Patent US3840448A successfully refreshed from Google Patents.
US3840448A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Surface curing of acrylyl or methacrylyl compounds using radiation of 2,537 angstroms
Assignee: Union Carbide Corp
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Filing: 1972-06-26
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Granted: 1974-10-08
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Expires: 1992-06-26
Abstract
Abstract 1. A PROCESS FOR PREFERENTIALLY AND RAPIDLY POLYMERIZING OR CURING OR CROSSLINKING THE EXTERIOR SURFACE OF A FILM LAYER ON A MOVING SUBSTRATE OF A PHOTOCURABLE MONOMER OR POLYMER COMPOSITION CONTAINING AT LEAST ONE POLYMERIZABLE ACRYLYL OR METHACRYLYL GROUP WHICH COMPRISES EXPOSING SAID PHOTOCURABLE COMPOSITIONS UNDER AN INERT GAS ATMOSPHERE TO A LOW PRESSURE MERCURY SHORT WAVE ULTRAVIOLET RADIATION SOURCE, AT LEAST 75% OF THE RADIATED POWER BEING AT A WAVELENGTH OF 2,537 ANGSTROM UNITS WHEREBY THE EXTERIOR SURFACE OF THE FILM IS PREFERENTIALLY POLYMERIZED OR CURED OR CROSSLINKED.
Inventors
- 👤 C Osborn
- 👤 H Troue
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 17:01
CPC Classifications
B; B05; B05D; B05D3/00; B05D3/06; C; C08; C08F; C08F2/00; C08F2/46; Y; Y10; Y10S; Y10S522/00; Y10S522/913
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
A PROCESS FOR PREFERENTIALLY AND RAPIDLY POLYMERIZING OR CURING OR CROSSLINKING THE EXTERIOR SURFACE OF A FILM LAYER ON A MOVING SUBSTRATE OF A PHOTOCURABLE MONOMER OR POLYMER COMPOSITION CONTAINING AT LEAST ONE POLYMERIZABLE ACRYLYL OR METHACRYLYL GROUP WHICH COMPRISES EXPOSING SAID PHOTOCURABLE COMPOSITIONS UNDER AN INERT GAS ATMOSPHERE TO A LOW PRESSURE MERCURY SHORT WAVE ULTRAVIOLET RADIATION SOURCE, AT LEAST 75% OF THE RADIATED POWER BEING AT A WAVELENGTH OF 2,537 ANGSTROM UNITS WHEREBY THE EXTERIOR SURFACE OF THE FILM IS PREFERENTIALLY POLYMERIZED OR CURED OR CROSSLINKED.
Claim 2
Dependent Claim
88 words
A PROCESS FOR PREFERENTIALLY AND RAPIDLY POLYMERIZING OR CURING OR CROSSLINKING THE EXTERIOR SURFACE OF A FILM LAYER ON A MOVING SUBSTRATE OF A PHOTOCURABLE MONOMER OR POLYMER COMPOSITION CONTAINING AT LEAST ONE POLYMERIZABLE ACRYLYL OR METHACRYLYL GROUP WHICH COMPRISES EXPOSING SAID PHOTOCURABLE COMPOSITIONS UNDER AN INERT GAS ATMOSPHERE TO A LOW PRESSURE MERCURY SHORT WAVE ULTRAVIOLET RADIATION SOURCE, AT LEAST 75% OF THE RADIATED POWER BEING AT A WAVELENGTH OF 2,537 ANGSTROM UNITS WHEREBY THE EXTERIOR SURFACE OF THE FILM IS PREFERENTIALLY POLYMERIZED OR CURED OR CROSSLINKED.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-10-07 | 1978-04-08 | 1978-10-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-07 | 1982-04-08 | 1982-10-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-07 | 1986-04-08 | 1986-10-08 | $7700.00 | Window Closed / Lapsed |