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US5932345A
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Thermally fusible adhesive copolymer, articles made therefrom, and method for producing the same
Assignee: Kaneka Corp
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Filing: 1996-01-11
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Granted: 1999-08-03
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Expires: 2016-01-11
Abstract
Abstract PCT No. PCT/JP96/00049 Sec. 371 Date Sep. 10, 1996 Sec. 102(e) Date Sep. 10, 1996 PCT Filed Jan. 11, 1996 PCT Pub. No. WO96/21693 PCT Pub. Date Jul. 18, 1996A novel heat-fusible copolymer possessing a combination of excellent properties, including mechanical strength, resistivity against radioactive rays, chemical resistance, low temperature stability, thermal resistance, processabilty, adhesiveness, thermal fusible adhesive stability, and simultaneously satisfying requirements relating to low hygroscopic characteristic and stable dielectric constant. Also, a powder, film, laminated film, laminated insulating material, and article, such as electronic modules and capacitors, made from a thermoplastic polyimide resin composed mainly of the copolymer and suitable for use as electronic components and materials for electronic circuit components. The copolymer possesses a glass transition temperature of 100 DEG C. to 250 DEG C., a hygroscopic degree of 1 or less, and a dielectric rate of 3 or less, and has the following formula: wherein Ar1 represents a quadrivalent organic radical, Ar2 represents a divalent organic radial, R represents a divalent organic radical, X represents trivalent bonding radicals, m and n are each integers of 0 or more, the sum of m and n being an integer of 1 or more, and 1 is an integer of 1 or more.
Inventors
- 👤 Hiroyuki Furutani
- 👤 Naoki Hase
- 👤 Junya Ida
- 👤 Yoshifumi Okamoto
- 👤 Hitoshi Nojiri
- 👤 Shinji Inoue
- 👤 Hirosaku Nagano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 15:04
CPC Classifications
H; H10; H10W; H10W74/00; H10W74/40; H10W74/47; B; B29; B29C; B29C48/00; B29C48/25; B29C48/30; C; C08; C08G; C08G73/00; C08G73/06; C08G73/10; C08G73/1042; C08G73/1046; C08G73/105; C08G73/1089; C08G73/16; C08J; C08J5/00; C08J5/18; C09; C09J; C09J179/00; C09J179/04; C09J179/08; H01; H01G; H01G4/00; H01G4/002; H01G4/018; H01G4/06; H01G4/14; H01G4/18; C08J2379/00; C08J2379/04; C08J2379/08; H05; H05K; H05K1/00; H05K1/02; H05K1/03; H05K1/0313; H05K1/032; H05K1/0346; H10W72/00; H10W72/01; H10W72/015; H10W72/071; H10W72/072; H10W72/07251; H10W72/073; H10W72/075; H10W72/20; H10W72/50; H10W72/521; H10W72/522; H10W72/523; H10W72/551; H10W72/552; H10W72/555; H10W72/851; H10W72/853; H10W72/865; H10W72/874; H10W72/884; H10W90/00; H10W90/701; H10W90/721; H10W90/726; H10W90/731; H10W90/736; H10W90/751; H10W90/756; H10W99/00; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24802; Y10T428/24917; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/294; Y10T428/2942; Y10T428/2949; Y10T428/31504; Y10T428/31721
Claims Analysis
Total Claims: 20
Claim 1
Independent Claim
125 words
A thermally-fusible adhesive copolymer, said copolymer having a glass transition point in a range of from 100° C. to 250° C., a hygroscopic degree of not more than 1%, and a dielectric rate of not more than 3, said copolymer having a general formula (1) as follows ##STR31## wherein Ar 1 represents a quadrivalent organic radical, Ar 2 represents a divalent organic radical, R represents a divalent organic radical selected from the group consisting of ##STR32## wherein X represents a trivalent bonding radical selected from the group consisting of ##STR33## wherein m and n are each integers of 0 or more, and the sum of m and n is an integer of 1 or more, and wherein 1 is an integer of 1 or more.
Claim 2
Dependent Claim
125 words
A thermally-fusible adhesive copolymer, said copolymer having a glass transition point in a range of from 100° C. to 250° C., a hygroscopic degree of not more than 1%, and a dielectric rate of not more than 3, said copolymer having a general formula (1) as follows ##STR31## wherein Ar 1 represents a quadrivalent organic radical, Ar 2 represents a divalent organic radical, R represents a divalent organic radical selected from the group consisting of ##STR32## wherein X represents a trivalent bonding radical selected from the group consisting of ##STR33## wherein m and n are each integers of 0 or more, and the sum of m and n is an integer of 1 or more, and wherein 1 is an integer of 1 or more.
