1 EXHIBIT 21 THE GEON COMPANY SUBSIDIARIES Jurisdiction of Name Incorporation - ---- ------------- 1997 Chloralkali Venture Inc. Alabama The Geon Company Australia Limited Australia Auseon Limited Australia Geon Canada Inc. Canada LP Holdings, Inc. Canada Geon Engineering Vinyls Limited England Hydro Geon (1) England(2) La Porte Chemicals Corp. Delaware Lincoln & Southern Railroad Company Delaware Sunbelt Chlor Alkali Partnership (1) Delaware(2) SPC Geon PTE LTD. (1) Singapore(2) Inversiones The Geon Company de Venezuela C.A. Venezuela Notes: (1) Owned 50% by the Company. (2) Partnership