Patent US4762747A successfully refreshed from Google Patents.
US4762747A
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US
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Single component aqueous acrylic adhesive compositions for flexible printed circuits and laminates made therefrom
Assignee: Industrial Technology Research Institute
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Filing: 1986-07-29
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Granted: 1988-08-09
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Expires: 2006-07-29
Abstract
Abstract Described is a single component aqueous adhesive composition especially suitable for flexible printed circuits. The composition consists of water and a homogeneous film-forming acrylic polymer. The acrylic polymer is a polymerization product of (A) acrylonitrile or methacrylonitrile, or mixture thereof, (B) an alkyl acrylate or methacrylate having 1-12 carbon atoms in the alkyl group, or mixture thereof, (C) an oxirane-containing polymerizing ethylenic monomer and (D) a hydroxyl- or amide-containing acrylate or methacrylate. The adhesive composition is useful for bonding metal foils to polyimide films in the manufacture of flexible printed circuits.
Inventors
- 👤 Jonq-Min Liu
- 👤 Fu-Lung Chen
- 👤 Yeong-Cherng Chiou
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:48
CPC Classifications
B; B32; B32B; B32B15/00; B32B15/04; B32B15/08; B32B15/20; B32B7/00; B32B7/04; B32B7/12; C; C09; C09J; C09J133/00; C09J133/04; C09J133/06; C09J133/062; C09J133/068; C09J7/00; C09J7/30; C09J7/38; C09J7/381; C09J7/385; H; H05; H05K; H05K3/00; H05K3/38; H05K3/386; B32B2307/00; B32B2307/30; B32B2307/304; B32B2311/00; B32B2311/12; B32B2311/22; B32B2311/24; B32B2379/00; B32B2379/08; B32B2457/00; B32B2457/08; H05K1/00; H05K1/02; H05K1/03; H05K1/0393; H05K2201/00; H05K2201/01; H05K2201/0137; H05K2201/0154; H05K2201/03; H05K2201/0332; H05K2201/0335; H05K2201/0355; Y; Y10; Y10S; Y10S428/00; Y10S428/901; Y10T; Y10T428/00; Y10T428/28; Y10T428/2848; Y10T428/2852; Y10T428/2878; Y10T428/2887; Y10T428/2891; Y10T428/31504; Y10T428/31678; Y10T428/31681; Y10T428/31721
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
103 words
An aqueous acrylic adhesive composition useful for flexible printed circuits consisting essentially of water and an acrylic polymer, the acrylic polymer comprising (a) 15-60% by weight of acrylonitrile, methacrylonitrille or mixture thereof, (b) 30-85% by weight of an alkyl acrylate or methacrylate having 1-12 carbon atoms in the alkyl group, or mixture thereof, (c) 1-30% by weight of an oxirane-containing polymerizing ethylenic monomer, (d) up to 15% by weight of a hydroxyl or amide-containing acrylate or methacrylate and, (e) styrene; the acrylic polymer being present in an amount of about 10-60% by weight of the composition; the composition comprising a single component adhesive.
Claim 2
Dependent Claim
103 words
An aqueous acrylic adhesive composition useful for flexible printed circuits consisting essentially of water and an acrylic polymer, the acrylic polymer comprising (a) 15-60% by weight of acrylonitrile, methacrylonitrille or mixture thereof, (b) 30-85% by weight of an alkyl acrylate or methacrylate having 1-12 carbon atoms in the alkyl group, or mixture thereof, (c) 1-30% by weight of an oxirane-containing polymerizing ethylenic monomer, (d) up to 15% by weight of a hydroxyl or amide-containing acrylate or methacrylate and, (e) styrene; the acrylic polymer being present in an amount of about 10-60% by weight of the composition; the composition comprising a single component adhesive.
Claim 3
Dependent Claim
12 words
A polyimide film coated with the acrylic adhesive composition of claims 1.
Claim 4
Dependent Claim
64 words
The composition of claim 1 wherein the polymer comprises, based on the weight of the polymer, 30-40% by weight of acrylonitrile or methacrylonitrile, 50-65% by weight of an alkyl acrylate having 2-8 carbon atoms in the alkyl group, 2-15% by weight of the oxirane-containing polymerizing ethylenic monomer, 0.5-10% by weight of the hydroxyl- or amide-containing acrylate or methacrylate and 0.5% by weight of styrene.
Claim 5
Dependent Claim
17 words
The composition of claim 1 wherein the alkyl acrylate is ethyl acrylate, butyl acrylate or 2-ethylhexyl acrylate.
Claim 6
Dependent Claim
12 words
The composition of claim 4 wherein the alkyl acrylate is butyl acrylate.
Claim 7
Dependent Claim
16 words
The composition of claim 1 wherein the oxirane-containing polymerizing ethylenic monomer is glycidyl acrylate or methacrylate.
Claim 8
Dependent Claim
14 words
The composition of claim 6 wherein the oxirane-containing polymerizing ethylenic monomer is glycidyl methacrylate.
Claim 9
Dependent Claim
32 words
The composition of claim 1 wherein the said hydroxyl- or amide-containing acrylate or methacrylate is selected from the group consisting of 2-hydroxylethyl acrylate, 2-hydroxylpropyl acrylate, acrylamide, 2-hydroxylethyl methacrylate, 2-hydroxylpropyl methacrylate, and methacrylamide.
Claim 10
Dependent Claim
18 words
The composition of claim 8 wherein the hydroxyl- or amide-containing acrylate or methacrylate is 2-hydroxylethyl acrylate or acrylamide.
Claim 11
Dependent Claim
27 words
A laminate comprising a polyimide film coated with the acrylic adhesive composition of claims 1, and at least one metal foil with the polyimide film adhered thereto.
Claim 12
Dependent Claim
21 words
The laminate, as in claim 10, which is capable of withstanding a 30 sec immersion in a solder bath at 260°.
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) | 1991-08-09 | 1992-02-08 | 1992-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-08-09 | 1996-02-08 | 1996-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-08-09 | 2000-02-08 | 2000-08-09 | $7700.00 | Window Closed / Lapsed |