EP0115899A2
Expired / Lapsed
EP
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Positive, laminable proofing construction
Assignee: 3M Co
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Filing: 1984-01-03
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Granted: —
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Expires: 2004-01-03
Abstract
Abstract Positive-acting, laminable imaging constructions often suffer from high levels of optical density in background areas. The optical density is provided by migratory colorant or photosensitive diazo oxide. The use of a base soluble organic binder with a substantially polar solvent which contains the colorant and diazo oxide in combination with a thermally softenable polymeric adhesive layer having a substantially non-polar solvent system prevents migration of colorant and diazo oxide between layers and reduces the background optical density.
Inventors
- 👤 Peter M. C/O Minnesota Mining And Koelsch
- 👤 Roger I. C/O Minnesota Mining And Krech
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-28 15:32
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/004; G03F7/022; G03F7/0226; G03F3/00; G03F3/10
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
121 words
A positive-acting, laminable imaging construction comprising: a) a first layer of a base-soluble organic polymeric binder layer having a diazo oxide compound or diazo oxide pendant group on the polymer binder present as at least 15 percent by weight of the binder and sufficient colorant to provide a transmission optical density of at least 1.0, and b) a thermal adhesive layer second layer comprising a thermally softenable polymeric adhesive layer, said first layer having at least a substantially polar solvent system with less than 20 percent by volume of all solvents of a non-polar solvent, and said second layer having at least a substantially non-polar solvent system with less than 20 percent by volume of all solvents of a polar solvent.
Claim 2
Dependent Claim
121 words
A positive-acting, laminable imaging construction comprising: a) a first layer of a base-soluble organic polymeric binder layer having a diazo oxide compound or diazo oxide pendant group on the polymer binder present as at least 15 percent by weight of the binder and sufficient colorant to provide a transmission optical density of at least 1.0, and b) a thermal adhesive layer second layer comprising a thermally softenable polymeric adhesive layer, said first layer having at least a substantially polar solvent system with less than 20 percent by volume of all solvents of a non-polar solvent, and said second layer having at least a substantially non-polar solvent system with less than 20 percent by volume of all solvents of a polar solvent.
Claim 3
Dependent Claim
63 words
The construction of claim 1 wherein the solvent system of said first layer has less than 10 percent by volume of a non-polar solvent and said diazo oxide is selected from the group consisting of a monofunctional diazo oxide having a molecular weight equal to or greater than 400 and a polyfunctional diazo oxide having a molecular weight equal or greater than 350.
Claim 4
Dependent Claim
24 words
The construction of claim 1 wherein the solvent system of said second layer has less than 10 percent by volume of a polar solvent.
Claim 5
Dependent Claim
24 words
The construction of claim 2 wherein the solvent system of said second layer has less than 10 percent by volume of a polar solvent.
Claim 6
Dependent Claim
23 words
The construction of claim 1 wherein the solvent system of said first layer has less than 5 percent by volume of non-polar solvent.
Claim 7
Dependent Claim
22 words
The construction of claim 1 wherein the solvent-system of said second layer has less than 5 percent by volume of polar solvent.
Claim 8
Dependent Claim
23 words
The construction of claim 5 wherein the solvent system of said second layer has less than 5 percent by volume of polar solvent.
Claim 9
Dependent Claim
17 words
The construction of claim 1 wherein a strippable carrier layer is in contact with said first layer.
Claim 10
Dependent Claim
17 words
The construction of claim 4 wherein a strippable carrier layer is in contact with said first layer.
Claim 11
Dependent Claim
17 words
The construction of claim 7 wherein a strippable carrier layer is in contact with said first layer.
Claim 12
Dependent Claim
18 words
The construction of claim 8 wherein the organic polymeric binder of said first layer comprises a phenolic resin.
Claim 13
Dependent Claim
18 words
The construction of claim 9 wherein the organic polymeric binder of said first layer comprises a phenolic resin.
Claim 14
Dependent Claim
18 words
The construction of claim 10 wherein the organic polymeric binder of said first layer comprises a phenolic resin.
Claim 15
Dependent Claim
30 words
The construction of claim 1 wherein the solvent system for said first layer comprises a polar solvent selected from the group consisting of ketone, a halogenated hydrocarbon and an ester.
Claim 16
Dependent Claim
31 words
The construction of claim 12 wherein the solvent system for said first layer comprises a polar solvent selected from the group consisting of a ketone, a halogenated hydrocarbon and an ester.
Claim 17
Dependent Claim
31 words
The construction of claim 13 wherein the solvent system for said first layer comprises a polar solvent selected from the group consisting of a ketone, a halogenated hydrocarbon and an ester.
Claim 18
Dependent Claim
29 words
.17. The construction of claim 14 wherein the solvent system for said second layer comprises a non-polar solvent selected from the group consisting of aromatic hydrocarbons and aliphatic hydrocarbons.
Claim 19
Dependent Claim
28 words
The construction of claim 15 wherein the solvent system for said second layer comprises a non-polar solvent selected from the group consisting of aromatic hydrocarbons and aliphatic hydrocarbons.
Claim 20
Dependent Claim
28 words
The construction of claim 16 wherein the solvent system for said second layer comprises a non-polar solvent selected from the group consisting of aromatic hydrocarbons and aliphatic hydrocarbons.
Claim 21
Dependent Claim
47 words
The construction of claim 15 wherein the thermally softenable polymeric adhesive comprises an organic polymer selected from the group consisting of polyenes and acrylics and the solvent system of said second layer comprises a non-polar solven selected from the group consisting of aromatic hydrocarbons and aliphatic hydrocarbons.
References Cited (Backward Citations)
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