Antidegradant bis(dihydro and tetrahydroquinoline) compounds and uses thereof

A compound having Formula (I):

• or a salt or solvate thereof, wherein:
• each is a single or double bond;
• R1a and R2a are each independently selected from the group consisting of C1-C12 alkyl, —C(═O)OR′, —C(═O)NR′R″, —C(═O)SR′, —CH2OR′, —CH2OC(═O)R′, and
• R1b and R2b are each independently selected from the group consisting of hydrogen and C1-C12 alkyl;
• R1c and R2c are each independently selected from the group consisting of C1-C12 alkyl, —C(═O)OR′, —C(═O)NR′R″, —C(═O)SR′, —CH2OR′, —CH2OC(═O)R′, and
• with the proviso that at least one of R1a, R1c, R2a, and R2c is selected from the group consisting of —C(═O)OR′, —C(═O)NR′R″, —C(═O)SR′, —CH2OR′, —CH2OC(═O)R′, and
• R1d and R2d are each independently selected from the group consisting of hydrogen and C1-C2 alkyl;
• R′ and R″ at each occurrence are independently selected from the group consisting of hydrogen, C1-C12 alkyl, C3-C6 cycloalkyl, and optionally substituted phenyl;
• X is selected from the group consisting of —CHR3a—, —NR3b—, —O—, and —S—;
• Z at each occurrence is independently selected from the group consisting of —O—, —S—, and —NR11—;
• R10a, R10b, R10c, and R10d are each independently selected from the group consisting of hydrogen, C1-C12 alkyl, and optionally substituted phenyl;
• R11 at each occurrence is selected from the group consisting or hydrogen and C1-C6 alkyl;
• R3a is selected from the group consisting of hydrogen, C1-C12 alkyl, C3-C6 cycloalkyl, optionally substituted phenyl, optionally substituted 5- or 6-membered heterocyclo, and optionally substituted 5- or 6-membered heteroaryl;
• R3b is selected from the group consisting of hydrogen, C1-C12 alkyl, C3-C6 cycloalkyl, optionally substituted phenyl, optionally substituted 5- or 6-membered heterocyclo, and optionally substituted 5- or 6-membered heteroaryl;
• and
• R4, R5, R6, R7, R8, and R9 are independently selected from the group consisting of hydrogen, halogen, C1-C6 alkyl, C1-C6 alkoxy, and C1-C6 alkylthio.