US4624997A
Expired / Lapsed
US
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Article molded from a blend of a poly(aryl ether ketone) and a poly(aryl ether sulfone)
Assignee: Delta International Machinery Corp
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Filing: 1984-09-28
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Granted: 1986-11-25
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Expires: 2004-09-28
Abstract
Abstract Described herein is an article molded from a blend of a poly(aryl ether ketone) and a poly(aryl ether sulfone). These molded articles exhibit decreased shrinkage and warpage.
Inventors
- 👤 Lloyd M. Robeson
- 👤 James E. Harris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 23:46
CPC Classifications
C; C08; C08L; C08L65/00; C08L71/00; C08L81/00; C08L81/06
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
147 words
An article molded from a blend of from about 5 to about 95 weight percent of a crystalline poly(aryl ether ketone) and from about 95 to about 5 weight percent of an amorphous poly(aryl ether sulfone) containing recurring units of the following formula: --O--E--O--E'-- wherein E is the residuum of a dihydric phenol, and E' is the residuum of a benzenoid compound having an inert electron withdrawing group in at least one of the positions ortho and para to the valence bonds; both of said residua are valently bonded to the ether oxygens through aromatic carbon atoms; said poly(aryl ether ketone) having a reduced viscosity of at least about 0.4 to about 5.0 dl/g as measured in concentrated sulphuric acid at 25° C. and said poly(aryl ether sulfone) having a reduced viscosity of from about 0.4 to greater than 2.5 as measured in N-methylpyrolidone at 25° C.
Claim 2
Dependent Claim
147 words
An article molded from a blend of from about 5 to about 95 weight percent of a crystalline poly(aryl ether ketone) and from about 95 to about 5 weight percent of an amorphous poly(aryl ether sulfone) containing recurring units of the following formula: --O--E--O--E'-- wherein E is the residuum of a dihydric phenol, and E' is the residuum of a benzenoid compound having an inert electron withdrawing group in at least one of the positions ortho and para to the valence bonds; both of said residua are valently bonded to the ether oxygens through aromatic carbon atoms; said poly(aryl ether ketone) having a reduced viscosity of at least about 0.4 to about 5.0 dl/g as measured in concentrated sulphuric acid at 25° C. and said poly(aryl ether sulfone) having a reduced viscosity of from about 0.4 to greater than 2.5 as measured in N-methylpyrolidone at 25° C.
Claim 3
Dependent Claim
19 words
An article as defined in claim 1 wherein the poly(aryl ether sulfone) has repeating units of the formula: ##STR41##
Claim 4
Dependent Claim
19 words
An article as defined in claim 1 wherein the poly(aryl ether sulfone) has repeating units of the formula: ##STR42##
Claim 5
Dependent Claim
19 words
An article as defined in claim 1 wherein the poly(aryl ether sulfone) contains units of the following formula: ##STR43##
Claim 6
Dependent Claim
138 words
An article as defined in claim 1 wherein the poly(aryl ether sulfone) contains units of the following formula: ##STR44## wherein R is independently hydrogen, C 1 to C 6 alkyl or C 4 to C 8 cycloalkyl, X' is independently ##STR45## wherein R 1 and R 2 are independently hydrogen or C 1 to C 9 alkyl, or ##STR46## wherein R 3 and R 4 are independently hydrogen or C 1 to C 8 alkyl, and a 1 is an integer of 3 to 8; --S--, --O--, or ##STR47## a is an integer of 0 to 4 and n is independently an integer of 1 to 3 and wherein the ratio of unit (I) to the sum of units (II) and/or (III) is greater than 1, wherein the units are attached to each other by an --O-- bond.
Claim 7
Dependent Claim
19 words
An article as defined in claim 5 wherein in the poly(aryl ether sulfone), unit (I) has the formula: ##STR48##
Claim 8
Dependent Claim
19 words
An article as defined in claim 5, wherein in the poly(aryl ether sulfone), unit (II) has the formula: ##STR49##
Claim 9
Dependent Claim
19 words
An article as defined in claim 5, wherein in the poly(aryl ether sulfone), unit (III) has the formula: ##STR50##
Claim 10
Dependent Claim
31 words
An article as defined in claim 5, wherein the poly(aryl ether sulfone) contains recurring units of the formula: ##STR51## said units being attached to each other or by an --O-- bond.
