Crosslinkable polysiloxane

A liquid polysiloxane comprising a siloxane-thiourea segment and a crosslinkable functional group(s) selected from one or more ethylenically unsaturated groups, silyl hydride groups, alkylenethiol groups and combinations thereof,

• wherein the siloxane-thiourea segment comprises a structure of formula (III);
• wherein:
• each RA and RB are independently selected from H, optionally substituted alkyl, optionally substituted aryl, optionally substituted siloxane, a moiety comprising an alkylenethiol group, and a moiety comprising one or more ethylenically unsaturated groups;
• each X is independently selected from optionally substituted alkylene, optionally substituted arylene, (poly)siloxane, polyether, polyimide and polyester;
• R1 is independently optionally substituted alkylene or optionally substituted arylene;
• n is an integer of at least 1;
• p is an integer of at least 1;
• and
• q is an integer of at least 1.