US4808473A
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Polyamide-imide aromatic sulfone polymer films
Assignee: Syensqo Specialty Polymers USA LLC
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Filing: 1987-06-04
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Granted: 1989-02-28
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Expires: 2007-06-04
Abstract
Abstract Films having a thickness of about 0.5 to about 10 mils comprising about 0.1 to about 50 weight percent of aromatic sulfone polymers and about 99.9 to about 50 percent by weight of polyamide-imides are disclosed. The films are useful in those high temperature applications which require a specimen of 10 mils or less. The alloy film can also be used in the electrical/electronic field in such applications as flexible circuit boards. The alloy film can also be die punched into high temperature spacers and washers which cannot be injection molded due to their thin cross-section.
Inventors
- 👤 Gary T. Brooks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:23
CPC Classifications
C; C08; C08J; C08J5/00; C08J5/18; C08L; C08L79/00; C08L79/04; C08L79/08; C08L81/00; C08L81/06; C08J2379/00; C08J2379/04; C08J2379/08; C08J2381/00; C08J2381/06; H; H05; H05K; H05K1/00; H05K1/02; H05K1/03; H05K1/0313; H05K1/032; H05K1/0333; H05K1/0346; Y; Y10; Y10T; Y10T428/00; Y10T428/26; Y10T428/263; Y10T428/264; Y10T428/265; Y10T428/266; Y10T428/269; Y10T428/31504; Y10T428/31721
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
120 words
An extruded film having a thickness of about 0.5 to about 10 mils comprising about 0.1 to about 50 percent by weight of an aromatic sulfone polymer, and about 99.9 to about 50 percent by weight of an amide-imide phthalamide copolymer comprising recurring amide-imide units A: ##STR10## and recurring amide units B: ##STR11## wherein the molar ratio of A to B units is about 80 to about 20 to about 20 to about 80, wherein R is a divalent aromatic hydrocarbon radical of from about 6 to about 20 carbon atoms or two divalent hydrocarbons joined directly or by stable linkages selected from the group consisting of --O--, methylene, --CO--, --SO 2 -- and X is a divalent aromatic radical.
Claim 2
Dependent Claim
120 words
An extruded film having a thickness of about 0.5 to about 10 mils comprising about 0.1 to about 50 percent by weight of an aromatic sulfone polymer, and about 99.9 to about 50 percent by weight of an amide-imide phthalamide copolymer comprising recurring amide-imide units A: ##STR10## and recurring amide units B: ##STR11## wherein the molar ratio of A to B units is about 80 to about 20 to about 20 to about 80, wherein R is a divalent aromatic hydrocarbon radical of from about 6 to about 20 carbon atoms or two divalent hydrocarbons joined directly or by stable linkages selected from the group consisting of --O--, methylene, --CO--, --SO 2 -- and X is a divalent aromatic radical.
Claim 3
Dependent Claim
18 words
The extruded film of claim 1 wherein the aromatic sulfone polymer is of the following repeating structure: ##STR12##
Claim 4
Dependent Claim
22 words
The extruded film of claim 1 wherein the molar ratio of A units to B units is about 1 to about 1.
Claim 5
Dependent Claim
17 words
The extruded film of claim 3 wherein the aromatic sulfone polymer comprises the following repeating structure: ##STR13##
Claim 6
Dependent Claim
52 words
The extruded film of claim 4 wherein said amide-imide phthalamide copolymer comprises about 90 to about 70 percent by weight of said film, said aromatic sulfone polymer comprises about 10 to about 30 percent by weight of said film, and R and X are the same and have the following structure: ##STR14##
Claim 7
Dependent Claim
19 words
The extruded film of claim 4 wherein X and R are the same and have the following structure: ##STR15##
Claim 8
Dependent Claim
161 words
A process for forming an amide-imide phthalamide copolymer film with improved tensile properties which comprises forming a blend by combining (1) about 99.9 to about 50 percent by weight of an amide-imide phthalamide copolymer having recurring amide units A: ##STR16## which are capable of undergoing imidization and recurring amide units B: ##STR17## wherein the molar ratio of A units to B units is about 80 to about 20 to about 20 to about 80, wherein R is a divalent aromatic hydrocarbon radical of from about 6 to about 20 carbon atoms or two divalent hydrocarbons joined directly or by stable linkages selected from the group consisting --O--, methylene, --CO--, --SO 2 --, and wherein X is a divalent aromatic radical and → denotes isomerization, and (2) about 0.1 to about 50 percent by weight of a polyethersulfone having the following repeating structure: ##STR18## and extruding said blend to form a film having a thickness of about 0.5 to about 10 mils.
