Back to results
US 7,452,921 B2Granted
Piperazine-based sensitisers
AssigneeSun Chemical Corporation
InventorsShaun Lawrence Herlihy, Brian Rowett, Robert Stephen Davidson
Life of this patent
Estimating the term…
Abstract
Compounds of formula (I) where: {R1 is methyl, ethyl, cycloalkyl or optionally substituted aryl; Z is arylene or a group of formula —(CHR4)n-, where R4 is hydrogen, hydroxy or alkyl, and n is a number from 0 to 6; Y is carbonyl or a —CH2— group; Q is a residue of a mono- or poly-hydroxyl compound having from I to 6 hydroxy groups; and x is a number from I to 6; and esters thereof} are useful as sensitizers for use in radiationcurable compositions.
Claims28
A compound of formula (I):
- where:
- R1 represents a methyl group, an ethyl group, a C5 or C6 cycloalkyl group or a C6-C10 aryl group, said aryl group being unsubstituted or being substituted by at least one C1-C4 alkyl or C1-C4 alkoxy group;
- Z represents a C6-C10 arylene group or a group of formula —(CHR4)n—, where R4 represents a hydrogen atom, a hydroxy group or a C1-C4 alkyl group, and n is a number from 0 to 6;
- Y represents a carbonyl group or a —CH2— group, provided that R4 represents a hydroxy group when Y represents a —CH2— group;
- Q represents a residue of a mono- or poly-hydroxy compound having from 1 to 6 hydroxy groups;
- and x is a number from 1 to 6;
- and esters thereof.
4 more elements
Dependencies are inferred from the claim text.