Unipar Carbocloro
Unipar Carbocloro is a publicly traded Brazilian chemical company focused primarily on chlorine and soda products.
Last updated August 25, 2026
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Overview
Unipar Carbocloro is a Brazilian chemical company headquartered in São Paulo and associated with the country’s industrial and petrochemical development. The company traces its origins to 1969, when it was established as União Participações Industriais Ltda. Its early activities were connected with the formation and development of industrial assets in southeastern Brazil, including facilities involved in chemicals, polyolefins and other petroleum-derived products. The company was also identified with the pioneering installation of a petrochemical complex in São Paulo. During the 1980s and 1990s, Unipar underwent a consolidation process that reshaped its corporate structure and led to the adoption of the name Unipar – União de Indústrias Petroquímicas S/A. From the beginning of the 2000s, it entered a period of expansion through the incorporation of Rio Polímeros and capacity increases at Petroquímica União and Polietilenos União. These activities placed the company within the broader network of Brazilian petrochemical assets and helped broaden its industrial footprint beyond its original holding structure. A major strategic change occurred in 2008, when Unipar consolidated assets in southeastern Brazil in the holding company Quattor Participações. In 2010, that business was sold to Braskem and Petrobras. The transaction contributed to the formation of a much larger petrochemical platform, with Braskem becoming the largest petrochemical company in Latin America. Following the sale, Unipar retained investments in other businesses rather than disappearing from the industrial sector. The company’s next defining stage came through its relationship with Carbocloro, a chemical producer associated with chlorine and soda manufacturing. In 2013, Unipar acquired the remaining shares of Carbocloro from Occidental Petroleum Corporation. The transaction resulted in the formation of Unipar Carbocloro S/A. The company’s current shareholder structure dates from May 2013, when the transaction was approved by Brazil’s Administrative Council for Economic Defense, known as CADE. Unipar Carbocloro operates principally in the soda and chlorine industry. Its industrial activities are linked to the production of basic chemical inputs used across manufacturing and other industrial value chains. The company has also held interests outside its core chemicals business. Historical holdings included a minority stake of 25.17% in Tecsis Tecnologia e Sistemas Avançados S/A, a wind-turbine manufacturer, although the reference material indicates that Unipar no longer owns that stake. Tecsis announced plans in 2014 to build a plant in Camaçari, Bahia, illustrating the broader industrial context in which the investment operated. The Unipar Carbocloro name therefore represents the post-2013 combination of Unipar’s industrial investment history with Carbocloro’s chlorine-and-soda operations. Its historical significance lies less in consumer branding than in corporate ownership, Brazilian petrochemical consolidation and the supply of foundational chemical products.
History
Unipar Carbocloro originated in 1969 as União Participações Industriais Ltda., a Brazilian industrial investment company associated with the development of chemical and petrochemical assets. Its activities included ownership of an industrial complex producing chemicals, polyolefins and other petroleum-derived products. The company also participated in the pioneering establishment of a petrochemical complex in São Paulo, reflecting the importance of southeastern Brazil to the country’s industrialization. A consolidation process during the 1980s and 1990s changed the company’s corporate identity and operating structure. It adopted the name Unipar – União de Indústrias Petroquímicas S/A and subsequently expanded during the early 2000s. Expansion included the incorporation of Rio Polímeros and capacity increases at Petroquímica União and Polietilenos União. These moves strengthened Unipar’s position within Brazil’s petrochemical sector and increased the scale of its associated production assets. In 2008, Unipar consolidated its southeastern Brazilian assets in Quattor Participações. Two years later, the Quattor business was sold to Braskem and Petrobras. The transaction was a significant episode in Brazilian petrochemical consolidation and helped establish Braskem as the largest petrochemical company in Latin America. After the sale, Unipar continued to hold or pursue interests in other industrial businesses. The decisive transition to the Unipar Carbocloro identity took place in 2013. Unipar acquired the remaining Carbocloro shares from Occidental Petroleum Corporation. Carbocloro’s activities were centered on chlorine and soda manufacturing, and the combination created Unipar Carbocloro S/A as a publicly traded chemical company. Brazil’s Administrative Council for Economic Defense approved the transaction in May 2013, which is treated as the beginning of the company’s current shareholder structure. The company’s principal business is the production of chlorine and soda products. Its industrial history also includes involvement in polyolefins and other petrochemical products through earlier assets and subsidiaries. Outside chemicals, Unipar historically owned a 25.17% interest in Tecsis Tecnologia e Sistemas Avançados S/A, a wind-turbine manufacturer. The available reference material states that this stake is no longer held by Unipar. In 2014, Tecsis planned a new facility in Camaçari, Bahia, during the period in which that investment was part of the company’s broader portfolio. Unipar Carbocloro is consequently best understood as an industrial chemical company rather than a consumer-facing product brand. Its corporate history follows the development, consolidation and restructuring of Brazilian petrochemical and basic-chemical assets, culminating in the post-2013 combination of Unipar and Carbocloro.
