; 4-[2-(4-hydroxyphenyl)propyl]phenol (CAS No. 54579–44–1) (provided for in subheading 3909.40.00) Free No change No change On or before 12/31/2020 . 1021. Formaldehyde - 1,3-benzenediol (1:1) Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.11.37 Mixture of polymers of formaldehyde-1,3-benzenediol (1:1) (CAS No. 24969–11–7) and unreacted 1,3-Benzenediol (CAS No. 108–46–3) (provided for in subheading 3909.40.00) Free No change No change On or before 12/31/2020 . 1022. Polyurethane hardener Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.11.38 2-Oxepanone polymer with 1,4-butanediol and 5- isocyanato-1-(isocyanatomethyl)-1,3,3- trimethylcyclohexane, 2-ethyl-1-hexanol-blocked (CAS No. 189020–69–7) (provided for in subheading 3909.50.50) Free No change No change On or before 12/31/2020 . 1023. H12MDI based aliphatic polyisocyanate Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.11.39 Hexanedioic acid, dihydrazide, polymer with 5-amino-1,3,3-trimethylcyclohexanemethanamine, 1,3-butanediol and 1,1'-methylenebis[4-isocyanatocyclohexane], methyl ethyl ketone oxime- and polyethylene glycol mono-methyl ether-blocked in aqueous solution (CAS No. 200295–51–8) (provided for in subheading 3909.50.50) Free No change No change On or before 12/31/2020 . 1024. TDI based blocked aromatic polyisocyanate Subchapter II of chapter 99 is amended by inserting in numerical sequence the following new heading: 9902.11.40 Oxirane, 2-methyl-, polymer with oxirane, ether with 1,2,3-propanetriol (3:1), polymer with 2,4-diisocyanato-1-methylbenzene and α-hydro-ω-hydroxypoly[oxy(methyl-1,2-ethanediyl)] ether with 2-ethyl-2-(hydroxymethyl)-1,3-propanediol (3:1), caprolactam-blocked (CAS No. 936346–53–1) (provided for in subheading 3909.50.50) Free No change No change On or before 12/31/2020 . 1025. Self-cross linking, stoving polyurethane resin Subchapter II of chapter 99 is