EXHIBIT 21 Subsidiaries of the Registrant The following are subsidiaries of Crompton & Knowles Corporation: Name Place of Organization CK Holding Corporation Delaware Crompton & Knowles of Canada Ltd. Canada Crompton & Knowles Colors Incorporated Delaware Crompton & Knowles Europe S.P.R.L. Belgium Crompton & Knowles (France) S.A. France Crompton & Knowles (Deutschland) GmbH Germany Crompton & Knowles (Hong Kong) Ltd. Hong Kong Crompton & Knowles (Korea) Ltd. Korea Crompton & Knowles (Espagna) SL Spain Crompton & Knowles (Italia) SRL Italy Crompton & Knowles (Nederland) B.V. Netherlands Crompton & Knowles (Portugal) LDA Spain Crompton & Knowles Receivables Corporation Delaware Crompton & Knowles Services S.P.R.L. Belgium C&K Services (Luxembourg) S.A. Luxembourg Crompton & Knowles (Luxembourg) S.A. Luxembourg Crompton & Knowles (United Kingdom) Ltd. United Kingdom CNK Disposition Corporation Florida Crompton & Knowles Acceptance Corporation Massachusetts Crompton & Knowles Chemical Realty Pennsylvania Crompton & Knowles International, Inc. US Virgin Islands Crompton & Knowles I.P.R. Corporation Delaware Crompton & Knowles Overseas Corporation Delaware Crompton & Knowles Chemische Produckte GmbH & Co. K.G. Dusseldorf Kem Manufacturing Corporation Georgia Kem International Corporation Delaware Davis-Standard Corporation Delaware Davis-Standard (France) SARL France Davis-Standard (Deutschland) GmbH Germany Davis-Standard Limited England & Wales ER-WE-PA Davis-Standard GmbH Germany Agro ST Inc. Delaware GT Seed Treatment, Inc. Minnesota Gustafson International Company Texas Gustafson LLC Delaware Gustafson Partnership Ontario Hannaford Seedmaster Services (Australia) Pty. Ltd. Australia Industrias Gustafson S.A. de C.V. Mexico Inmobiliaria Huilquimex, S.A. de C.V. Mexico (Continued) The following are subsidiaries of Crompton & Knowles Corporation: Interbel Trading, Inc. Florida Lokar Enterprises, Inc. Delaware ParaTec Elastomers LLC Delaware Naugatuck Treatment Company Connecticut Nitrilo S.A. de C.V. Mexico Uniroyal Chemical Holding S.A. de C.V. Mexico Uniroyal Chemical S.A. de C.V. Mexico Rubicon Inc. Louisiana TOA Uni Chemicals Ltd. Thailand TOA Uni Chemical Manufacturing Ltd. Thailand Trace Chemicals LLC Delaware Ecart, Inc. Nevada Unicorb Limited England Uniroyal Chemical Korea Inc. Korea Uniroyal Chemical Asia, Ltd. Delaware Uniroyal Chemical Asia Pte. Ltd. Singapore Uniroyal Chemical B.V. The Netherlands Uniroyal Chemical Brazil Holding, Inc. Delaware Uniroyal Chemical Co./Cie. Canada Uniroyal Chemical Company, Inc. New Jersey Uniroyal Chemical Company Limited Bahamas/Delaware Uniroyal Chemical European Holdings B.V. The Netherlands Uniroyal Chemical Export Limited Delaware Uniroyal Chemical Holdings B.V. The Netherlands Uniroyal Chemical International Company Texas Uniroyal Chemical International Sales Corp. Barbados Uniroyal Chemical Investments Ltd. Canada Uniroyal Chemical Leasing Company, Inc. Delaware Uniroyal Chemical Limited Scotland Uniroyal Chemical Netherlands B.V. The Netherlands Uniroyal Chemical Overseas B.V. The Netherlands Uniroyal Chemical Partipacoes Ltda. Brazil Uniroyal Chemical (Proprietary) Limited South Africa Uniroyal Chemical Pty. Ltd. Australia Uniroyal Chemical S.A. Spain Uniroyal Chemical S.A.R.L. Switzerland Uniroyal Chemical Specialties, Inc. Delaware Uniroyal Chemical Taiwan Ltd. Taiwan Uniroyal Chemical Technology B.V. The Netherlands Uniroyal Chimica SrL Italy Uniroyal Quimica S.A. Brazil Uniroyal Quimica Sociedad Anonima Comerciale Industrial Argentina 9056-0921 Quebec Inc. Canada