Hydrophilic silicone elastomers

A photolithographically-produced master comprising an elastomer applied to a support, wherein the elastomer is formed by curing a silicone composition to form an crosslinked organopolysiloxane backbone copolymer, wherein the silicone composition has been subjected to an extraction process after being cured, the crosslinked organopolysiloxane backbone copolymer comprising:

• i) an organopolysiloxane component that comprises an organopolysiloxane having the following general formula:
• wherein,
• each R2 is individually selected from unsubstituted and substituted monovalent hydrocarbon groups containing from 1 to 20 carbon atoms;
• each R3 is individually selected from unsubstituted and substituted alkenyl groups containing from 1 to 20 carbon atoms;
• x≧1;
• and
• y≧0 and is selected so that the organopolysiloxane contains an average of at least two alkenyl groups per molecule;
• ii) acrylic acid that is incorporated into the crosslinked organopolysiloxane backbone copolymer;
• iii) a silicon hydride crosslinking agent;
• and
• iv) a platinum-based catalyst.