Claim 11
Dependent Claim
19 words
An article as defined in claim 5, wherein the poly(aryl ether sulfone) contains recurring units of the formula: ##STR52##
Claim 12
Dependent Claim
79 words
A molded article as defined in claim 1 wherein the poly(aryl ether sulfone) contains the repeating unit: ##STR53## wherein R 1 and R 2 are --O--, --SO 2 --, ##STR54## S with the proviso that at least one of R 1 and R 2 is --SO 2 -- and when n is O, R 1 is SO 2 , Ar is arylene of 6 to 24 carbon atoms, preferably phenylene or biphenylene; a and n are 0 to 4.
Claim 13
Dependent Claim
19 words
A molded article as defined in claim 1 wherein the poly(aryl ether sulfone) has the following repeating unit: ##STR55##
Claim 14
Dependent Claim
19 words
A molded article as defined in claim 1 wherein the poly(aryl ether sulfone) has the following repeating unit: ##STR56##
Claim 15
Dependent Claim
19 words
A molded article as defined in claim 1 wherein the poly(aryl ether sulfone) has the following repeat unit: ##STR57##
Claim 16
Dependent Claim
19 words
A molded article as defined in claim 1 wherein the poly(aryl ether sulfone) has the following repeat unit: ##STR58##
Claim 17
Dependent Claim
55 words
A molded article as defined in claim 1 wherein the poly(aryl ether ketone) has a repeating unit of the following formula: ##STR59## wherein Ar is independently a divalent aromatic radical selected from phenylene, biphenylene or naphthylene, X is independently O, ##STR60## or a direct bond and n is an integer of from 0 to 3.
Claim 18
Dependent Claim
40 words
A molded article as defined in claim 1 wherein the poly(aryl ether ketone) has a repeating unit of the following formula: ##STR61## wherein a is an integer of 1 to 4 and b, c, and d are 0 to 1.
Claim 19
Dependent Claim
32 words
A molded article as defined in claim 1 wherein the poly(aryl ether ketone) has a repeating unit of the following formula: ##STR62## wherein X is independently O, ##STR63## or a direct bond.
Claim 20
Dependent Claim
49 words
A molded article as defined in claim 1 wherein the poly(aryl ether ketone) has a repeating unit of the following: ##STR64## wherein Ar is a divalent aromatic radical selected from phenylene, biphenylene or napthylene, X is independently O, ##STR65## or a direct bond and e is 0 or 1.
Claim 21
Dependent Claim
50 words
A molded article as defined in claim 1 wherein the poly(aryl ether ketone) has a repeating unit of the following formula: ##STR66## wherein Ar is a divalent aromatic radical selected from phenylene, biphenylene or naphthylene, X is independently O, ##STR67## or a direct bond and e is 0 or 1.
Claim 22
Dependent Claim
21 words
A molded article as defined in claim 1 wherein the poly(aryl ether ketone) has a repeating unit of the formula: ##STR68##
Claim 23
Dependent Claim
21 words
A molded article as defined in claim 1 wherein the poly(aryl ether ketone) has a repeating unit of the formula: ##STR69##
Claim 24
Dependent Claim
21 words
A molded article as defined in claim 1 wherein the poly(aryl ether ketone) has a repeating unit of the formula: ##STR70##
Claim 25
Dependent Claim
21 words
A molded article as defined in claim 1 wherein the poly(aryl ether ketone) has a repeating unit of the formula: ##STR71##
Claim 26
Dependent Claim
26 words
A molded article as defined in claim 1 wherein the poly(aryl ether ketone) has a repeating unit selected from one or more of the following: ##STR72##
References Cited (Backward Citations)
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US3324199A
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US3729527A
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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) | 1989-11-24 | 1990-05-26 | 1990-11-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-11-24 | 1994-05-26 | 1994-11-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-11-24 | 1998-05-26 | 1998-11-25 | $7700.00 | Window Closed / Lapsed |