Patent ID: 7799950

Claim:
A diamine comprising a structure of formula (I) wherein X and Y are independently a divalence group selected from the group consisting of: —O—, —(C═O)—O—, —O—(C═O)—, —(C═O) —NH—, and —NH—(C═O)—; and R has a structure of formula (II): wherein R 1 is selected from the group consisting of: wherein D 1 , D 2 , and D 3 are independently selected from the group consisting of: —NH—, —O—, and —S—; d1, d2, and d3 are independently 0 or 1; R 6 , R 7 , and R 8 are independently selected from the group consisting of: hydrogen, halogen, and C 1 -C 30 alkyl; and Z is selected from the group consisting of: wherein, in formulas (VI-1) and (VI-5), D 4 , D 5 , D 6 , and D 7 are independently selected from the group consisting of: d4, d5, d6, and d7 are independently 0 or 1; R 9 is a C 11-30 linear chain alkyl; R 10 is selected from the group consisting of: hydrogen, fluorine, and C 1-6 alkyl; P and Q are independently selected from the group consisting of: 1,4-phenylene, 1,4-cyclohexylene, 1,4-cyclohexenylene, and 1,4-cyclohexadienylene; and e and f are independently an integer of 0 to 2, and cannot be 0 at the same time; wherein, in formula (II), R 2 , R 3 , R 4 , and R 5 are independently selected from the group consisting of: hydrogen and C 1 -C 3 alkyl; and n and m are independently an integer of 0 to 3; and wherein, when R 1 is formula (VI) and Z is formula (VI-1), n and m cannot be 0 at the same time.