Silicone-organic copolymer, sealants comprising same, and related methods

A silicone-organic copolymer having the formula Xg[ZjYo]c,

• wherein each Y comprises an independently selected organic moiety selected from polycarbonate moieties, polyester moieties, and polyacrylate moieties;
• wherein each X is independently a silicone moiety having formula -D1-SiR1a(OR)3−a;
• where each D1 is an independently selected divalent group;
• each R1 is an independently selected substituted or unsubstituted hydrocarbyl group having from 1 to 18 carbon atoms;
• each R is an independently selected alkyl group having from 1 to 10 carbon atoms;
• and each subscript a is independently selected from 0 to 2;
• and wherein each Z is an independently selected siloxane moiety having the formula [R1hSiO(4−h)/2]d;
• where each R1 is defined above;
• each subscript d is from 1 to 1000;
• and each subscript h is independently selected from 0 to 2 in each moiety indicated by subscript d;
• wherein each subscript j is independently >0 and <2, each subscript o is independently >0 and <2, with the proviso that j+o=2 in each moiety indicated by subscript c;
• subscript c is from 1 to 150;
• and subscript g is >1.