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Rockwood to sell rheology additives business to Altana for $635 million

4:54 PM MDT | August 12, 2013 | —Natasha Alperowicz and Vincent Valk

Altana (Wesel, Germany) says it has agreed to acquire the rheology additives, or clay-based additives, business of Rockwood Holdings, for $635 million. The clay-based additives business generated $191.4 million in sales during 2012 and employs about 340 people. It has four manufacturing sites, two in the United States, one in the United Kingdom, and one in Germany. The deal is expected close in the fourth quarter, after which the business will become a part of Altana’s BYK additives and instruments segment. The clay-based additives segment develops and...

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