- 2013
Unipar Carbocloro is formed
[1]Unipar acquired the remaining Carbocloro shares from Occidental Petroleum Corporation, creating the Unipar Carbocloro structure.
- 2013
CADE approves the transaction
[1]The Administrative Council for Economic Defense approved the transaction in May, establishing the company’s current shareholder structure.
- 2010
Quattor assets sold
[1]The Quattor business was sold to Braskem and Petrobras, contributing to the consolidation of Latin American petrochemical production.
- 2008
Assets consolidated in Quattor Participações
[1]Unipar placed its southeastern Brazilian assets into the Quattor Participações holding structure.
- 2000
Expansion through petrochemical assets
[1]In the early 2000s, Unipar expanded through the incorporation of Rio Polímeros and capacity increases at Petroquímica União and Polietilenos União.
- 1980
Corporate consolidation begins
[1]During the 1980s and 1990s, the business underwent consolidation and later adopted the Unipar – União de Indústrias Petroquímicas name.
- 1969
Company founded as União Participações Industriais
[1]The company was established as União Participações Industriais Ltda. and began building its industrial and petrochemical investment history.
Products and positioning
An industrial Brazilian chemicals company centered on chlorine and soda manufacturing, with roots in petrochemical investment and asset consolidation.
Industrial chemicals
Chlorine
Chlorine is one of Unipar Carbocloro’s core chemical outputs. It is produced within the company’s soda-and-chlorine industrial operations and serves as a basic input for downstream industrial applications. The available reference material identifies chlorine production as a central part of the company’s business but does not provide a detailed product catalogue or individual grades.
Industrial chemicals
Soda products
Soda products form the second principal part of Unipar Carbocloro’s stated operating focus. They are manufactured alongside chlorine in the company’s chemical operations and are supplied as industrial inputs rather than marketed as consumer products. The reference material does not specify individual formulations, capacities or commercial brand names.
Petrochemicals
Polyolefins and petrochemical products
Polyolefins and other petroleum-derived products were part of the industrial assets associated with Unipar’s earlier petrochemical history. Expansion in the early 2000s included Rio Polímeros and capacity increases at Petroquímica União and Polietilenos União. These assets were later consolidated into Quattor and sold in 2010, so they should be treated as historical rather than confirmed current offerings of Unipar Carbocloro.
Brand decisions
2013
Acquisition of Carbocloro sharesM&ABackground
Unipar retained investment activities after the Quattor divestment and pursued a stronger position in basic chemicals.
Action taken
Unipar acquired the remaining shares of Carbocloro from Occidental Petroleum Corporation.
Aftermath
The transaction created Unipar Carbocloro S/A. CADE approved the deal in May 2013, establishing the company’s current shareholder structure.
2010
Sale of Quattor to Braskem and PetrobrasM&ABackground
Following the consolidation of its southeastern petrochemical assets, Unipar participated in a transaction that transferred the Quattor business to major Brazilian energy and petrochemical groups.
Action taken
Quattor was sold to Braskem and Petrobras.
Aftermath
The transaction strengthened Braskem’s position and contributed to the emergence of Latin America’s largest petrochemical company.
2008
Consolidation of southeastern assets in QuattorStrategyBackground
Unipar sought to consolidate its southeastern Brazilian petrochemical assets within a dedicated holding structure.
Action taken
The assets were brought together under Quattor Participações.
Aftermath
The Quattor business was subsequently sold to Braskem and Petrobras in 2010.
Sources1 sources
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