| http://www.w3.org/ns/prov#value | - wherein B3 is a bond or a straight or branched alkylene, alkylene-oxa-alkylene or alkylene-oligooxa-alkylene group, any of which optionally includes one or more fluorine substituents; Y3 is an ethylenically unsaturated polymerisable group and Q4 is a hydroxyl group. 42.
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