Basell Polyolefins
A former international producer of polyethylene, polypropylene, and related polyolefin technologies.
Last updated August 24, 2026
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Overview
Basell Polyolefins was an international petrochemicals company focused on polyolefins, especially polyethylene and polypropylene. It was established as a joint venture between BASF and Royal Dutch Shell, drawing on the two groups’ substantial chemical and polymer businesses. The company also inherited technology, assets, and industrial expertise associated with a broader lineage of predecessor businesses, including Hercules, Himont, Hoechst, ICI, Montecatini, and Montedison. Basell’s industrial background was tied to the development of modern polyolefins. Research associated with Karl Ziegler and Giulio Natta helped establish the catalytic methods that enabled large-scale production of polyethylene and polypropylene. Several companies in Basell’s heritage were early participants in this transformation, which changed the economics and applications of plastics and became a foundation of the modern petrochemicals industry. The company operated as a specialist materials producer rather than as a consumer-facing brand. Its business centered on polyolefin resins and the technological and manufacturing capabilities required to supply them to industrial customers. Polyethylene and polypropylene are used across packaging, molded products, automotive components, household goods, construction applications, and other sectors, although the available reference material does not provide a detailed product catalogue or market-by-market breakdown for Basell itself. In August 2005, Access Industries, associated with Leonard Blavatnik, acquired Basell from BASF and Royal Dutch Shell for approximately $5.7 billion. The transaction changed the company from a joint venture owned by major chemical and energy groups into a privately controlled business. The acquisition was followed by a major expansion strategy. In 2007, Basell acquired the privately held United States company Lyondell Chemical Company and combined with it to create LyondellBasell. The merger marked the end of Basell Polyolefins as a standalone corporate entity. The transaction was subsequently criticized because Basell’s management had reportedly opposed the acquisition and because the purchase price was described as substantially above market levels. The combined company later entered Chapter 11 bankruptcy proceedings in the United States in January 2009. LyondellBasell completed its emergence from bankruptcy in 2010, with the reference material giving April as the month of emergence in one account and May in another. Basell therefore survives principally through the corporate and industrial legacy incorporated into LyondellBasell, rather than as an independent operating company.
History
Basell Polyolefins originated in a joint venture formed by BASF and Royal Dutch Shell. Its corporate and technological heritage was broader than the joint venture itself, incorporating activities and knowledge associated with companies such as Hercules, Himont, Hoechst, ICI, Montecatini, and Montedison. These predecessor businesses were involved in the development of polyolefin chemistry and industrial production. The company’s history was connected to the emergence of modern polyethylene and polypropylene manufacturing. Work by Karl Ziegler and Giulio Natta was central to the development of catalytic processes that made these materials commercially important. The resulting polyolefin revolution began in the late 1930s and accelerated during the 1950s, creating a major new foundation for the plastics and petrochemicals sectors. Basell’s predecessor companies were among the organizations that helped advance this transition. As a business, Basell concentrated on polyolefin products and related industrial capabilities. Its principal materials were polyethylene and polypropylene, polymers used by manufacturers in packaging, consumer products, automotive applications, construction, and other industrial markets. The company was primarily a business-to-business materials supplier, and the available references do not establish a separate consumer retail identity or a detailed list of branded product families. In August 2005, Leonard Blavatnik’s Access Industries acquired Basell from its original joint-venture owners, BASF and Royal Dutch Shell. The reported purchase price was approximately $5.7 billion. This acquisition placed Basell under private ownership and set the stage for a subsequent consolidation strategy. In 2007, Basell acquired Lyondell Chemical Company, a privately owned US chemical business. The two companies were combined to form LyondellBasell. The transaction was controversial in corporate and financial reporting because it was pursued despite opposition from Basell senior management and was characterized as having been completed at a price well above market levels. The reference account also states that Access Industries had a significant interest in Lyondell and benefited financially from the transaction. The newly combined company encountered severe financial difficulties. LyondellBasell filed for Chapter 11 protection in the United States in January 2009. It later completed its restructuring and emerged from bankruptcy in 2010; the available account refers to April in one passage and May in another. Basell Polyolefins ceased to exist as an independent company following the 2007 merger, while its polyolefin operations, technologies, and corporate heritage continued within LyondellBasell.
- 2010
Successor company exits bankruptcy
[1]LyondellBasell emerged from its US bankruptcy proceedings after restructuring.
- 2009
Successor company enters bankruptcy
[1]LyondellBasell filed for Chapter 11 bankruptcy protection in the United States.
- 2007
Creation of LyondellBasell
[1]Basell acquired Lyondell Chemical Company and combined with it to form LyondellBasell.
- 2005
Acquisition by Access Industries
[1]Access Industries acquired Basell from BASF and Royal Dutch Shell for approximately $5.7 billion.
- 1950
Expansion of industrial polyolefin production
[1]The industrial development of polyolefins accelerated during the 1950s, with several Basell predecessor companies among the important participants.
- 1930
Early foundations of the polyolefin revolution
[1]Research associated with Karl Ziegler and later Giulio Natta helped establish catalytic approaches that underpinned modern polyethylene and polypropylene production.
Products and positioning
Industrial polyolefin producer and polymer-technology company serving downstream manufacturing markets.
Polyolefin resin
Polyethylene
Polyethylene was one of Basell’s principal product areas. It is a widely used thermoplastic supplied to industrial converters for applications such as packaging, containers, films, pipes, and molded goods. The available reference identifies polyethylene as a core Basell product but does not specify individual grades, trade names, or production sites.
Polyolefin resin
Polypropylene
Polypropylene was another central Basell product. The material is used in packaging, automotive parts, household products, fibers, and other molded or converted applications. Basell’s polypropylene business reflected the company’s heritage in catalytic polymer technology and large-scale petrochemical manufacturing. Specific product grades are not identified in the supplied references.
Controversies
2007
Controversy surrounding the Lyondell acquisition
The 2007 acquisition of Lyondell Chemical Company was criticized because it was reportedly pursued against the advice of Basell senior management and at a price considered substantially above market levels. The transaction was followed by the creation of LyondellBasell and later financial distress.
Brand decisions
2007
Basell acquires Lyondell Chemical CompanyM&ABackground
Access Industries pursued a major expansion of Basell through the acquisition of a privately owned US chemical company.
Action taken
Basell acquired Lyondell Chemical Company and combined with it to form LyondellBasell.
Aftermath
The combined company later filed for Chapter 11 protection in the United States in January 2009 and subsequently emerged from bankruptcy in 2010.
2005
Access Industries purchases BasellM&ABackground
Basell had previously operated as a joint venture between BASF and Royal Dutch Shell.
Action taken
Access Industries acquired the company from the two venturers for approximately $5.7 billion.
Aftermath
The acquisition placed Basell under private ownership and preceded its combination with Lyondell Chemical Company.
Acquisition value. $5.7 billion (August 2005)
Recent events
- 2010
LyondellBasell emerges from bankruptcy[1]
Bankruptcy · Other
LyondellBasell emerged from US bankruptcy proceedings in 2010, marking a restructuring of the successor business.
- 2009
LyondellBasell files for Chapter 11 bankruptcy protection[1]
Bankruptcy
The combined LyondellBasell company filed for bankruptcy protection in the United States after the 2007 combination.
- 2007
Basell merges with Lyondell Chemical Company[1]
M&A
Basell acquired the privately owned US chemical company Lyondell Chemical Company, creating LyondellBasell.
- 2005
Access Industries acquires Basell Polyolefins[1]
M&A
Access Industries acquired Basell from BASF and Royal Dutch Shell in a transaction valued at approximately $5.7 billion.
Sources1 sources
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