; 2,4-diisocyanato-1-methylbenzene polymer (CAS No. 26426–91–5) in n-butyl acetate (provided for in subheading 3911.90.45) Free No change No change On or before 12/31/2020 . 1031. TDI based aromatic polyisocyanate Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.11.47 Poly(toluene diisocyanate) (CAS No. 26006–20–2) (provided for in subheading 3911.90.45) Free No change No change On or before 12/31/2020 . 1032. Water dispersable HDI based polyisocyanate Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.11.48 Water-dispersible polyisocyanate products based on poly(hexamethylene diisocyanate) (CAS No. 28182–81–2) and dimethyldicyclohexylamine compounds with 3-(cyclohexylamino)-1-propanesulfonic acid-poly(1,6-diisocyanatohexane) (CAS No. 666723–27–9) (provided for in subheading 3911.90.90) Free No change No change On or before 12/31/2020 . 1033. Water dispersible HDI based polyisocyanate Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.11.49 Poly(1,6-diisocyanatohexane)-block-polyethylene-block-poly(1-butoxypropan-2-ol) (CAS No. 125252–47–3) (provided for in subheading 3911.90.90) Free No change No change On or before 12/31/2020 . 1034. IPDI based aliphatic polyisocyanate Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.11.50 N,N′,N″-[(2,4,6-Trioxo-1,3,5-triazine-1,3,5(2H,4H,6H)-triyl)tris[methylene(3,5,5-trimethyl-3,1-cyc lohexanediyl)]]tris[hexahydro-2-oxo-1H-azepine-1-carboxamide] (CAS No. 68975–83–7) in organic solvent (provided for in subheading 3911.90.90) Free No change No change On or before 12/31/2020 . 1035. HDI based aliphatic polyisocyanate Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.11.51 3,5-Dimethyl-1H-pyrazole-oligo(hexamethylene diisocyanate) in solvents (CAS No. 163206–31–3) (provided for in subheading 3911.90.90).