Radiation-curable polymers
AssigneeMinnesota Mining and Manufacturing Company
InventorsSteven M. Heilmann, Frederick J. Palensky, Jerald K. Rasmussen
Life of this patent
Estimating the term…
Abstract
A composition comprising a radiation-curable polymer, said polymer being crosslinkable and having pendant ethylenically unsaturated peptide groups is disclosed. Such polymers are useful in the field of graphic arts.
Claims7
A densely crosslinked polymer comprising the free radical initiated reaction product of a composition comprising a radiation-curable polymer, said polymer being crosslinkable and having pendant ethylenically unsaturated peptide groups and the following structural formula ##STR12## wherein M is a unit from one or more free radically polymerizable ethylenically unsaturated monomers;
- R.sup.1 is hydrogen or methyl;
- R.sup.2 is selected from a single bond, --R.sup.3 -- and ##STR13## in which R.sup.3 is alkylene having 1 to 12 carbon atoms, preferably 1 to 6 carbon atoms, and W is --O--, --S-- or --NH--;
- R.sup.4 and R.sup.7 are independently selected from a single bond and methylene, or substituted methylene having 1 to 12 carbon atoms;
- R.sup.5 and R.sup.6 are independently alkyl or cycloalkyl having 1 to 12 carbon atoms, aryl or aralkyl having 6 to 12 carbon atoms or R.sup.5 and R.sup.6 taken together with the carbon to which they are joined form a 5- or 6-membered carbocyclic ring, or may be H when at least one of R.sup.4 and R.sup.7 is methylene;
- n is 1, 2 or 3;
- X is --O--, --NH-- or --S--;
- A is a polymerizable, ethylenically unsaturated group selected from
- (a) ##STR14## in which R.sup.8 is an alkylene group having 1 to 12 carbon atoms, an arylene group having 1 to 12 carbon atoms, an arylene group having 6 to 10 carbon atoms, or an oxyalkylene group --OR--.sub.p in which R is a lower alkylene group having 2 to 4 carbon atoms and p is 1 to 4;
- R.sup.9 and R.sup.10 are independently hydrogen, an alkyl group having 1 to 12 carbon atoms, or an aryl group having 6 to 10 carbon atoms or
- (b) --R.sup.8 WY in which R.sup.8 is as defined under the definition for A, W as defined under the definition for R.sup.2, and Y is an ethylenically unsaturated acyl group selected from the group including acryloyl, methacryloyl, cinnamoyl, maleoyl, fumaroyl, itaconoyl and crotonoyl;
- a and b are independent whole integer numbers, and b is at least 1, sufficient to provide a polymer wherein the distribution of M units and ##STR15## units is random throughout the polymer.
An energy-sensitive element comprising a substrate having a layer, said layer having a composition comprising a radiation-curable polymer, said polymer being crosslinkable and having pendant ethylenically unsaturated peptide groups and units of the following structural formula ##STR16## wherein M is a unit from one or more free radically polymerizable ethylenically unsaturated monomers;
- R.sup.1 is hydrogen or methyl;
- R.sup.2 is selected from a single bond, --R.sup.3 -- and ##STR17## in which R.sup.3 is alkylene having 1 to 12 carbon atoms, preferably 1 to 6 carbon atoms, and W is --O--, --S-- or --NH--;
- R.sup.4 and R.sup.7 are independently selected from a single bond and methylene, or substituted methylene having 1 to 12 carbon atoms;
- R.sup.5 and R.sup.6 are independently alkyl or cycloalkyl having 1 to 12 carbon atoms, aryl or aralkyl having 6 to 12 carbon atoms or R.sup.5 and R.sup.6 taken together with the carbon to which they are joined form a 5- or 6-membered carbocyclic ring, or may be H when at least one of R.sup.4 and R.sup.7 is methylene;
- n is 1, 2 or 3;
- X is --O--, --NH-- or --S--;
- A is a polymerizable, ethylenically unsaturated group selected from
- (a) ##STR18## in which R.sup.8 is an alkylene group having 1 to 12 carbon atoms, an arylene group having 1 to 12 carbon atoms, an arylene group having 6 to 10 carbon atoms, or an oxyalkylene group, --OR--.sub.p in which R is a lower alkylene group having 2 to 4 carbon atoms and p is 1 to 4;
- R.sup.9 and R.sup.10 are independently hydrogen, an alkyl group having 1 to 12 carbon atoms, or an aryl group having 6 to 10 carbon atoms or
- (b) --R.sup.8 WY in which R.sup.8 is as defined under the definition for A, W as defined under the definition for R.sup.2, and Y is an ethylenically unsaturated acyl group selected from the group including acryloyl, methacryloyl, cinnamoyl, maleoyl, fumaroyl, itaconoyl and crotonoyl;
- a and b are independent whole integer numbers, and b is at least 1, sufficient to provide a polymer wherein the distribution of M units and ##STR19## units is random throughout the polymer.
Dependencies are inferred from the claim text.