US3779768A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluorocarbon surfactants for vesicular films
Assignee: Xidex Corp
•
Filing: 1971-08-26
•
Granted: 1973-12-18
•
Expires: 1991-08-26
Abstract
Abstract Fluorocarbon surfactants are added to vesicular films to improve the sensitivity thereof, while further maintaining very small vesicle size in the development image which results in films of improved resolution. The fluorocarbon surfactants contain a hydrophobic chain, which terminates in a hydrophilic head portion, which can be any of the types usually employed with hydrocarbon type dispersing agents.
Inventors
- 👤 O Cope
- 👤 S Chaikin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:17
CPC Classifications
G; G03; G03C; G03C5/00; G03C5/60
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
16 words
A vesicular film in accordance with claim 1 wherein said light-sensitive material is a diazo compound.
Claim 2
Dependent Claim
27 words
A vesicular film in accordance with claim 1 wherein the fluorocarbon surfactant is present in an amount of about 0.01-5.0 percent by weight of the polymer vehicle.
Claim 3
Dependent Claim
26 words
A vesicular film in accordance with claim 2 wherein said diazo compound is present in an amount of about 1-10 percent by weight of said vehicle.
Claim 4
Dependent Claim
26 words
A vesicular film in accordance with claim 2 wherein said diazo compound is present in an amount of about 4-6 percent by weight of said vehicle.
Claim 5
Dependent Claim
27 words
A vesicular film in accordance with claim 1 wherein said fluorocarbon surfactant is present in an amount of about 0.05 -2.0 percent by weight of said vehicle.
Claim 6
Dependent Claim
17 words
A vesicular film in accordance with claim 1 wherein the fluorocarbon surfactant is an N-polyoxyethylene substituted perfluorosulfonamide.
Claim 7
Dependent Claim
29 words
A vesicular film in accordance with claim 1 wherein the fluorocarbon surfactant has the formula: C8F17SO2N(C2H4O)nH wherein R is lower alkyl and n is an integer from 2 -30.
Claim 8
Dependent Claim
36 words
A vesicular film in accordance with claim 8 wherein R is ehtyl and the surfactant is capable of reducing the surface tension of water to 25 dynes per cm at 25*C. for 0.001 wt. percent solution.
Claim 9
Dependent Claim
24 words
A vesicular film in accordance with claim 1 wherein said polymeric vehicle is a linear poly (hydroxy ether) of epihalohydrin and a dihydric phenol.
Claim 10
Dependent Claim
17 words
A vesicular film in accordance with claim 10 wherein said fluorocarbon surfactant is an N-polyoxyethylene substituted perfluorosulfonamide.
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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) | 1976-12-17 | 1977-06-18 | 1977-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-12-17 | 1981-06-18 | 1981-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-12-17 | 1985-06-18 | 1985-12-18 | $7700.00 | Window Closed / Lapsed |