申请人:SABIC GLOBAL TECHNOLOGIES B.V.
公开号:US20200115501A1
公开(公告)日:2020-04-16
A branched polyimide of the formula (I) wherein G is a group having a valence of t present in an amount 0.01 to 20 mol %, each Q is independently the same or different, and is a divalent C
1-60
hydrocarbon group, each M is independently the same or different, and is —O—, —C(O)—, —OC(O)—, —OC(O)O—, —NHC(O), —(O)CNH—, —S—, —S(O)—, or —S(O)
2
—, D is a phenylene, each V is independently the same or different, and is a tetravalent C
4-40
hydrocarbon group, each R is independently the same or different, and is a C
1-20
divalent hydrocarbon group, q is 0 or 1, m is 0 or 1, d is 0 or 1, p is 1 or 2, t is 2 to 6, and each n is independently the same or different, and is 1 to 1,000, provided that the total of all values of n is greater than 4.