Patent US4351893A successfully refreshed from Google Patents.
US4351893A
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Derivatives of aryl ketones as visible sensitizers of photopolymerizable compositions
Assignee: EIDP Inc
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Filing: 1980-12-31
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Granted: 1982-09-28
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Expires: 2000-12-31
Abstract
Abstract Sensitizers for photopolymerizable compositions, the sensitizers being α,β-unsaturated ketones derived from acetyltetrahydronaphthalene or acetylindane and dialkylaminoaryl aldehyde; and the photopolymerizable compositions comprising said sensitizers.
Inventors
- 👤 Albert G. Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 17:42
CPC Classifications
C; C07; C07D; C07D295/00; C07D295/04; C07D295/10; C07D295/112; C07C; C07C45/00; C07C45/45; C07C45/46; C07D215/00; C07D215/02; C07D215/12; C07D455/00; C07D455/03; C07D455/04; G; G03; G03F; G03F7/00; G03F7/004; G03F7/027; G03F7/028; G03F7/031; Y; Y10; Y10S; Y10S430/00; Y10S430/1053; Y10S430/1055; Y10S430/106; Y10S430/111; Y10S430/114; Y10S430/12; Y10S430/121
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
190 words
A photopolymerizable composition comprising the components: (i) at least one nongaseous ethylenically unsaturated compound capable of forming a high molecular weight polymer by photoinitiated addition polymerization; (ii) at least one 2,4,5-triarylimidazolyl dimer initiator consisting of two 2,4,5-triarylimidazolyl radicals bound together by a single covalent bond; and (iii) at least one α,β-unsaturated ketone sensitizer having the formula ##STR11## wherein R 1 and R 2 are each H, or R 1 +R 2 is --CH 2 --; R 3 is H, or R 3 +R 5 is selected from --CH 2 -- 2 , --CH 2 -- 3 , and --CH(CH 3 )CH 2 C(CH 3 ) 2 --; R 4 is H, or R 4 +R 6 is selected from --CH 2 -- 2 and --CH 2 -- 3 ; R 5 and R 6 are alkyl groups of 1 to 5 carbon atoms, or together are selected from --CH 2 -- 4 and --CH 2 CH 2 OCH 2 CH 2 --; R 7 , having a total of up to 8 carbon atoms, is selected from trimethylene and tetramethylene groups, unsubstituted, or substituted with 1 to 4 alkyl groups.
Claim 2
Dependent Claim
190 words
A photopolymerizable composition comprising the components: (i) at least one nongaseous ethylenically unsaturated compound capable of forming a high molecular weight polymer by photoinitiated addition polymerization; (ii) at least one 2,4,5-triarylimidazolyl dimer initiator consisting of two 2,4,5-triarylimidazolyl radicals bound together by a single covalent bond; and (iii) at least one α,β-unsaturated ketone sensitizer having the formula ##STR11## wherein R 1 and R 2 are each H, or R 1 +R 2 is --CH 2 --; R 3 is H, or R 3 +R 5 is selected from --CH 2 -- 2 , --CH 2 -- 3 , and --CH(CH 3 )CH 2 C(CH 3 ) 2 --; R 4 is H, or R 4 +R 6 is selected from --CH 2 -- 2 and --CH 2 -- 3 ; R 5 and R 6 are alkyl groups of 1 to 5 carbon atoms, or together are selected from --CH 2 -- 4 and --CH 2 CH 2 OCH 2 CH 2 --; R 7 , having a total of up to 8 carbon atoms, is selected from trimethylene and tetramethylene groups, unsubstituted, or substituted with 1 to 4 alkyl groups.
Claim 3
Dependent Claim
34 words
A photopolymerizable composition according to claim 1 wherein the components are present in these amounts, by weight: 100 parts of (i), 0.01 to 20 parts of (ii), and 0.001 to 15 parts of (iii).
Claim 4
Dependent Claim
14 words
A photopolymerizable composition according to claim 2 containing 1 to 10 parts of (iii).
Claim 5
Dependent Claim
14 words
A photopolymerizable composition according to claim 1 comprising additionally a polymeric binder component, (iv).
Claim 6
Dependent Claim
28 words
A photopolymerizable composition according to claim 4 wherein the binder is selected from at least one member of the group polyacrylate esters and poly-α-alkylacrylate esters containing carboxyl groups.
Claim 7
Dependent Claim
70 words
A photopolymerizable composition according to claim 4 wherein the components are present in these amounts, by weight: (i) is 3 to 100 parts per 100 parts of (i) plus binder, (ii) is 0.01 to 20 parts per 100 parts of (i) plus binder, (iii) is 0.001 to 15 parts per 100 parts of (i) plus binder, and (iv) is 0 to 97 parts per 100 parts of (i) plus binder.
Claim 8
Dependent Claim
21 words
A photopolymerizable composition according to claim 6 wherein (iii) is 1 to 10 parts per 100 parts of (i) plus binder.
Claim 9
Dependent Claim
9 words
A photopolymer of the composition according to claim 1.
Claim 10
Dependent Claim
9 words
A photopolymer of the composition according to claim 4.
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) | 1985-09-27 | 1986-03-29 | 1986-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-09-27 | 1990-03-29 | 1990-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-09-27 | 1994-03-29 | 1994-09-28 | $7700.00 | Window Closed / Lapsed |