US5621068A
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Thermoplastic polyimide polymer; thermoplastic polyimide film; polyimide laminate; and method of manufacturing the laminate
Assignee: Kaneka Corp
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Filing: 1994-08-03
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Granted: 1997-04-15
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Expires: 2014-08-03
Abstract
Abstract PCT No. PCT/JP94/01286 Sec. 371 Date Feb. 22, 1995 Sec. 102(e) Date Feb. 22, 1995 PCT Filed Aug. 3, 1994 PCT Pub. No. WO95/04100 PCT Pub. Date Feb. 9, 1995A thermoplastic polyimide film comprising a thermoplastic polyimide polymer, a polyimide laminate, respectively being suited for use as cover-lay adhesive agent and a cover-lay film capable of exerting distinguished thermal resistant property, processability and adhesion property useful for the manufacture of flexible printed circuit boards, and yet, suited for use as the adhesive-agent layers of flexible copper-coated laminates and bilateral adhesive sheets; and a method of manufacturing the polyimide laminate. The thermoplastic polyimide polymer represented by the general formula (1) specified below: <IMAGE> (1) <IMAGE> +TR <IMAGE> wherein Ar1, Ar2, Ar4 and Ar6, represents divalent organic radical, whereas Ar3 and Ar5 represent quadrivalent organic radical, wherein l, m amd n designate positive integer of 0 to 15, wherein the sum of 1 and m is 1 or more than 1, and wherein t designates positive integer of 1 or more than 1.
Inventors
- 👤 Yoshifumi Okamoto
- 👤 Hiroyuki Furutani
- 👤 Kazuhisa Danno
- 👤 Junya Ida
- 👤 Hirosaku Nagano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 01:20
CPC Classifications
C; C08; C08G; C08G73/00; C08G73/06; C08G73/10; B; B32; B32B; B32B15/00; B32B15/04; B32B15/08; B32B27/00; B32B27/28; B32B27/281; B32B38/00; B32B38/16; B32B38/164; B32B7/00; B32B7/04; B32B7/12; C08G73/1042; C08J; C08J5/00; C08J5/18; C09; C09J; C09J179/00; C09J179/04; C09J179/08; B32B2379/00; B32B2379/08; B32B2457/00; B32B2457/08; C08L; C08L79/00; C08L79/04; C08L79/08; H; H05; H05K; H05K1/00; H05K1/02; H05K1/03; H05K1/0313; H05K1/032; H05K1/0346; H05K3/00; H05K3/22; H05K3/28; H05K3/281; H05K3/38; H05K3/386; Y; Y10; Y10S; Y10S428/00; Y10S428/901; Y10T; Y10T428/00; Y10T428/31504; Y10T428/3167; Y10T428/31674; Y10T428/31721
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
85 words
Thermoplastic polyimide film comprising a thermoplastic polyimide polymer which is represented by the general formula (1) specified below: ##STR22## where Ar 1 , Ar 2 , Ar 4 , and Ar 6 , respectively represent divalent organic radical; Ar 3 and Ar 5 respectively represent quadrivalent organic radical; l, m, and n, respectively designate a positive integer of 0 to 15; and the sum of l and m is one or more than one; and t represents positive integer of one or more than one.
Claim 2
Dependent Claim
85 words
Thermoplastic polyimide film comprising a thermoplastic polyimide polymer which is represented by the general formula (1) specified below: ##STR22## where Ar 1 , Ar 2 , Ar 4 , and Ar 6 , respectively represent divalent organic radical; Ar 3 and Ar 5 respectively represent quadrivalent organic radical; l, m, and n, respectively designate a positive integer of 0 to 15; and the sum of l and m is one or more than one; and t represents positive integer of one or more than one.
Claim 3
Dependent Claim
40 words
The thermoplastic polyimide film as defined in claim 1, wherein said Ar 1 specified in said general formula (1) is at least one kind selected from a group of divalent organic radicals shown in the constitutional formula specified below: ##STR23##
Claim 4
Dependent Claim
42 words
The thermoplastic polyimide film as defined in claim 1 or 2, wherein said Ar 2 specified in said general formula (1) is at least one kind selected from a group of divalent aromatic radicals shown in the constitutional formulas specified below: ##STR24##
Claim 5
Dependent Claim
46 words
The thermoplastic polyimide film as defined in any of the preceding claims 1 or 2, wherein said Ar 3 specified in said general formula (1) is at least one kind selected from a group of quadrivalent aromatic radicals shown in the constitutional formulas specified below: ##STR25##
Claim 6
Dependent Claim
46 words
The thermoplastic polyimide film as defined in any of the preceding claims 1 or 2, wherein said Ar 4 specified in said general formula (1) is at least one kind selected from a group of divalent organic radicals shown in thee constitutional formulas specified below: ##STR26##
Claim 7
Dependent Claim
46 words
The thermoplastic polyimide film as defined in any of the preceding claims 1 or 2, wherein said Ar 5 specified in said general formula (1) is at least one kind selected from a group of quadrivalent aromatic radicals shown in the constitutional formulas specified below: ##STR27##
Claim 8
Dependent Claim
46 words
The thermoplastic polyimide film as defined in any of the preceding claims 1 or 2, wherein said Ar 6 specified in said general formula (1) is at least one kind selected from a group of divalent aromatic radicals shown in the constitutional formulas specified below: ##STR28##
Claim 9
Dependent Claim
32 words
Polyimide laminate comprising layers of the thermoplastic polyimide film defined in any of the preceding claims 1 or 2, wherein said layers are laminated by way of superposition on an exfoliatable film.
Claim 10
Dependent Claim
41 words
An adhesive sheet comprising of layers of thermoplastic polyimide film defined in any of the preceding claims 1 or 2, wherein said layers are laminated by way of superposition on both surfaces or a single surface of a nonthermoplastic polyimide film.
Claim 11
Dependent Claim
38 words
Polyimide laminate comprising; a base film layer composed of nonthermoplastic polyimide polymer; adhesive-agent layers composed of thermoplastic polyimide polymer specified in any of the preceding claims 1 or 2; and a conductive layer composed of electrically conductive material.
Claim 12
Independent Claim
86 words
A method of manufacturing polyimide laminate comprising sequential steps including the following; a step to coat a base-film layer composed of nonthermoplastic polyimide polymer with the solution of precursor of thermoplastic polyimide polymer specified in any of the preceding claims 1 or 2; a step to dry said solution-coated base-film layer; a step to imidize said solution coated base-film layer; a step to superpose a conductive layer on yielded thermoplastic polyimide layers; and a final step to adherently laminate said layers via a thermal pressing process.
Claim 13
Independent Claim
72 words
A method of manufacturing polyimide laminate comprising sequential steps including the following; a step to sequentially superpose a film composed of thermoplastic polyimide polymer specified in any of the preceding claims 1 or 2 and a conductive layer on a base film composed of nonthermoplastic polyimide polymer; and a final step to adherently laminate said film and said conductive layer in conjunction with said base film by executing a thermal pressing process.
References Cited (Backward Citations)
FR1540930A
Cited
JPS512798A
Cited
JPS6399282A
Cited
JPS63189490A
Cited
JPH04212206A
Cited
JPH04198208A
Cited
JPH04366131A
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JPH05105850A
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JPH05339374A
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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) | 2000-04-14 | 2000-10-14 | 2001-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-04-14 | 2004-10-14 | 2005-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-04-14 | 2008-10-14 | 2009-04-15 | $7700.00 | Window Closed / Lapsed |