US5162439A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adhesive for printed circuit boards based on epoxy resins, hydrogenated polymer rubbers and curing agents
Assignee: Zeon Corp
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Filing: 1989-11-17
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Granted: 1992-11-10
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Expires: 2009-11-17
Abstract
Abstract In an adhesive for printed circuit boards, whose main components are an epoxy resin and a polymer rubber, the improvement wherein the polymer rubber is a hydrogenated conjugated diene polymer rubber having not more than 100 ppm of metal content, not more than 100 ppm of ion content as determined by ion chromatography, and an iodine value of not more than 120.
Inventors
- 👤 Suguru Tsuji
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 03:47
CPC Classifications
H; H05; H05K; H05K3/00; H05K3/38; H05K3/386; C; C09; C09J; C09J115/00; C09J163/00; C08; C08L; C08L2666/00; C08L2666/02; C08L2666/04; C08L2666/08; C08L2666/14; H05K2201/00; H05K2201/01; H05K2201/0104; H05K2201/0133; H05K2201/03; H05K2201/0332; H05K2201/0335; H05K2201/0355; Y; Y10; Y10S; Y10S428/00; Y10S428/901
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
65 words
In an adhesive for printed circuit boards, consisting of and epoxy resin, a polymer rubber, a curing agent and a solvent, the improvement wherein the polymer rubber is a hydrogenated conjugated diene polymer rubber having not more than 10 ppm of metal content, not more than 100 ppm of ion content as determined by ion chromatography, and an iodine value of not more than 120.
Claim 2
Dependent Claim
65 words
In an adhesive for printed circuit boards, consisting of and epoxy resin, a polymer rubber, a curing agent and a solvent, the improvement wherein the polymer rubber is a hydrogenated conjugated diene polymer rubber having not more than 10 ppm of metal content, not more than 100 ppm of ion content as determined by ion chromatography, and an iodine value of not more than 120.
Claim 3
Dependent Claim
27 words
The adhesive of claim 1 in which the hydrogenated conjugated diene polymer rubber is a hydrogenation product of a polymer of at least one conjugated diene monomer.
Claim 4
Dependent Claim
35 words
The adhesive of claim 1 in which the hydrogenated conjugated diene polymer rubber is a hydrogenation project of a copolymer of at least one conjugated diene monomer ant at least one other monomer copolymerizable therewith.
Claim 5
Dependent Claim
22 words
The adhesive of claim 3 in which the hydrogenated conjugated diene polymer rubber is a hydrogenation project of an acrylonitrile-butadiene copolymer rubber.
Claim 6
Dependent Claim
23 words
The adhesive of claim 3 in which the hydrogenated conjugated diene polymer rubber is a hydrogenation project of a butadiene-acrylonitrile-methacrylic acid terpolymer rubber.
Claim 7
Dependent Claim
22 words
The adhesive of claim 3 in which the hydrogenated conjugated diene polymer is a hydrogenation project of a butadiene-acrylonitrile-butyl acrylate termpolymer rubber.
Claim 8
Dependent Claim
23 words
The adhesive of claim 1 in which the hydrogenated conjugated diene polymer rubber has a metal content of not more than 80 ppm.
Claim 9
Dependent Claim
23 words
The adhesive of claim 1 in which the hydrogenated conjugated diene polymer rubber has an ion content of not more than 80 ppm.
Claim 10
Dependent Claim
22 words
The adhesive of claim 1 in which the hydrogenated conjugated diene polymer rubber has an iodine value of not more than 80.
Claim 11
Dependent Claim
27 words
The adhesive of claim 1 in which the hydrogenated conjugated diene polymer rubber and the epoxy resin are present in a weight ratio of 90-10 : 10-90.
Claim 12
Dependent Claim
19 words
The adhesive of claim 1 in which the polymer rubber is a hydrogenated, nitrile group-containing conjugated diene polymer rubber.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-11-10 | 1996-05-11 | 1996-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-11-10 | 2000-05-11 | 2000-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-11-10 | 2004-05-11 | 2004-11-10 | $7700.00 | Window Closed / Lapsed |