1 wherein the poly(aryl ether ketone) has a repeating unit of the formula: ##STR35##
Claim 15
Dependent Claim
20 words
A blend as defined in claim 1 wherein the poly(aryl ether ketone) has a repeating unit of the formula: ##STR36##
Claim 16
Dependent Claim
20 words
A blend as defined in claim 1 wherein the poly(aryl ether ketone) has a repeating unit of the formula: ##STR37##
Claim 17
Dependent Claim
25 words
A blend as defined in claim 1 wherein the poly(aryl ether ketone) has a repeating unit selected from one or more of the following: ##STR38##
Claim 18
Dependent Claim
35 words
A blend comprising a biphenyl containing poly(aryl ether sulfone) and a poly(aryl ether ketone), wherein said poly(aryl ether sulfone) comprises from 50 to 95 weight percent of said poly(aryl ether sulfone) and poly(aryl ether ketone).
Claim 19
Dependent Claim
35 words
A blend comprising a biphenyl containing poly(aryl ether sulfone) and a poly(aryl ether ketone), wherein said poly(aryl ether sulfone) comprises from 50 to 95 weight percent of said poly(aryl ether sulfone) and poly(aryl ether ketone).
References Cited (Backward Citations)
US4052365A
Cited
US4108837A
Cited
US3287363A
Cited
US3729527A
Cited
US3819582A
Cited
EP0008895A1
Cited
US4435350A
Cited
GB2108983A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-02-14 | 1992-08-15 | 1993-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-02-14 | 1996-08-15 | 1997-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-02-14 | 2000-08-15 | 2001-02-14 | $7700.00 | Window Closed / Lapsed |