Patent US4173476A successfully refreshed from Google Patents.
US4173476A
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Complex salt photoinitiator
Assignee: 3M Co
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Filing: 1978-02-08
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Granted: 1979-11-06
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Expires: 1998-02-08
Abstract
Abstract A triarylsulfonium complex salt is described which has particular utility as a photoinitiator for the polymerization of epoxide monomers in thick films or coatings. Photopolymerizable compositions are also described.
Inventors
- 👤 George H. Smith
- 👤 Peter M. Olofson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:31
CPC Classifications
C; C07; C07C; C07C381/00; C07C381/12; C07F; C07F9/00; C07F9/90; C07F9/902; C08; C08G; C08G59/00; C08G59/18; C08G59/68; C08G59/687; C08G65/00; C08G65/02; C08G65/04; C08G65/06; C08G65/08; C08G65/10; C08G65/105; G; G03; G03F; G03F7/00; G03F7/004; G03F7/027; G03F7/028; G03F7/029
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
35 words
A triarylsulfonium complex salt of the formula: ##STR10## where X is F or OH; R 1 , R 2 , R 3 and R 4 are each selected from H, lower alkyl, alkoxy, or halogen.
Claim 2
Dependent Claim
35 words
A triarylsulfonium complex salt of the formula: ##STR10## where X is F or OH; R 1 , R 2 , R 3 and R 4 are each selected from H, lower alkyl, alkoxy, or halogen.
Claim 3
Dependent Claim
30 words
A complex salt in accordance with claim 1, wherein X is F and R 1 , R 2 , R 3 and R 4 are H, lower alkyl or halogen.
Claim 4
Dependent Claim
22 words
A complex salt in accordance with claim 2, where R 1 , R 2 , R 3 and R 4 are H.
Claim 5
Dependent Claim
26 words
A complex salt in accordance with claim 2, wherein R 1 , R 2 , R 3 and R 4 are selected from H and halogen.
Claim 6
Dependent Claim
50 words
A photopolymerizable composition comprising (a) organic material having epoxide functionality, and (b) an effective amount of a complex salt of the formula: ##STR11## where X is F or OH; R 1 ; R 2 , R 3 and R 4 are each selected from H, lower alkyl, alkoxy, or halogen.
Claim 7
Dependent Claim
50 words
A photopolymerizable composition comprising (a) organic material having epoxide functionality, and (b) an effective amount of a complex salt of the formula: ##STR11## where X is F or OH; R 1 ; R 2 , R 3 and R 4 are each selected from H, lower alkyl, alkoxy, or halogen.
Claim 8
Dependent Claim
19 words
A composition in accordance with claim 5, wherein said organic material is selected from cycloaliphatic epoxides and aromatic diglycidylethers.
Claim 9
Dependent Claim
15 words
A composition in accordance with claim 6, wherein said salt is of the formula: ##STR12##
Claim 10
Dependent Claim
12 words
A composition in accordance with claim 5, further comprising hydroxyl-containing organic material.
Claim 11
Dependent Claim
6 words
A photopolymerized composition of claim 5.
Claim 12
Independent Claim
88 words
A method for hardening polymerizable compositions comprising the steps of: (a) providing a photopolymerizable composition comprising (i) organic material having epoxide functionality; and (ii) an effective amount of a complex salt of the formula ##STR13## where X is F or OH; R 1 , R 2 , R 3 and R 4 are each selected from H, lower alkyl, alkoxy, or halogen; (b) disposing said composition on a substrate; (c) exposing said composition to actinic radiation at an intensity and for a time sufficient to harden said composition.
Claim 13
Independent Claim
88 words
A method for hardening polymerizable compositions comprising the steps of: (a) providing a photopolymerizable composition comprising (i) organic material having epoxide functionality; and (ii) an effective amount of a complex salt of the formula ##STR13## where X is F or OH; R 1 , R 2 , R 3 and R 4 are each selected from H, lower alkyl, alkoxy, or halogen; (b) disposing said composition on a substrate; (c) exposing said composition to actinic radiation at an intensity and for a time sufficient to harden said composition.
Claim 14
Dependent Claim
27 words
A method in accordance with claim 10, wherein said composition is at a temperature greater than ambient at the time said composition is exposed to said radiation.
Claim 15
Dependent Claim
26 words
A method in accordance with claim 10, wherein said composition is heated to a temperature greater than ambient by means of said exposure to said radiation.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-11-05 | 1983-05-07 | 1983-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-11-05 | 1987-05-07 | 1987-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-11-05 | 1991-05-07 | 1991-11-06 | $7700.00 | Window Closed / Lapsed |