Claims
- 1. A monosheet black and white substantially light-insensitive thermographic recording material comprising a thermosensitive element and a support, said thermosensitive element containing a substantially light-insensitive organic silver salt, an organic reducing agent therefor in thermal working relationship therewith and a binder, wherein said thermographic recording material comprises a reaction product of an amino-group containing polymer and a compound according to formula (I):
- 2. Thermographic recording material according to claim 1, wherein said compound according to formula (I) is represented by formula (II):
- 3. Thermographic recording material according to claim 2, wherein R in formula (II) is an alkyl group with 1 to 6 carbon atoms.
- 4. Thermographic recording material according to claim 1, wherein said compound according to formula (1) is selected from the group consisting of: 1,1-bis-(vinylsulfonyl)methane, 1,2-bis-(vinylsulfonyl)ethane, 1,2-bis-(vinylsulfonyl)propane, 1,3-bis-(vinylsulfonyl)propane, 1,3-bis-(vinylsulfonyl)-2-hydroxy-propane, 3,3-bis-(vinylsulfonyl)-n-propyl-methyl-ether, tetrakis-(vinylsulfonylmethylene)-methane and 1,5-bis-(vinylsulfonyl)-3-oxy-n-pentane.
- 5. Thermographic recording material according to claim 1, wherein said amino-group-containing polymer is selected from the group consisting of gelatine and gelatine derivatives, melamine-formaldehyde resins, melamine-poly(vinyl alcohol) reaction products and urea-formaldehyde resins.
- 6. Thermographic recording material according to claim 1, wherein said reaction product in said thermographic recording material is substantially present in said thermosensitive element.
- 7. Thermographic recording material according to claim 1, wherein said thermosensitive element is provided with a protective layer.
- 8. Thermographic recording material according to claim 7, wherein said reaction product in said thermographic recording material is substantially present in said protective layer.
- 9. A process for coating a support with a thermosensitive element according to claim 1 comprising the steps of: applying a solution or dispersion containing said compound according to formula (I) to a support; and reacting said compound according to formula (I) with an amino-group-containing polymer, said compound according to formula (I) and said amino-group-containing polymer being either in the same layer or in immediately adjacent layers.
- 10. A process for the use of a compound according to formula (I):
- 11. A thermographic imaging process comprising the steps of: providing a monosheet black and white substantially light-insensitive thermographic recording material according to claim 1; and image-wise applying heat to said thermographic recording material under substantially water-free conditions.
Priority Claims (1)
Number |
Date |
Country |
Kind |
00204258.8 |
Nov 2000 |
EP |
|
CROSS-REFERENCE TO RELATED PATENT APPLICATIONS
[0001] The application claims the benefit of U.S. Provisional Application No. 60/257,450 filed Dec. 21, 2000, which is incorporated by reference. In addition, this application claims the benefit of European Application No. 204258.8, filed Nov. 30, 2000, which is also incorporated by reference.
Provisional Applications (1)
|
Number |
Date |
Country |
|
60257450 |
Dec 2000 |
US |