Crompton Corporation

Crompton Corporation (NYSE: CK, formerly Crompton and Knowles) was a chemical research, production, sales and distribution company headquartered in Middlebury, Connecticut. The company produced specialty chemicals used for polymers, fire suppressants and retardants, pool and spa water purification systems and various other applications. In 2005, Crompton merged with Great Lakes Chemical Corporation to become Chemtura.

Crompton Corporation
PredecessorCrompton Loom Works
Crompton & Knowles Loom Works
Witco Corporation
FoundedWorcester, Massachusetts (1837 (1837))
FounderWilliam Crompton
Defunct2005 (2005)
FateAcquired by Chemtura Corporation
SuccessorChemtura Corporation
Area served
ProductsFine chemicals, inorganic compounds


Share of the Crompton & Knowles Loom Works, issued 4. December 1912

Crompton Corporation traced its origins to 1837 when founder William Crompton invented a loom for weaving patterns in cotton, an innovation that led in the 1840s to the founding of Crompton Loom Works in Worcester, Massachusetts by his son George Crompton. The company merged in 1879 with rival Knowles Brothers to form the Crompton & Knowles Loom Works.[1] In 1999, Crompton & Knowles merged with Witco Corporation to form Crompton Corporation.[1]

In 2005, Crompton merged with Great Lakes Chemical Corporation of West Lafayette, Indiana, to form Chemtura, headquartered in Philadelphia.[1]

Crompton's ticker symbol on the New York Stock Exchange was CK.


  1. ^ a b c "Historical Timeline". Chemtura Corporation. Archived from the original on 8 July 2014. Retrieved 14 May 2013.

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