US3876519A
Expired / Lapsed
US
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Process for photopolymerizing 'ethylenically unsaturated pigmented vehicles using a thioxanthone-halogenated naphthalene sensitizer system'mcginniss; vincent daniel
Assignee: SCM Corp
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Filing: 1973-05-04
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Granted: 1975-04-08
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Expires: 1993-05-04
Abstract
Abstract Ultraviolet polymerization of pigmented photopolymerizable binders or vehicles is improved by incorporating thereinto a sensitizer composition comprising a thioxanthone and an activated halogenated naphthalene compound.
Inventors
- 👤 Vincent Daniel Mcginniss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 06:29
CPC Classifications
C; C08; C08F; C08F2/00; C08F2/46; C08F2/48; C08F2/50; C08K; C08K3/00; C08K5/00; C08K5/02; C08K5/03; C08K5/36; C08K5/41; C08K5/42; C08K5/45; Y; Y10; Y10S; Y10S525/00; Y10S525/922
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
63 words
A PROCESS FOR PHOTOPOLYMERIZING A POLYMERIZABLE VEHICLE SELECTED FROM ETHYLENICALLY UNSATURATED MONOMERS, OLIGOMERS, PREPOLYMERS, OR MIXTURES THEREOF, BY EXPOSURE TO ULTRAVIOLET RADIATION, SAID VEHICLE HAVING DISPERSED THEREIN AN OPACIFYING PIGMENT IN THE AMOUNT OF ABOUT 0.2 TO 0.9 PARTS TO 1.0 PART VEHICLE, WHICH COMPRISES INCORPORATING INTO SAID VEHICLE AN ULTRAVIOLET SENSITIZER PROPORTION CONSISTING ESSENTIALLY OF (1) A THIOXANTHONE COMPOUND OF THE FORMULA:
Claim 2
Dependent Claim
63 words
A PROCESS FOR PHOTOPOLYMERIZING A POLYMERIZABLE VEHICLE SELECTED FROM ETHYLENICALLY UNSATURATED MONOMERS, OLIGOMERS, PREPOLYMERS, OR MIXTURES THEREOF, BY EXPOSURE TO ULTRAVIOLET RADIATION, SAID VEHICLE HAVING DISPERSED THEREIN AN OPACIFYING PIGMENT IN THE AMOUNT OF ABOUT 0.2 TO 0.9 PARTS TO 1.0 PART VEHICLE, WHICH COMPRISES INCORPORATING INTO SAID VEHICLE AN ULTRAVIOLET SENSITIZER PROPORTION CONSISTING ESSENTIALLY OF (1) A THIOXANTHONE COMPOUND OF THE FORMULA:
Claim 3
Dependent Claim
33 words
The process of claim 1 wherein said activated halogenated naphthalene compound is selected from the group consisting of naphthalene sulfonyl chloride, naphthalene disulfonyl chloride, alpha-halo methyl naphthalene, alpha-halo ethyl naphthalene, --and mixtures thereof.
Claim 4
Dependent Claim
21 words
The process of claim 1 wherein the opacifying pigment is selected from titanium dioxide, zinc oxide, ferric oxide and organo-metallic pigments.
Claim 5
Dependent Claim
19 words
The process of claim 1 wherein said halo-substituted thioxanthone is selected from the group consisting of 2-chlorothioxanthone, 2,6-dichlorothioxanthone, 2,6-dibromothioxanthone.
Claim 6
Dependent Claim
19 words
The process of claim 1 wherein said alkyl-substituted thioxanthone is selected from the group consisting of 2-methylthioxanthone, 2,4-dimethylthioxanthone, 2-ethylthioxanthone.
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) | 1978-04-07 | 1978-10-07 | 1979-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-07 | 1982-10-07 | 1983-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-07 | 1986-10-07 | 1987-04-08 | $7700.00 | Window Closed / Lapsed |