Patent US4590145A successfully refreshed from Google Patents.
US4590145A
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Photopolymerization initiator comprised of thioxanthones and oxime esters
Assignee: Daicel Corp
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Filing: 1985-06-28
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Granted: 1986-05-20
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Expires: 2005-06-28
Abstract
Abstract The initiator composition is effectively used for a photopolymerizable resin composition which comprises a photopolymerizable compound having a double bond for polymerization and a polymer binder and comprises (A) thioxanthone or a substituted thioxanthone and (B) an oxime ester of the formula: ##STR1## wherein R 1 and R 2 may be the same or different and represent each an alkyl group having 1 to 10 carbon atoms, a substituted or unsubstituted phenyl, naphthyl, anthryl, pyridyl or quinolyl group or R 1 and R 2 may be bonded together to form a ring, and R 3 represents an alkyl group having 1 to 5 carbon atoms or a substituted or unsubstituted aryl group.
Inventors
- 👤 Masanori Itoh
- 👤 Fumio Takenaka
- 👤 Kouzi Tohya
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:04
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; Y10S430/12; Y10S430/122; Y10S430/123; Y10S502/00; Y10S502/522
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
112 words
An initiator composition for photopolymerization which comprises: (A) thioxanthone or a derivative thereof of the formula: ##STR5## in which Ar 1 and Ar 2 each are an aromatic ring or a substituted aromatic ring, and (B) an oxime ester of the formula: ##STR6## wherein R 1 and R 2 may be the same or different and represent each an alkyl group having 1 to 10 carbon atoms, a substituted or unsubstituted phenyl, naphthyl, anthryl, pyridyl or quinolyl group or R 1 and R 2 may be bonded together to form a ring, and R 3 represents an alkyl group having 1 to 5 carbon atoms or a substituted or unsubstituted aryl group.
Claim 2
Dependent Claim
112 words
An initiator composition for photopolymerization which comprises: (A) thioxanthone or a derivative thereof of the formula: ##STR5## in which Ar 1 and Ar 2 each are an aromatic ring or a substituted aromatic ring, and (B) an oxime ester of the formula: ##STR6## wherein R 1 and R 2 may be the same or different and represent each an alkyl group having 1 to 10 carbon atoms, a substituted or unsubstituted phenyl, naphthyl, anthryl, pyridyl or quinolyl group or R 1 and R 2 may be bonded together to form a ring, and R 3 represents an alkyl group having 1 to 5 carbon atoms or a substituted or unsubstituted aryl group.
Claim 3
Dependent Claim
23 words
An initiator composition as claimed in claim 1, which comprises the compounds (A) and (B) at a weight ratio of 1:100 to 10:1.
Claim 4
Dependent Claim
48 words
A photopolymerizable resin composition which comprises 5 to 80 percent by weight of a photopolymerizable compound having a double bond for polymerization, 0.01 to 20 percent by weight of the two initiators (A) and (B) as each defined in claim 1 and the balance is a polymer binder.
References Cited (Backward Citations)
US3558309A
Cited
US3827957A
Cited
US3876519A
Cited
US3857769A
Cited
US3926643A
Cited
US4417023A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-05-19 | 1989-11-18 | 1990-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-05-19 | 1993-11-18 | 1994-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-05-19 | 1997-11-18 | 1998-05-20 | $7700.00 | Window Closed / Lapsed |