US3857769A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photopolymerizable coating compositions and process for making same which contains a thioxanthone and an activated halogenated azine compound as sensitizers
Assignee: SCM Corp
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Filing: 1973-11-08
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Granted: 1974-12-31
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Expires: 1993-11-08
Abstract
Abstract Ultraviolet polymerization of photopolymerizable binders or vehicles is improved by incorporating thereinto a sensitizer composition comprising a thioxanthone and an activated halogenated azine compound.
Inventors
- 👤 V Mcginniss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:06
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/004; G03F7/027; G03F7/028; G03F7/031; C; C08; C08F; C08F2/00; C08F2/46
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
55 words
A PROCESS FOR POLYMERIZING AN ETHYLENICALLY UNSATURATED POLYMERIZABLE VEHICLE IN WHICH A PIGMENT IS DISPERSED IN A PIGMENT-TO-VEHICLE RATIO OF 1:10 TO 1:1 TO FORM A PIGMENTED COMPOSITION BY EXPOSURE TO ULTRAVOILET RADIATION, WHICH COMPRISES INCORPORATING INTO SAID VEHICLE AN ULTRAVOILET SENSITIZER PROPORTION CONSISTINF ESSENTIALLY OF (A) A THIOXANTHONE COMPOUND AS REPRESENTED BY THE FORMULA:
Claim 2
Dependent Claim
55 words
A PROCESS FOR POLYMERIZING AN ETHYLENICALLY UNSATURATED POLYMERIZABLE VEHICLE IN WHICH A PIGMENT IS DISPERSED IN A PIGMENT-TO-VEHICLE RATIO OF 1:10 TO 1:1 TO FORM A PIGMENTED COMPOSITION BY EXPOSURE TO ULTRAVOILET RADIATION, WHICH COMPRISES INCORPORATING INTO SAID VEHICLE AN ULTRAVOILET SENSITIZER PROPORTION CONSISTINF ESSENTIALLY OF (A) A THIOXANTHONE COMPOUND AS REPRESENTED BY THE FORMULA:
Claim 3
Dependent Claim
26 words
The process of claim 1 wherein said thioxanthone is selected from the group consisting of halo-substItuted thioxanthone, alkyl-substituted thioxanthone, amino-substituted thioxanthone, hydroxy-substituted thioxanthone, and mixtures thereof.
Claim 4
Dependent Claim
21 words
The process of claim 2 wherein said halo-substituted thioxanthone is selected from the group consisting of 2-chlorothioxanthone, 2-bromothioxanthone, 2,6-dichlorothioxanthone, and 2,6-dibromothioxanthone.
Claim 5
Dependent Claim
20 words
The process of claim 2 wherein said alkyl-substituted thioxanthone is selected from the group consisting of 2-methylthioxanthone, 2,4-dimethylthioxanthone, and 2-ethylthioxanthone.
Claim 6
Dependent Claim
26 words
The process of claim 1 wherein said activated halogenated benzazine is selected from the group consisting of Alpha -chloroalkylated benzazines, Alpha -bromoalkylated benzazines, and chlorosulfonated benzazines.
Claim 7
Dependent Claim
26 words
The process of claim 1 wherein said activated halogenated benzodiazine is selected from the group consisting of Alpha -chloroalkylated benzodiazines, Alpha -bromoalkylated benzodiazines and chlorosulfonated benzodiazines.
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) | 1977-12-30 | 1978-07-01 | 1978-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-30 | 1982-07-01 | 1982-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-30 | 1986-07-01 | 1986-12-31 | $7700.00 | Window Closed / Lapsed |