| abstract |
Silsesquioxane polymers, compositions, methods, and articles comprising such polymers are disclosed, wherein the polymers comprise a three-dimensional network of formula (I): wherein: each R 1 And R 2 Independently is (C1-C4) alkyl; each L 1 And L 2 Independently a single bond, an alkylidene group, or an alkylidene group bonded to a group selected from the group consisting of oxy, thio, carbonyl, -NH-, and combinations thereof; each R 3 Independently a linear (C14-C100) alkyl group; each R 4 Independently (C1-C30) alkyl, (C2-C30) heteroalkyl having at least one oxygen, sulfur, or-NH-group, or (C1-C30) alkyl substituted with fluorine, mercapto, isocyanate, cyanato, hydroxyl, glycidoxy, or epoxy; provided that L is 1 、L 2 And R 4 Is selected such that each Si atom is directly bonded to an alkylidene or alkyl group; m is an integer of at least 2; n is 0 or an integer greater than 0; m + n is an integer of at least 3; each oxygen atom at an asterisk (#) is bonded to another Si atom within the three-dimensional network; and the silsesquioxane polymer is solid at 25 ℃. |