US4621043A
Expired / Lapsed
US
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Storage stable photopolymerizable composition
Assignee: EIDP Inc
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Filing: 1983-01-31
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Granted: 1986-11-04
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Expires: 2003-01-31
Abstract
Abstract A storage stable photopolymerizable composition is disclosed comprising polymeric acid binder with an acid number of at least 45 and a pKa value of at least 5, monomer, photoinitiator and an aldehyde resin precursor.
Inventors
- 👤 Joseph E. Gervay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:28
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/004; G03F7/027; G03F7/032; Y; Y10; Y10S; Y10S430/00; Y10S430/1053; Y10S430/1055; Y10S430/106; Y10S430/111
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
91 words
A storage stable photopolymerizable composition comprising polymeric acid binder, monomer and photoinitiator with said composition containing an aldehyde condensation resin precursor whereby said precursor forms a crosslinkable aldehyde condensation resin in the presence of the acid binder which has an acid number of at least 45 and a pKa value of at least 5 whereby said photopolymerizable composition can be laminated to a support and held for two weeks at 40° C. without any substantial amount of crosslinking, said pKa value measured in a 1:1 volume ratio of methanol to water.
Claim 2
Dependent Claim
91 words
A storage stable photopolymerizable composition comprising polymeric acid binder, monomer and photoinitiator with said composition containing an aldehyde condensation resin precursor whereby said precursor forms a crosslinkable aldehyde condensation resin in the presence of the acid binder which has an acid number of at least 45 and a pKa value of at least 5 whereby said photopolymerizable composition can be laminated to a support and held for two weeks at 40° C. without any substantial amount of crosslinking, said pKa value measured in a 1:1 volume ratio of methanol to water.
Claim 3
Dependent Claim
16 words
The composition of claim 1 wherein the aldehyde resin precursor is a melamine, urea or benzoguanamine.
Claim 4
Dependent Claim
13 words
The composition of claim 1 wherein the acid binder is an acrylate polymer.
Claim 5
Dependent Claim
35 words
The composition of claim 1 which can be laminated to a support below 120° C. and be held for four weeks at 40° C. before being thermally cured to react the acid binder and precursor.
Claim 6
Dependent Claim
18 words
The composition of claim 1 wherein the acid binder comprises at least 25% of the total binder content.
Claim 7
Dependent Claim
10 words
The composition of claim 1 wherein polyvinyl pyrrolidone is present.
Claim 8
Dependent Claim
9 words
The composition of claim 1 wherein polyurethane is present.
Claim 9
Dependent Claim
20 words
The composition of claim 1 wherein the aldehyde resin precursor comprises 3 to 15 percent by weight of the composition.
Claim 10
Dependent Claim
12 words
The composition of claim 1 containing an acrylic acid binder and hexamethoxymethylmelamine.
Claim 11
Dependent Claim
25 words
The composition of claim 1 wherein the acid binder has an acid number of at least 55 and a pKa value of at least 5.5.
Claim 12
Dependent Claim
21 words
The composition of claim 1 wherein the acid binder has an acid number in the range of from 55 to 130.
Claim 13
Dependent Claim
21 words
The composition of claim 1 wherein the acid binder has a pKa value in the range of from 5.5 to 7.5.
Claim 14
Dependent Claim
28 words
The composition of claim 1 wherein the acid binder has an acid number in the range from 60 to 100 and a pKa value of 5.9 to 7.2.
Claim 15
Dependent Claim
11 words
The composition of claim 1 wherein an amphoteric polymer is present.
Claim 16
Dependent Claim
21 words
The composition of claim 1 which can be held for four weeks at 40° C. without any substantial amount of crosslinking.
References Cited (Backward Citations)
US3887450A
Cited
US3887450B1
Cited
US3804735A
Cited
US3989610A
Cited
US4025348A
Cited
US4247621A
Cited
US4273857A
Cited
US4234675A
Cited
US4171977A
Cited
US4284707A
Cited
US4169732A
Cited
US4250248A
Cited
US4239849A
Cited
US4320189A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1989-11-03 | 1990-05-05 | 1990-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-11-03 | 1994-05-05 | 1994-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-11-03 | 1998-05-05 | 1998-11-04 | $7700.00 | Window Closed / Lapsed |