EXHIBIT 4.1 REGISTRATION RIGHTS AGREEMENT Dated as of December 4, 200l by and among Lyondell Chemical Company ARCO Chemical Technology, Inc. ARCO Chemical Technology, L.P. Lyondell Chemical Nederland, Ltd.Registration Rights Agreement • January 10th, 2002 • Lyondell Chemical Nederland LTD • Petroleum refining • New York
Contract Type FiledJanuary 10th, 2002 Company Industry Jurisdiction
andIndenture • January 10th, 2002 • Lyondell Chemical Nederland LTD • Petroleum refining • New York
Contract Type FiledJanuary 10th, 2002 Company Industry Jurisdiction
EXHIBIT 3.8 ARCO CHEMICAL TECHNOLOGY, L.P. AGREEMENT OF LIMITED PARTNERSHIPLimited Partnership Agreement • January 10th, 2002 • Lyondell Chemical Nederland LTD • Petroleum refining • Delaware
Contract Type FiledJanuary 10th, 2002 Company Industry Jurisdiction