Negative working imageable composition containing sulfonic acid
AssigneeKodak Polychrome Graphics LLC
InventorsNeil Haley, John Kalamen
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Abstract
The present invention provides a thermally imageable composition, which includes an acid curable composition, an acid generator, a strong acid and optionally an infrared absorber. The present invention further provides an imageable element, which includes a substrate and a thermally imageable composition according to the present invention coated on a surface of the substrate. Also provided are methods of producing an imaged element according to the present invention.
Claims57
An imageable composition comprising:
- an acid curable composition;
- an acid generator;
- and
- a sulfonic acid represented by the formula R—SO3H, wherein R is a substituted or unsubstituted hydrocarbyl of 1 to 22 carbon atoms, or a substituted or unsubstituted aryl of 6 to 22 carbon atoms.
An imageable element comprising:
- a substrate;
- and
- an imageable composition coated on a surface of said substrate, said composition comprising:
- an acid curable composition;
- an acid generator;
- and a sulfonic acid represented by the formula R—SO3H, wherein R is a substituted or unsubstituted hydrocarbyl of 1 to 22 carbon atoms, or a substituted or unsubstituted aryl of 6 to 22 carbon atoms.
A method of producing an imaged element comprising the steps of:
- providing a thermally imageable element comprising a substrate and a thermally imageable composition coated on a surface of said substrate, said composition comprising an acid curable composition, an acid generator and a sulfonic acid represented by the formula R—SO3H, wherein R is a substituted or unsubstituted hydrocarbyl of 1 to 22 carbon atoms, or a substituted or unsubstituted aryl of 6 to 22 carbon atoms;
- imagewise exposing said imageable element to heat with a hot stylus to produce an imagewise exposed element having exposed and unexposed regions;
- baking said imagewise exposed element at a temperature and period of time sufficient to produce a cured element;
- and
- contacting said cured element and a developer to remove the unexposed regions and thereby produce said imaged element.
A method of producing an imaged element comprising the steps of:
- providing an imageable element comprising a substrate and an imageable composition coated on a surface of said substrate, said composition comprising an acid curable composition, an acid generator, a strong acid, and an infrared absorber or photothermal converter;
- imagewise exposing said imageable element to radiation to produce an imagewise exposed element having exposed and unexposed regions;
- baking said imagewise exposed element at a temperature and period of time sufficient to produce a cured element;
- and
- contacting said cured element and a developer to remove the unexposed regions and thereby produce said imaged element.
An imageable composition comprising:
- an acid curable composition;
- an acid generator;
- a strong acid;
- and
- an infrared absorber or photothermal converter.
An imageable element comprising:
- a substrate;
- and
- an imageable composition coated on a surface of said substrate, said composition comprising:
- an acid curable composition;
- an acid generator;
- a strong acid;
- and an infrared absorber or photothermal converter.
An imageable composition comprising:
- an acid curable composition;
- an acid generator;
- and
- a sulfonic acid having a pKa of not more than about 8.
Dependencies are inferred from the claim text.