Patent US4601972A successfully refreshed from Google Patents.
US4601972A
Expired / Lapsed
US
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Photodefinable triazine based composition
Assignee: AT&T Inc
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Filing: 1985-07-26
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Granted: 1986-07-22
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Expires: 2005-07-26
Abstract
Abstract A multilayer circuit device comprises a substrate having a plurality of metallized patterns thereon said patterns being separated by a photodefined polymeric dielectric film formed from a polymeric photodefinable triazine base mixture including a photosensitive acrylate moiety. The various circuit patterns are interconnected by means of microvias through the polymeric film or film layers.
Inventors
- 👤 Richard D. Small, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:51
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/004; G03F7/027; H; H05; H05K; H05K3/00; H05K3/46; H10; H10W; H10W70/00; H10W70/60; H10W70/611; H10W70/67; H10W70/68; H10W70/685; H05K2201/00; H05K2201/01; H05K2201/0104; H05K2201/0133; H05K2201/09; H05K2201/09209; H05K2201/095; H05K2201/09509; H05K3/0011; H05K3/0017; H05K3/0023
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
68 words
A photodefinable dielectric material comprising a triazine mixture which mixture comprises 50-60 weight percent triazine, at least one member of the group consisting of an epoxy acrylate hybrid resin and an acrylated rubber resin in an amount totalling 20-30 weight percent, 5-12 weight percent of a hardener, 2-6 weight percent of a crosslinking agent, 2-5 weight percent of a coupling agent and 1/2-3 weight percent of a photoinitiator.
Claim 2
Dependent Claim
68 words
A photodefinable dielectric material comprising a triazine mixture which mixture comprises 50-60 weight percent triazine, at least one member of the group consisting of an epoxy acrylate hybrid resin and an acrylated rubber resin in an amount totalling 20-30 weight percent, 5-12 weight percent of a hardener, 2-6 weight percent of a crosslinking agent, 2-5 weight percent of a coupling agent and 1/2-3 weight percent of a photoinitiator.
Claim 3
Dependent Claim
41 words
The mixture as set forth in claim 1, wherein the rubber resin is an acrylonitrile butadiene rubber, the epoxy and acrylate is a hybrid epoxy-acrylate resin which is carboxy or vinyl terminated and the coupling agent is a silane coupling agent.
Claim 4
Dependent Claim
17 words
The mixture recited in claim 2 further including N-vinylpyrrolidone as the hardener, and 2,2-dimethoxy-2-phenylacetophenone as the photoinitiator.
Claim 5
Dependent Claim
16 words
The mixture as recited in claim 3 further including a surfactant and a copper chelate thermostabilizer.
Claim 6
Dependent Claim
34 words
The mixture as recited in claim 1 comprising: triazine--50-60 weight percent; half acrylate of the diglycidyl ether of bisphenol-A--20-30 weight percent; N-vinylpyrrolidone--5-12 weight percent; trimethylolpropanetriacrylate--2-6 weight percent; glycidoxypropyltrimethoxysilane--2-5 weight percent; and 2,2-dimethoxy-2-phenylacetophenone--1-3 weight percent.
Claim 7
Dependent Claim
43 words
The mixture recited in claim 1 comprising: triazine--50-60 weight percent; acrylated acrylonitrile butadiene rubber--10-25 weight percent; half acrylate of the diglycidyl ether of bisphenol-A--5-15 weight percent; N-vinylpyrrolidone--5-12 weight percent; epoxy propylacrylate--1-5 weight percent; trimethylolpropanetriacrylate--2-6 weight percent; glycidoxypropyltrimethoxysilane--2-5 weight percent; and 2,2-dimethoxy-2-phenylacetophenone--1-3 weight percent.
Claim 8
Dependent Claim
48 words
The mixture recited in claim 1 comprising: triazine--50-55 weight percent; acrylated acrylonitrile butadiene rubber--20-30 weight percent; half acrylate of the diglycidyl ether of bisphenol-A--5-15 weight percent; N-vinylpyrrolidone--5-12 weight percent; trimethylolpropanetriacrylate--2-4 weight percent; glycidoxypropyltrimethoxysilane--1-5 weight percent; 2,2-dimethoxy-2-phenylacetophenone--1-3 weight percent; pigment--0.25-1 weight percent; surfactant--0.1-1 weight percent; and stabilizer--0.2-1 weight percent.
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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) | 1989-07-21 | 1990-01-20 | 1990-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-07-21 | 1994-01-20 | 1994-07-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-07-21 | 1998-01-20 | 1998-07-22 | $7700.00 | Window Closed / Lapsed |