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US 6,582,882 B2Granted
Imageable element comprising graft polymer
AssigneeKodak Polychrome Graphics LLC
InventorsS. Peter Pappas, Shashikant Saraiya
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Abstract
The present invention includes an imageable element, comprising a substrate and a thermally imageable composition which includes a graft copolymer having hydrophobic and hydrophilic segments. Upon imagewise exposure to thermal energy, the graft copolymer produces exposed regions that are less soluble in a developer than the unexposed regions. Also included is a method of producing an imaged element which includes a graft copolymer according to the present invention.
Claims30
An imageable element comprising:
- a substrate;
- a thermally imageable composition coated on a surface of said substrate;
- wherein said thermally imageable composition comprises a graft copolymer having a hydrophobic polymer backbone and a plurality of pendant groups represented by the formula:
- —Q—W—Y
- wherein Q is a difunctional connecting group;
- W is selected from the group consisting of:
- a hydrophilic segment and a hydrophobic segment;
- Y is selected from the group consisting of:
- a hydrophilic segment and a hydrophobic segment;
- with the proviso that when W is a hydrophilic segment, Y is selected from the group consisting of:
- a hydrophilic segment and a hydrophobic segment, with the further proviso that when W is hydrophobic, Y is a hydrophilic segment;
- and
- a material that is capable of converting electromagnetic radiation into heat.
10 more elements
An imageable element comprising:
- a substrate;
- a thermally imageable composition coated on a surface of said substrate;
- wherein said thermally imageable composition comprises a graft polymer having a hydrophobic polymer backbone and a plurality of pendant groups represented by the formula:
- —Q—W—Y
- wherein Q is a difunctional connecting group;
- W is selected from the group consisting of:
- a hydrophilic segment and a hydrophobic segment;
- Y is selected from the group consisting of:
- a hydrophilic segment and a hydrophobic segment;
- with the proviso that when W is a hydrophilic segment, Y is selected from the group consisting of:
- a hydrophilic segment and a hydrophobic segment, with the further proviso that when W is hydrophobic, Y is a hydrophilic segment;
- wherein said graft polymer is a homopolymer derived from a polymerizable monomer represented by the formula:
- CH2═C(R1)—Q—W—Y
- wherein R1 is selected from the group consisting of:
- H, alkyl, aryl, aralkyl, alkaryl, ester, acyl, halogen and cyano;
- and Q, W and Y have the same meaning as above;
- and a material that is capable of converting electromagnetic radiation into heat.
14 more elements
An imageable element comprising:
- a substrate;
- a thermally imageable composition coated on a surface of said substrate;
- wherein said thermally imageable composition comprises a graft copolymer comprising repeating units represented by the formula:
- wherein each of R1 and R2 is independently selected from the group consisting of:
- H, alkyl, aryl, aralkyl, alkaryl, halogen and cyano;
- Q is selected from the group consisting of:
- wherein R3 is selected from the group consisting of:
- H and alkyl;
- R4 is selected from the group consisting of:
- H, alkyl, halogen, cyano, nitro, alkoxy, alkoxycarbonyl, acyl and a combination thereof;
- W is selected from the group consisting of:
- a hydrophilic segment and a hydrophobic segment;
- Y is selected from the group consisting of:
- a hydrophilic segment and a hydrophobic segment;
- Z is selected from the group consisting of:
- H, alkyl, halogen, cyano, acyloxy, alkoxy, alkoxycarbonyl, hydroxyalkyloxycarbonyl, acyl, aminocarbonyl, aryl and substituted aryl;
- is at least 1;
- k is at least 1;
- and
- m is at least 2;
- with the proviso that when W is a hydrophilic segment, Y is selected from the group consisting of:
- a hydrophilic segment and a hydrophobic segment, with the further proviso that when W is hydrophobic, Y is a hydrophilic segment;
- and a material that is capable of converting electromagnetic radiation into heat.
20 more elements
An imageable element comprising a graft copolymer comprising repeating units represented by the formula:
- wherein j and k are each at least 1;
- m is at least 5;
- and n is from about 10 to about 75.
A method of producing an imaged element comprising the steps of:
- providing an imageable element comprising:
- a substrate;
- and a thermally imageable composition coated on a surface of said substrate;
- said thermally imageable composition comprising a graft copolymer having a hydrophobic polymer backbone and a plurality of pendant groups represented by the formula:
- —Q—W—Y
- wherein Q is a difunctional connecting group;
- W is selected from the group consisting of:
- a hydrophilic segment and a hydrophobic segment;
- Y is selected from the group consisting of:
- a hydrophilic segment and a hydrophobic segment;
- with the proviso that when W is a hydrophilic segment, Y is selected from the group consisting of:
- a hydrophilic segment and a hydrophobic segment, with the further proviso that when W is hydrophobic, Y is a hydrophilic segment;
- imagewise exposing said imageable element to thermal radiation to produce exposed and unexposed regions;
- and
- contacting said imagewise exposed imageable element and a developer to remove said unexposed regions and thereby produce said imaged element.
12 more elements
A thermally imageable composition comprising:
- a graft copolymer having a hydrophobic polymer backbone and a plurality of pendant groups represented by the formula:
- —Q—W—Y
- wherein Q is a difunctional connecting group;
- W is selected from the group consisting of:
- a hydrophilic segment and a hydrophobic segment;
- Y is selected from the group consisting of:
- a hydrophilic segment and a hydrophobic segment;
- with the proviso that when W is a hydrophilic segment, Y is selected from the group consisting of:
- a hydrophilic segment and a hydrophobic segment, with the further proviso that when W is hydrophobic, Y is a hydrophilic segment;
- and
- a material that is capable of converting electromagnetic radiation into heat.
8 more elements
Dependencies are inferred from the claim text.