US4760013A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sulfonium salt photoinitiators
Assignee: International Business Machines Corp
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Filing: 1987-02-17
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Granted: 1988-07-26
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Expires: 2007-02-17
Abstract
Abstract Alkyldiarylsulfonium salts of 9, 10,-dithiophenoxyanthracene are useful as photoinitiators in resist compositions, such as epoxy resin formulations, particularly using long wavelength light.
Inventors
- 👤 Nigel P. Hacker
- 👤 Carl E. Larson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:01
CPC Classifications
C; C07; C07C; C07C381/00; C07C381/12; G; G03; G03F; G03F7/00; G03F7/004; G03F7/027; G03F7/028; G03F7/029; C07C2603/00; C07C2603/02; C07C2603/04; C07C2603/22; C07C2603/24; Y; Y10; Y10S; Y10S430/00; Y10S430/1053; Y10S430/1055; Y10S430/114; Y10S430/115; Y10S430/122
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
4 words
Alkyldiarylsulfonium salts of 9,10-dithiophenoxyanthracene.
Claim 2
Dependent Claim
4 words
Alkyldiarylsulfonium salts of 9,10-dithiophenoxyanthracene.
Claim 3
Dependent Claim
2 words
Ethylphenyl-(9-thiophenoxyanthracenyl-10)sulfonium hexafluoroantimonate.
Claim 4
Dependent Claim
2 words
Ethylphenyl-(9-thiophenoxyanthracenyl-10)sulfonium hexafluoroantimonate.
Claim 5
Dependent Claim
2 words
Ethylphenyl-(9-thiophenoxyanthracenyl-10)sulfonium tetrafluoroborate.
Claim 6
Dependent Claim
2 words
Ethylphenyl-(9-thiophenoxyanthracenyl-10)sulfonium tetrafluoroborate.
Claim 7
Dependent Claim
2 words
Methylphenyl-(9-thiophenoxyanthracenyl-10)sulfonium hexafluoroantimonate.
Claim 8
Dependent Claim
2 words
Methylphenyl-(9-thiophenoxyanthracenyl-10)sulfonium hexafluoroantimonate.
Claim 9
Dependent Claim
2 words
Methylphenyl-(9-thiophenoxyanthracenyl-10)sulfonium tetrafluoroborate.
Claim 10
Dependent Claim
2 words
Methylphenyl-(9-thiophenoxyanthracenyl-10)sulfonium tetrafluoroborate.
Claim 11
Dependent Claim
26 words
A resist composition comprising an organic resin and of a photoinitiator which is a compound claimed in claim 1 in an amount effective for ultraviolet curing.
Claim 12
Dependent Claim
15 words
A resist composition as claimed in claim 6 wherein the resin is an epoxy resin.
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) | 1991-07-26 | 1992-01-25 | 1992-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-07-26 | 1996-01-25 | 1996-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-07-26 | 2000-01-25 | 2000-07-26 | $7700.00 | Window Closed / Lapsed |