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

Claim 10:
11. The composition for preparing a poly(amide-imide) copolymer according to claim 1, wherein the compound represented by Chemical Formula 4 is prepared by reacting a diamine represented by Chemical Formula 1 and a dicarbonyl compound represented by Chemical formula 2, and wherein the substituted or unsubstituted linear aliphatic diamine is present in an amount of greater than 20 mole percent and less than 90 mol percent based on the total mole numbers of diamines that include the diamine represented by Chemical Formula 1 to be used to prepare the compound represented by Chemical Formula 4 and the substituted or unsubstituted linear aliphatic diamine present in the composition:

NH2-A-NH2   Chemical Formula 1

wherein in Chemical Formula 1,
A is a ring system comprising two or more C6 to C30 aromatic rings linked by a single bond, wherein each of the two or more aromatic rings is independently unsubstituted or substituted by an electron-withdrawing group;, wherein, in Chemical Formula 2,
R3 is a substituted or unsubstituted phenylene or a substituted or unsubstituted biphenylene group, and
each X is an identical or different halogen atom.