4.4% No change No change On or before 12/31/2025 . 11508. Benzene, 2,4-diisocyanato-1,3,5-tris(1-methylethyl)-, homopolymer Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.24.39 Benzene, 2,4-diisocyanato-1,3,5-tris(1-methylethyl)-, homopolymer (CAS No. 29963–44–8) (provided for in subheading 3812.39.60) Free No change No change On or before 12/31/2025 . 11509. Aromatic amine antioxidants Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.24.40 Aromatic amine liquid antioxidants for various polymers consisting of benzenamine, N-phenyl-, reaction products with 2,4,4-trimethylpentene (CAS No. 68411–46–1) (provided for in subheading 3812.39.60) Free No change No change On or before 12/31/2025 . 11510. Antioxidant blends Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.24.41 Antioxidant blends for polymers consisting of tetrakismethylene (3, 5-di-t-butyl-4-hydroxyhydrocinnamate) methane (CAS No. 6683–19–8) and tris (2, 4-di-t-butylphenyl) phosphite (CAS No. 31570–04–4) (provided for in subheading 3812.39.60) Free No change No change On or before 12/31/2025 . 11511. Antioxidant blends to protect polymers Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.24.42 Antioxidant blends for polymers consisting of N, N′-hexamethylene bis[3-(3,5-di-t-butyl-4-hydroxyphenyl)propionamide] (CAS No. 23128–74–7) and tris (2, 4-di-t-butylphenyl) phosphite (CAS No. 31570–04–4) (provided for in subheading 3812.39.60) Free No change No change On or before 12/31/2025 . 11512. Synthetic hydrotalcite coated with fatty acid and magnesium stearate Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.24.43 Polyvinyl chloride stabilizers consisting of magnesium aluminum hydroxide carbonate (synthetic hydrotalcite) (CAS No. 11097–59–9) coated with fatty acids (CAS No.