Company history has close links with developments in Germany

It all started with alizarin red

Covestro has been a separate legal entity since September 2015. It arose out of the Bayer Group, whose roots extend back to the 19th century. Many key events in the company’s history are linked with developments in its home country Germany. Covestro is among the world’s largest polymers companies and a leader in research and production.

Today
2015
2014

Bayer CEO Dr. Marijn Dekkers announces that Bayer MaterialScience will be transformed into a separate company.

Opening of the TDI plant

Conclusion of the one of the most important capital expenditure projects of the last decade: With the symbolic push of a button, Bayer CEO Dr. Marijn Dekkers, Patrick Thomas, CEO of Bayer MaterialScience, NRW Governor Hannelore Kraft and André van Broich, Chairman of the Dormagen Works Council, bring the state-of-the-art, large-scale TDI plant in Dormagen on stream.

2012

Bayer MaterialScience is authorized to construct and operate a new TDI-scale plant at the Dormagen site.

2011

A pilot plant for the production of chlorine is put into operation at the site in Krefeld-Uerdingen. It uses advanced oxygen-depolarized cathode technology.

Bayer MaterialScience announces plans to expand its MDI plant at the Brunsbüttel site.

2010

In Brunsbüttel, the new facility for the production of carbon monoxide goes on stream.

2008

The Bayer plants in Leverkusen, Dormagen and Krefeld-Uerdingen are collectively known as “CHEMPARK.” The operator is CURRENTA, the newly founded subsidiary of Bayer and LANXESS.

2005

Bayer MaterialScience thus becomes an industrial park operator.

2004

Bayer AG undergoes a comprehensive restructuring process. The plastics unit becomes Bayer MaterialScience, an independent subgroup.

2003

The TDI facility in Brunsbüttel is expanded. Bayer also builds a new facility for the production of chlorine using state-of-the-art oxygen-depolarized cathode technology.

1991

Bayer builds a production facility for aniline in Brunsbüttel.

1988

Bayer starts producing MDI at its site in Brunsbüttel.

1981

In Brunsbüttel, Bayer begins producing raw materials for dyes and also opens an on-site training facility.

1977

Production gets under way at the Brunsbüttel site. The first product manufactured is TDI.

1973

Bayer lays the cornerstone for its plant in Brunsbüttel.

1965

Production of MDI, which is needed for rigid polyurethane foam, begins in Krefeld-Uerdingen.

1964

In Dormagen, Bayer starts producing TDI, an important raw material for flexible polyurethane foam.

1960

The first facility for the production of chlorine goes on stream at the Krefeld-Uerdingen site.

1958

Industrial production of the polycarbonate Makrolon® begins in Krefeld-Uerdingen.

1957

Bayer joins forces with Deutsche BP to found Erdölchemie GmbH in Dormagen.

1954

Bayer produces Dralon®, the first polyacrylic fiber, at its plant in Dormagen.

1953

Bayer chemist Hermann Schnell invents polycarbonate in the central laboratory of the Krefeld-Uerdingen plant.

1951

Re-establishment of Bayer as "Farbenfabriken Bayer A.G.,” including the plants in the Lower Rhine region and Elberfeld.

1950

Perlon®, the first polyamide fiber, is produced at the plant in Dormagen.

1945

The British military government assumes full control of the plants in the Lower Rhine region. I.G. Farbenindustrie AG is dissolved.

1937

Chemist Otto Bayer invents polyurethanes in Leverkusen. Because the advantages of the new material are initially unclear, a number of years pass before industrial production begins.

1926

Bayer launches the copper synthetic silk Cupresa®, produced in Dormagen. The related product Cuprama® follows in 1934. This innovation makes silk stockings affordable for everyone.

1925

Leading German chemical companies including Bayer merge to form I.G. Farbenindustrie AG.

1917

Dormagen becomes the next Bayer site. The company starts producing sulfuric and picric acid there.

1912

Leverkusen becomes Bayer’s headquarters.

1891

Due to limited space at its original site in Wuppertal-Elberfeld, Bayer has exhausted its expansion options. Bayer therefore purchases land in Leverkusen – initially the alizarin red factory of Dr. Carl Leverkus & Söhne – and later additional land on the Rhine.

1881

The general partnership “Friedr. Bayer et comp.” is converted into a stock company called “Farbenfabriken vorm. Friedr. Bayer & Co.” The company’s impressive growth in its formative years is also reflected in its employee numbers, which rose from three in 1863 to more than 300 in 1881.

1877

The chemical industry is in full swing following the construction of a steam engine in a shed near the Rhine. In Krefeld-Uerdingen, the small chemistry company “Dr. Edmund ter Meer & Cie” is founded to produce synthetic dyes.

1863

The general partnership “Friedr. Bayer et comp.” is founded in Barmen – now part of Wuppertal – by dye salesman Friedrich Bayer (1825 - 1880) and master dyer Johann Friedrich Weskott (1821 - 1876). The company manufactures and sells synthetic dyes such as alizarin red.

1861

Carl Leverkus, manufacturer of synthetic dyes, moves his factory for ultramarine blue to Wiesdorf on the Lower Rhine. Houses are built around the new production facilities to accommodate employees who relocated with the factory. The complex is given the name Leverkusen after its manager.