AZ Electronic Materials plc (LSE: AZEM) is a British specialty chemicals company.
It is listed on the London Stock Exchange.
The Company was established in the 1950s as a division of Hoechst (now Sanofi-Aventis).
The name of the company is derived from the organic compound diazo.
In 1997 it was acquired by Clariant, a Swiss specialty chemicals business and in 2004 it was bought by funds controlled controlled by the Carlyle Group.
Vestar Capital Partners took a stake in the company in 2007.
In October 2010 it was first listed on the London Stock Exchange.