Tonable radiation sensitive recording material with balanced adhesive properties and process for using the same

A tonable, radiation sensitive composition, whose adhesion properties can be controlled by the presence of a polydiorganosiloxane with polar and/or ethylenic unsaturated groups and a process for preparing multicolored images using such a composition is described.

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What is claimed is:

1. A tonable, radiation sensitive recording material comprising:

a) a support;

b) a tonable, radiation sensitive layer which adheres to the support; and

c) a coversheet which adheres to the tonable, radiation-sensitive layer and wherein the support has greater adhesion to the tonable, radiation-sensitive layer than the cover layer;

wherein said tonable, radiation sensitive layer further comprises i) at least one compound which after exposure to actinic radiation causes a change in the tackiness of the composition; ii) a photoinitiator; iii) a polymeric binder; and iv) apolydiorganosiloxane with polar and/or ethylenic unsaturated groups wherein said polydiorganosiloxane at least partially controls the adhesion balance of the tonable, radiation-sensitive layer to the support and the coversheet and is present in 0.05 to0.7% by weight relative to the weight of the tonable, radiation-sensitive layer and excluding polydimethylsiloxane.

2. A process for the formation of images comprising:

a) laminating to a receptor after removing the coversheet the tonable, radiation sensitive recording material of claim 1;

b) imagewise exposing through the support the tonable, radiation sensitive layer;

c) peeling off the support; and

d) applying a toning material to the tacky areas of the exposed layer.

3. A process for the formation of multicolored images comprising:

a) laminating to a receptor after removing the coversheet the tonable, radiation sensitive recording material of claim 1;

b) imagewise exposing through the support the tonable, radiation sensitive layer;

c) peeling off the support;

d) applying a toning material to the tacky areas of the exposed layer; and

e) repeating steps a) through d) one or more times, whereby in step a) a new layer of tonable, radiation sensitive recording material is laminated to the previously formed radiation sensitive layer, which had been processed according to steps a)through d) to produce a one-color image.

4. The process of claim 2 or 3, wherein the support is removed prior to imagewise exposure.

5. The tonable, radiation sensitive recording material of claim 1 wherein said radiation sensitive layer is a positive working tonable layer.

6. The tonable, radiation sensitive recording material of claim 1, wherein said polydiorganosiloxane contains alkyl groups with 1 to 5 carbon atoms and/or phenyl groups.

7. The tonable, radiation sensitive recording material of claim 1, wherein said polydiorganosiloxane contains a polar group selected from the group consisting of hydroxy, alkoxy, and carboxy.

8. The tonable, radiation sensitive recording material of claim 7, wherein said polydiorganosiloxane contains at least 10 siloxane units.

9. The tonable, radiation sensitive recording material of claim 1, wherein said polydiorganosiloxane is a polydiorganosiloxane/polyester copolymer.

10. The tonable, radiation sensitive recording material of claim 9, wherein said polydiorganosiloxane/polyester copolymer contains at least 10 siloxane units.