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Patent US5100928A successfully refreshed from Google Patents.
US5100928A
Expired / Lapsed
US
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Compositions containing organic-soluble xanthene dye photoinitiators
Assignee: Olin Corp
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Filing: 1990-04-18
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Granted: 1992-03-31
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Expires: 2010-04-18
Abstract
Abstract Described herein are photopolymerizable compositions comprising at least one polymerizable ethylenically unsaturated compound, and an initiating combination of an organic soluble xanthene dye compound and an organic activator compound. These compositions are useful as radiation-curable coatings, photocurable films, and photoactive films.
Inventors
- 👤 Paul V. Grosso
- 👤 Willard F. Burt
- 👤 Guilford Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 19:44
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/004; G03F7/027; G03F7/028; G03F7/031; C; C08; C08F; C08F2/00; C08F2/46; C08F2/48; C08F2/50; Y; Y10; Y10S; Y10S430/00; Y10S430/1053; Y10S430/1055; Y10S430/114; Y10S430/116; Y10S430/117
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
98 words
A photopolymerizable composition comprising (A) at least one addition-polymerizable, ethylenically unsaturated compound having at least one terminal ethylene group and being capable of forming a high polymer by photoinitiated addition polymerization; and (B) an addition polymerization-initiating combination of (1) an organic-soluble, substantially water-insoluble, radiation-sensitive xanthene dye compound that absorbs actinic radiation and is raised to an active state and (2) a substantially water-insoluble organic activator compound that produces free radicals by interaction with said active state of said radiation-sensitive dye, wherein the dye is a salt or ester of eosin, and wherein the activator is a trichloromethyl-substituted triazine.
Claim 2
Dependent Claim
98 words
A photopolymerizable composition comprising (A) at least one addition-polymerizable, ethylenically unsaturated compound having at least one terminal ethylene group and being capable of forming a high polymer by photoinitiated addition polymerization; and (B) an addition polymerization-initiating combination of (1) an organic-soluble, substantially water-insoluble, radiation-sensitive xanthene dye compound that absorbs actinic radiation and is raised to an active state and (2) a substantially water-insoluble organic activator compound that produces free radicals by interaction with said active state of said radiation-sensitive dye, wherein the dye is a salt or ester of eosin, and wherein the activator is a trichloromethyl-substituted triazine.
Claim 3
Dependent Claim
55 words
A composition as defined in claim 1, wherein the ethylenically unsaturated compound is selected from the group consisting of ethylenically unsaturated acid esters of polyhydric alcohols, acrylate prepolymers derived from the partial reaction of pentaerythritol with acrylic or methacrylic acid or their acid esters, isocyanate-modified acrylates, and methacrylate and itaconic acid esters of polyhydric alcohols.
Claim 4
Dependent Claim
15 words
A composition as defined in claim 1, wherein the ethylenically unsaturated compound is an acrylate.
Claim 5
Dependent Claim
13 words
A composition as defined in claim 3, wherein the acrylate is a diacrylate.
Claim 6
Dependent Claim
13 words
A composition as defined in claim 3, wherein the acrylate is a triacrylate.
Claim 7
Dependent Claim
16 words
A composition as defined in claim 1, wherein the dye is ethyl eosin tetraethyl ammonium salt.
Claim 8
Dependent Claim
13 words
A composition as defined in claim 1, wherein the dye is methyl eosin.
Claim 9
Dependent Claim
12 words
A composition as defined in claim 1, wherein the triazine is 2,4,6-tris(trichloromethyl)-1,3,5-triazine.
References Cited (Backward Citations)
US4251619A
Cited
US4552830A
Cited
US4551407A
Cited
US4632899A
Cited
US4554235A
Cited
US4766055A
Cited
US4801392A
Cited
US4751102A
Cited
US4985341A
Cited
US4869981A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-03-31 | 1995-09-30 | 1996-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-03-31 | 1999-09-30 | 2000-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-03-31 | 2003-09-30 | 2004-03-31 | $7700.00 | Window Closed / Lapsed |