US4585726A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photopolymerizable water-soluble or water-dispersible mixture containing a salt of nitrous acid
Assignee: BASF SE
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Filing: 1984-07-06
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Granted: 1986-04-29
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Expires: 2004-07-06
Abstract
Abstract Photopolymerizable water-soluble or water-dispersible mixtures essentially consist of a base polymer, at least one polymerizable ethylenically unsaturated compound, at least one photoinitiator and/or photosensitizer and at least one stabilizer, the thermal polymerization inhibitor being a water-soluble salt of nitrous acid.
Inventors
- 👤 Gunter Wallbillich
- 👤 Rudolf Vyvial
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:27
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/004; G03F7/027; C; C08; C08K; C08K3/00; C08K3/28; Y; Y10; Y10S; Y10S430/00; Y10S430/1053; Y10S430/1055; Y10S430/114; Y10S430/118; Y10S430/12
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
69 words
A photopolymerizable water-soluble or water-dispersible mixture which consists essentially of a polymer, at least one low molecular weight photopolymerizable unsaturated compound containing one or more acrylyl or methacrylyl groups, at least one compound selected from the group consisting of photoinitiators and photosensitizers, and as a thermal polymerization inhibitor, from 0.001 to 1% by weight, based on the amount of anhydrous photopolymerizable mixture, of a water-soluble salt of nitrous acid.
Claim 2
Dependent Claim
69 words
A photopolymerizable water-soluble or water-dispersible mixture which consists essentially of a polymer, at least one low molecular weight photopolymerizable unsaturated compound containing one or more acrylyl or methacrylyl groups, at least one compound selected from the group consisting of photoinitiators and photosensitizers, and as a thermal polymerization inhibitor, from 0.001 to 1% by weight, based on the amount of anhydrous photopolymerizable mixture, of a water-soluble salt of nitrous acid.
Claim 3
Dependent Claim
26 words
A photopolymerizable water-soluble or water-dispersible mixture as defined in claim 1, which contains from 0.01 to 0.2% by weight of a water-soluble salt of nitrous acid.
Claim 4
Dependent Claim
43 words
A photopolymerizable water-soluble or water-dispersible mixture as defined in claim 1, which contains, as a stabilizer, in addition to a water-soluble salt of nitrous acid, one or more compounds selected from the group consisting of hydroquinone, its derivatives, phenol compounds and N-nitroso compounds.
Claim 5
Dependent Claim
25 words
A photopolymerizable water-soluble or water dispersible mixture as defined in claim 1 wherein the water-soluble salt of nitrous acid is sodium nitrite or potassium nitrite.
Claim 6
Dependent Claim
21 words
A photopolymerizable water-soluble or water-dispersible mixture as defined in claim 1 wherein the low molecular weight photopolymerizable compound is β-hydroxyethyl methacrylate.
References Cited (Backward Citations)
GB786119A
Cited
GB834337A
Cited
GB835849A
Cited
US3082262A
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US3418300A
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GB1233883A
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GB1251475A
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GB1416440A
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US4239849A
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US4278752A
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US4340686A
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US4434223A
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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) | 1989-04-28 | 1989-10-28 | 1990-04-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-04-28 | 1993-10-28 | 1994-04-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1997-04-28 | 1997-10-28 | 1998-04-29 | $7700.00 | Window Closed / Lapsed |