Polymer, coating composition comprising same, and organic light emitting device using same

A polymer comprising:

• a first unit of the following Formula 1;
• and
• a second unit of the following Formula 2:
• in Formulae 1 and 2,
• L1, L2, and L4 to L6 are the same as or different from each other, and each independently a direct bond;
• —O—;
• a substituted or unsubstituted alkylene group;
• a substituted or unsubstituted arylene group;
• a substituted or unsubstituted divalent amine group;
• or a substituted or unsubstituted divalent heterocyclic group,
• L3 is a substituted or unsubstituted divalent carbazole group;
• a substituted or unsubstituted divalent fluorenyl group;
• or a substituted or unsubstituted phenylene group,
• a1, a2, and a3 are the same as or different from each other, and each independently an integer from 1 to 10,
• when a1 is 2 or higher, each L1 is the same as or different from each other,
• when a2 is 2 or higher, each L2 is the same as or different from each other,
• when a3 is 2 or higher, each L4 is the same as or different from each other,
• Ar1 to Ar4 are the same as or different from each other, and each independently a substituted or unsubstituted alkyl group;
• a substituted or unsubstituted alkoxy group;
• a substituted or unsubstituted aryloxy group;
• a substituted or unsubstituted aryl group;
• or a substituted or unsubstituted heterocyclic group,
• R1 to R11 are the same as or different from each other, and are each independently hydrogen;
• deuterium;
• a halogen group;
• a hydroxyl group;
• a cyano group;
• a substituted or unsubstituted alkyl group;
• a substituted or unsubstituted cycloalkyl group;
• a substituted or unsubstituted alkoxy group;
• a substituted or unsubstituted aryl group;
• or a substituted or unsubstituted heterocyclic group,
• r1, r2, and r4 are the same as or different from each other, and each independently an integer from 1 to 4,
• r3 and r5 are the same as or different from each other, and each independently an integer from 1 to 3,
• when r1 is 2 or higher, each R1 is the same as or different from each other, and
• when r2 is 2 or higher, each R2 is the same as or different from each other,
• when r3 is 2 or higher, each R3 is the same as or different from each other,
• when r4 is 2 or higher, each R4 is the same as or different from each other,
• when r5 is 2 or higher, each R5 is the same as or different from each other,
• p is a repeating number of the first unit, and an integer from 1 to 100, and
• q is a repeating number of the second unit, and an integer from 1 to 100.