Claim 3
Dependent Claim
27 words
A thermally-fusible adhesive copolymer according to claim 1, wherein said quadrivalent organic radical Ar 1 is at least one member selected from the group consisting of ##STR34##
Claim 4
Dependent Claim
72 words
A thermally-fusible adhesive copolymer according to claim 1, wherein said divalent radical Ar 2 is at least one member selected from the group consisting of wherein Rg represents a methyl, ethyl, propyl, butyl, pentyl, or phenyl radical, wherein j is an integer in a range of from 1 to 10, wherein Rf represents hydrogen or a methyl radical, and wherein i is an integer in a range of from 1 to 4.
Claim 5
Dependent Claim
19 words
Powder particles comprising a thermoplastic polyimide resin, said thermoplastic polyimide resin comprising the thermally-fusible adhesive copolymer of claim 1.
Claim 6
Dependent Claim
19 words
A film comprising a thermoplastic polyimide resin, said thermoplastic polyimide resin comprising the thermally-fusible adhesive copolymer of claim 1.
Claim 7
Dependent Claim
13 words
A film according to claim 5, wherein said film has a tubular configuration.
Claim 8
Dependent Claim
55 words
A method of manufacturing a film having a tubular configuration, said method comprising the sequential steps of: fully drying a thermoplastic polyimide resin comprising the thermally-fusible adhesive copolymer of claim 1; charging the fully dried thermoplastic polyimide resin into a melting/extruding machine; and melt extruding the charged, fully dried thermoplastic polyimide resin into tubular form.
Claim 9
Dependent Claim
36 words
A film comprising: a base film layer made from a thermally resistant resin; and a thermally-fusible adhesive layer made from a thermoplastic polyimide resin, said thermoplastic polyimide resin comprising the thermally-fusible adhesive copolymer of claim 1.
Claim 10
Dependent Claim
40 words
A film according to claim 8, wherein said thermally resistant resin is a non-thermoplastic rein comprising at least one acid dianhydride selected from the group consisting of ##STR35## and at least one diamine selected from the group consisting of ##STR36##10.
Claim 11
Dependent Claim
32 words
A film comprising: a conductive layer comprising an electrical conductor; and a film layer made from a thermoplastic polyimide resin, said thermoplastic polyimide resin comprising the thermally-fusible adhesive copolymer of claim 1.
Claim 12
Dependent Claim
36 words
A film comprising: a base film layer; an intermediate layer made from a thermoplastic polyimide resin, said thermoplastic polyimide resin comprising the thermally-fusible adhesive copolymer of claim 1; and a conductive layer comprising an electrical conductor.
Claim 13
Dependent Claim
86 words
A laminated heat insulating material comprising: a series of reflective films, said reflective films having respective metal layers formed on one of the surfaces of the reflective films, portions of the reflective films being made from a thermoplastic polyimide resin comprising the thermally-fusible adhesive copolymer of claim 1; and net-form spacers made from plastic yarns, said spacers being arranged to interpose any two reflective films of said series of reflective films so that said two reflective films do not come into direct contact with each other.
Claim 14
Dependent Claim
32 words
A laminated heat insulating material according to claim 12, wherein said spacers are made from textile fabric or knit comprising plastic yarns, each of which has a maximum thickness of 50 deniers.
Claim 15
Dependent Claim
51 words
A laminated heat insulating material according to claim 12, wherein said reflective films are arranged so that one or both surfaces of each of said metal layers is on a cured film comprising a meltable substance or solution of the thermoplastic polyimide resin comprising the thermally-fusible adhesive copolymer of claim 1.
Claim 16
Dependent Claim
53 words
A laminated heat insulating material according to claim 12, wherein said reflective films are arranged so that one or both surfaces of each of said metal layers is on an imidized, dried film formed from a solution containing a precursor of the thermoplastic polyimide resin comprising the thermally-fusible adhesive copolymer of claim 1.
Claim 17
Dependent Claim
46 words
A method of manufacturing the laminated heat insulating material of claim 12, said method comprising the steps of: alternately laminating the reflection films with the net-form spacers; and integrally adhering the reflection films and the net-form spacers by employing the thermoplastic polyimide resin as an adhesive.
Claim 18
Dependent Claim
38 words
A method of manufacturing the laminated heat insulating material of claim 12, said method comprising the steps of: alternately laminating the reflection films with the net-form spacers; and integrally sewing the reflection films and the net-form spacers together.
Claim 19
Dependent Claim
61 words
An electronic module comprising: a lead frame; and an electronic element directly or indirectly connected to said lead frame via an adhesive agent layer, wherein said electronic module is sealed with a resin, except for a part of said lead frame, and wherein said adhesive agent layer formed from a thermoplastic polyimide resin comprising the thermally-fusible adhesive copolymer of claim 1.
Claim 20
Dependent Claim
20 words
A capacitor comprising a dielectric layer formed from a thermoplastic polyimide resin comprising the thermally-fusible adhesive copolymer of claim 1.
References Cited (Backward Citations)
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2002-08-02 | 2003-02-01 | 2003-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-08-02 | 2007-02-01 | 2007-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-08-02 | 2011-02-01 | 2011-08-03 | $7700.00 | Window Closed / Lapsed |