US3787211A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Makeready foil for relief printing
Assignee: BASF SE
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Filing: 1971-12-10
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Granted: 1974-01-22
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Expires: 1991-12-10
Abstract
Abstract The invention relates to a process for the manufacture of a makeready foil for relief printing. A multilayer sheet consisting of a dimensionally stable base which transmits acting light; a non-photopolymerizable intermediate layer which is soluble in solvents and absorbs actinic light; and a photopolymerizable layer which contains a compound capable of absorbing actinic light, is exposed through a negative from the base side and the unexposed portions of the photopolymerizable layer and of the intermediate layer are washed out with a solvent from the photopolymerizable-layer side. The makeready foil of the invention greatly simplifies the makeready process for the printer.
Inventors
- 👤 O Volkert
- 👤 G Schrodt
- 👤 M Zuerger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:19
CPC Classifications
B; B41; B41M; B41M9/00; B41M9/02; B41M9/04
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
27 words
A process as set forth in claim 1, wherein the actinic-light absorbing compound used in layer (b) and layer (c) is an aromatic dinitro or trinitro compound.
Claim 2
Dependent Claim
25 words
A process as set forth in claim 1, wherein the actinic-light-absorbing compound used in layer (b) and layer (c) is an organic-solvent-soluble metal complex dye.
Claim 3
Dependent Claim
23 words
A process as set forth in claim 1, wherein the actinic-light-absorbing compound used in layer (b) and layer (c) is a copper-containing phthalocyanine.
Claim 4
Dependent Claim
25 words
A process as set forth in claim 1, wherein the actinic-light-absorbing compound used in layer (b) and layer (c) is an o-hydroxybenzophenone or a bisphenol.
Claim 5
Dependent Claim
79 words
A process as set forth in claim 1, wherein the photopolymerizable layer (c) contains, apart from the actini-light-absorbing compound, a photocrosslinkable mixture of 10 to 50 percent by weight of monomers containing at least one photopolymerizable double bond and 50 to 90 percent by weight of solid soluble polymers, from 0.01 to 10 percent by weight, based on the photocrosslinkable mixture, of photoinitiators and from 0.01 to 2 percent by weight, based on the photocrosslinkable mixture, of polymerization inhibitors.
Claim 6
Dependent Claim
88 words
A process as set forth in claim 1, wherein the photopolymerizable layer (c) contains, apart from the actini-light-absorbing compound, a photocrosslinkable mixture of 10 to 50 percent by weight of one or more photopolymerizable acrylic acid derivatives and 50 to 90 percent by weight of a copolyamide of hexamethylene diamine adipate, 4,4''-diaminodicyclohexylmethane adipate and epsilon -caprolactam, from 0.5 to 5 percent by weight, based on the photocrosslinkable mixture, of a photoinitiator and from 0.1 to 2 percent by weight, based on the photocrosslinkable mixture, of a polymerization inhibitor.
Claim 7
Dependent Claim
27 words
A process as set forth in claim 1, wherein the intermediate layer (b) consists of the solid soluble polymer used in layer (c) and the actinic-light-absorbing compounds.
Claim 8
Dependent Claim
24 words
A process as set forth in claim 1, wherein the intermediate layer (b) has the same composition as the layer (c) but no photoinitiators.
Claim 9
Dependent Claim
35 words
A process as set forth in claim 1, wherein the base material which transmits actinic light is a polyester, polyvinyl chloride or cellulose acetate sheet having a thickness of from 20 to 250 Mu .
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-01-21 | 1977-07-23 | 1978-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-21 | 1981-07-23 | 1982-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-21 | 1985-07-23 | 1986-01-22 | $7700.00 | Window Closed / Lapsed |