Patent ID: 11898012
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Other special machines (Mechanical engineering)
Classification: CPC C  B | IPC B  C

Claim 0:
1. A composition for preparing a poly(amide-imide) copolymer comprising a substituted or unsubstituted linear aliphatic diamine, a compound represented by Chemical Formula 4, and a tetracarboxylic acid dianhydride comprising a combination of a compound represented by Chemical Formula 3-1 and a compound represented by Chemical Formula 3-2, and a solvent:, wherein, in Chemical Formula 4,
R3 is a substituted or unsubstituted phenylene or a substituted or unsubstituted biphenylene group,
n0 is a number greater than or equal to 1, and
Ar1 and Ar2 are each independently represented by Chemical Formula 5:, wherein, in Chemical Formula 5,
R6 and R7 are each independently an electron withdrawing group selected from —CF3, —CCl3, —CBr3, —Cl3, —NO2, —CN, —C(═O)CH3, and —CO2C2H5,
R8 and R9 are each independently a halogen, a hydroxy group, a substituted or unsubstituted C1 to C10 aliphatic organic group, a substituted or unsubstituted C6 to C20 aromatic organic group, an alkoxy group of formula —OR204, wherein R204 is a C1 to C10 aliphatic organic group, or a silyl group of formula —SiR205R206R207 wherein —R205, R206, and R207 are each independently hydrogen or a C1 to C10 aliphatic organic group,
n3 is an integer ranging from 1 to 4, n5 is an integer ranging from 0 to 3, provided that n3+n5 is an integer ranging from 1 to 4, and
n4 is an integer ranging from 1 to 4, n6 is an integer ranging from 0 to 3, provided that n4+n6 is an integer ranging from 1 to 4;, ,