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Effective Period Rates of Duty Unit of Quantity Article Description Stat. Suf- fix Heading/ Subheading 2 1 Special General Poly(acrylic acid-co-(sodium 2-(acryloylamino)-2-methyl-1-propanesulfonate) sodium salt) (CAS No. 136903-34-9) in granulated form (provided for in subheading 3906.90.50).............................................................. 1/ 9902.11.04 On or before 12/31/2020 No change No change Free 1/ Poly(ammonium acryloyldimethyl taurate-co-vinyl pyrrolidone) (CAS No. 335383-60-3) (provided for in subheading 3906.90.50)................................................................................... 1/ 9902.11.05 On or before 12/31/2020 No change No change Free 1/ Poly(acrylamide-co-sodium polyacrylate) (CAS No. 25085-02-3) (provided for in subheading 3906.90.50)............ 1/ 9902.11.06 On or before 12/31/2020 No change No change Free 1/ Poly(butyl methacrylate-co-(2-dimethylaminoethyl) methacrylate-co-methyl methacrylate) 1:2:1 (CAS No. 24938-16-7) (provided for in subheading 3906.90.50)............ 1/ 9902.11.07 On or before 12/31/2020 No change No change Free 1/ Poly(ethyl acrylate-co-methyl methacrylate-co-trimethylammonioethyl methacrylate chloride) (CAS No. 33434-24-1) (provided for in subheading 3906.90.50) ........................................................................................................ 1/ 9902.11.08 On or before 12/31/2020 No change No change Free 1/ Poly(methacrylic acid-co-methyl methacrylate) (CAS No. 25086-15-1) (provided for in subheading 3906.90.50)............ 1/ 9902.11.09 On or before 12/31/2020 No change No change Free 1/ Poly(methyl acrylate-co-methyl methacrylate-co-methacrylic acid) 7:3:1 (CAS No. 26936-24-3) (provided for in subheading 3906.90.50) .................................................................................. 1/ 9902.11.10 On or before 12/31/2020 No change No change Free 1/ Starch-g-poly (propenamide-co-2-propenoic acid) potassium salt (CAS No. 863132-14-3) (Zeba) (provided for in subheading 3906.90.50)................................................................................... 1/ 9902.11.11 On or before 12/31/2020 No change No change Free 1/ Mixtures of α-(3-(3-(2H-benzotriazol-2-yl)-5-(1,1-dimethylethyl)-4-hydroxyphenyl) -1-oxopropyl)-ω-hydroxy-poly (oxy-1,2-ethanediyl) (CAS No. 104810-48-2); α-(3-(3-(2H-benzotriazol-2-yl)-5-(1,1-dimethylethyl)-4-hydroxyphenyl) -1-oxopropyl)-ω- (3-(3-(2H-benzotriazol-2-yl) -5-(1,1-dimethylethyl) -4-hydroxyphenyl) -1-oxopropoxy)-poly (oxy-1,2-ethanediyl) (CAS No. 104810-47-1); and polyethylene glycol (CAS No. 25322-68-3) (provided for in subheading 3907.20.00)................................................................................... 1/ 9902.11.12 On or before 12/31/2020 No change No change Free 1/ Oxirane, 2-methyl-, polymer with oxirane, monoether with 1,2-propanediol mono(2-methyl-2-propenoate) (CAS No. 220846-90-2) (provided for in subheading 3907.20.00) ......... 1/ 9902.11.13 On or before 12/31/2020 No change No change Free 1/ 1/ See chapter 99 statistical note 1. Rates of Duty 1 Harmonized Tariff Schedule of the United States Revision 15 (2026) Annotated for Statistical Reporting Purposes XXII 99 - II - 86 Note:The shaded areas indicate the provision has expired