US4428807A
Expired / Lapsed
US
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Composition containing polymerizable entities having oxirane groups and terminal olefinic unsaturation in combination with free-radical and cationic photopolymerizations means
Assignee: Dow Chemical Co
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Filing: 1978-06-30
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Granted: 1984-01-31
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Expires: 1998-06-30
Abstract
Abstract Photocurable resin compositions result from a mixture of polymerizable entities containing both terminal olefinic unsaturation and oxirane groups and a bifunctional curing system capable of initiating free radical and cationic polymerization.
Inventors
- 👤 George A. Lee
- 👤 Richard A. Hickner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 04:40
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/004; G03F7/027; G03F7/028; G03F7/029; C; C08; C08F; C08F299/00; C08F299/02; C08F299/026; C08F299/028; G03F7/038; G03F7/0388; Y; Y10; Y10S; Y10S430/00; Y10S430/1053; Y10S430/1055; Y10S430/114; Y10S430/117
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
68 words
A photocurable resin composition comprising (A) a partially esterified epoxyester of a terminally unsaturated monocarboxylic acid and a polyepoxide, (B) a curing system consisting essentially of (1) a free radical photoinitiator and (2) a radiation sensitive aromatic onium salt of an element of Group Va or VIIa, said onium salt capable of inducing the cure of (A) by releasing a Lewis acid catalyst when exposed to radiant energy.
Claim 2
Dependent Claim
68 words
A photocurable resin composition comprising (A) a partially esterified epoxyester of a terminally unsaturated monocarboxylic acid and a polyepoxide, (B) a curing system consisting essentially of (1) a free radical photoinitiator and (2) a radiation sensitive aromatic onium salt of an element of Group Va or VIIa, said onium salt capable of inducing the cure of (A) by releasing a Lewis acid catalyst when exposed to radiant energy.
Claim 3
Dependent Claim
27 words
The resin composition of claim 1 wherein said epoxyester is a polyepoxide having from 10 to 90 percent of its oxirane groups esterified with said monocarboxylic acid.
Claim 4
Dependent Claim
20 words
The resin composition of claim 1 wherein said epoxyester is the reaction product of a diglycidyl ether and acrylic acid.
Claim 5
Dependent Claim
18 words
The resin composition of claim 3 wherein said diglycidyl ether is a digylcidyl ether of a polyhydric phenol.
Claim 6
Dependent Claim
13 words
The resin composition of claim 4 wherein said polyhydric phenol is bisphenol A.
Claim 7
Dependent Claim
26 words
The resin composition of claim 1 wherein said epoxyester is the reaction product of a diglycidyl ether and a hydroxyalkyl acrylate ester of a dicarboxylic acid.
Claim 8
Dependent Claim
12 words
The resin composition of claim 1 wherein said curing system is p-tertiarybutyl-α,α,α-trichloroacetophenone.
References Cited (Backward Citations)
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US4010088A
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US4026705A
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Cited
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Cited
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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) | 1987-01-30 | 1987-08-01 | 1988-01-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-01-30 | 1991-08-01 | 1992-01-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-01-30 | 1995-08-01 | 1996-01-31 | $7700.00 | Window Closed / Lapsed |