EXHIBIT 21 SPARTECH CORPORATION SUBSIDIARIES OF REGISTRANT Legal Entity DBA Incorporation Atlas Alchem Plastics, Spartech Plastics Delaware Inc. TKM Plastics, LP Spartech Plastics Missouri Franklin-Burlington Spartech Vy-Cal Delaware Plastics, Inc. Spartech Polycom Alchem Plastics, Inc. Spartech Plastics Delaware Alchem Plastics Spartech Plastics Georgia Corporation Anjac-Doron Plastics, Inc. Spartech Profiles Delaware Spartech Polycom, Inc. Spartech Polycom Pennsylvania Spartech Color PH Chemicals, Inc. Spartech Plastics Delaware Spartech Polycom, S.A.S. Spartech Polycom France PolyTech South, Inc. Spartech Polycom Delaware UVTEC, LP Spartech Polycom Texas Spartech Plastics, Inc. Spartech Plastics Delaware Spartech Profiles Spartech Industries, Inc. Spartech Industries Delaware Spartech Profiles Spartech Canada, Inc. Spartech Industries New Brunswick, Canada Spartech Color Spartech Plastics Spartech Profiles Alshin Tire Corporation Alshin Tire Corporation California Spartech Industries Spartech Polycast, Inc. Spartech Polycast Delaware Legal Entity DBA Incorporation Spartech Townsend, Inc. Spartech Townsend Delaware Spartech Industries Spartech Marine Delaware Florida, Inc.