Did Halliburton Buy Baker Hughes Silence on Fracking Chemicals?

It seemed like good news when Baker Hughes, one of the world's largest oilfield services companies, announced in Oct 2014 that it would start disclosing all the chemicals it used in its fracking operation. Now Halliburton, an even larger oilfield services company, is buying Baker Hughes. In a $34.6 billion merger. Or is it a hostile takeover?