Claim 9
Dependent Claim
161 words
A process for forming an amide-imide phthalamide copolymer film with improved tensile properties which comprises forming a blend by combining (1) about 99.9 to about 50 percent by weight of an amide-imide phthalamide copolymer having recurring amide units A: ##STR16## which are capable of undergoing imidization and recurring amide units B: ##STR17## wherein the molar ratio of A units to B units is about 80 to about 20 to about 20 to about 80, wherein R is a divalent aromatic hydrocarbon radical of from about 6 to about 20 carbon atoms or two divalent hydrocarbons joined directly or by stable linkages selected from the group consisting --O--, methylene, --CO--, --SO 2 --, and wherein X is a divalent aromatic radical and → denotes isomerization, and (2) about 0.1 to about 50 percent by weight of a polyethersulfone having the following repeating structure: ##STR18## and extruding said blend to form a film having a thickness of about 0.5 to about 10 mils.
Claim 10
Dependent Claim
21 words
The process of claim 7 wherein the molar ratio of A units to B units is about 1 to about 1.
Claim 11
Dependent Claim
49 words
The process of claim 8 wherein said amide-imide phthalamide copolymer comprises about 90 to about 70 percent by weight of said blend, said polyethersulfone comprises about 10 to about 30 percent by weight of said blend, and R and X are the same and have the following structure: ##STR19##
Claim 12
Dependent Claim
152 words
A process for forming an amide-imide phthalamide copolymer film with improved tensile properties which comprises forming a blend by combining (1) about 99.9 to about 50 percent by weight of an amide-imide phthalamide copolymer having recurring amide-imide units A: ##STR20## and recurring amide units B: ##STR21## wherein the molar ratio of A units to B units is about 80 to about 20 to about 20 to about 80 wherein R is a divalent aromatic hydrocarbon radical of from about 6 to about 20 carbon atoms or two divalent hydrocarbons joined directly or by stable linkages selected from the group consisting of --O--, methylene, --CO--, --SO 2 --, and wherein X is a divalent aromatic radical, and (2) about 0.1 to about 50 percent by weight of a polyethersulfone having the following repeating structure: ##STR22## and extruding said blend to form a film having a thickness of about 0.5 to about 10 mils.
Claim 13
Dependent Claim
152 words
A process for forming an amide-imide phthalamide copolymer film with improved tensile properties which comprises forming a blend by combining (1) about 99.9 to about 50 percent by weight of an amide-imide phthalamide copolymer having recurring amide-imide units A: ##STR20## and recurring amide units B: ##STR21## wherein the molar ratio of A units to B units is about 80 to about 20 to about 20 to about 80 wherein R is a divalent aromatic hydrocarbon radical of from about 6 to about 20 carbon atoms or two divalent hydrocarbons joined directly or by stable linkages selected from the group consisting of --O--, methylene, --CO--, --SO 2 --, and wherein X is a divalent aromatic radical, and (2) about 0.1 to about 50 percent by weight of a polyethersulfone having the following repeating structure: ##STR22## and extruding said blend to form a film having a thickness of about 0.5 to about 10 mils.
Claim 14
Dependent Claim
21 words
The process of claim 10 wherein the molar ratio of A units to B units is about 1 to about 1.
Claim 15
Dependent Claim
49 words
The process of claim 11 wherein said amide-imide phthalamide copolymer comprises about 90 to about 70 percent by weight of said blend, said polyethersulfone comprises about 10 to about 30 percent by weight of said blend, and R and X are the same and have the following structure: ##STR23##
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1992-02-28 | 1992-08-29 | 1993-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-02-28 | 1996-08-29 | 1997-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-02-28 | 2000-08-29 | 2001-02-28 | $7700.00 | Window Closed / Lapsed |