US3970535A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photopolymerization process utilizing a 2-methyl-substituted benzimidazole as a photosensitizer
Assignee: SCM Corp
•
Filing: 1974-06-12
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Granted: 1976-07-20
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Expires: 1994-06-12
Abstract
Abstract U. V. polymerization of a photopolymerizable vehicle is improved by incorporating into the vehicle about 0.5-10% by weight of a 2-methyl substituted benzimidazole.
Inventors
- 👤 Vincent Daniel McGinniss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:07
CPC Classifications
C; C08; C08F; C08F299/00; C08F299/02; C08F299/022; C08F299/024; C08F2/00; C08F2/46; C08F2/48; C08F2/50; C08K; C08K5/00; C08K5/16; C08K5/34; C09; C09D; C09D4/00; Y; Y10; Y10S; Y10S430/00; Y10S430/1053; Y10S430/1055; Y10S430/114; Y10S430/12; Y10S430/121; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31511; Y10T428/31678; Y10T428/31692
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
76 words
In a process for photopolymerizing a polymerizable ethylenically unsaturated vehicle, wherein said vehicle is photosensitized by incorporating thereinto a photosensitizer and exposing the photosensitized vehicle to a source of ultraviolet radiation, the improvement which comprises incorporating as a photosensitizer into said vehicle a substituted 2-methyl benzimidazole compound wherein the substituent is attached to the 2-methyl carbon, said photosensitizer is the amount of about 0.5 to about 10% by weight, based on the weight of the vehicle.
Claim 2
Dependent Claim
76 words
In a process for photopolymerizing a polymerizable ethylenically unsaturated vehicle, wherein said vehicle is photosensitized by incorporating thereinto a photosensitizer and exposing the photosensitized vehicle to a source of ultraviolet radiation, the improvement which comprises incorporating as a photosensitizer into said vehicle a substituted 2-methyl benzimidazole compound wherein the substituent is attached to the 2-methyl carbon, said photosensitizer is the amount of about 0.5 to about 10% by weight, based on the weight of the vehicle.
Claim 3
Dependent Claim
13 words
The process according to claim 1 wherein said substituted benzimidazole is 2-chloromethyl benzimidazole.
Claim 4
Dependent Claim
12 words
The process according to claim 1 wherein said substituted benzimidazole is 2-(trichloromethyl)-benzimidazole.
Claim 5
Dependent Claim
13 words
The process according to claim 1 wherein said substituted benzimidazole is 2(α-hydroxybenzyl benzimidazole.
Claim 6
Dependent Claim
14 words
The process according to claim 1 wherein said substituted benzimidazole is 2(α-hydroxybenzyl)-benzimidazole alkyl ether.
Claim 7
Dependent Claim
12 words
The process according to claim 1 wherein said substituted benzimidazole is 2(chlorobenzyl)-benzimidazole.
Claim 8
Dependent Claim
12 words
The process according to claim 1 wherein said substituted benzimidazole is 2(bromobenzyl)-benzimidazole.
Claim 9
Dependent Claim
12 words
The process according to claim 1 wherein said substituted benzimidazole is 2(α-thiobenZYl)-benzimidazole.
References Cited (Backward Citations)
US2773822A
Cited
US3479185A
Cited
US3597343A
Cited
US3549367A
Cited
US3622334A
Cited
US3645772A
Cited
US3782951A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-07-20 | 1980-01-19 | 1980-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-07-20 | 1984-01-19 | 1984-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-07-20 | 1988-01-19 | 1988-07-20 | $7700.00 | Window Closed / Lapsed |