BUZZ-Alent: Heavy trading after confirming closing date on Platform deal
** Chemicals maker Alent (LSE: ALNT.L - news) 's shares shares see heavy trading after saying Platform Specialty deal to buy co is expected to close on Dec 1
** More than 3.5x co's 30 day avg vol gone through in the half-hour after co made announcement
** Co's share price marginally down at 500p, just below Platform's 503p/shr offer price
** Alent's shares saw their best day ever in July on deal news, shares have been trading at 460p-502p since (venkateshasoumithri.mamidipudi.thomsonreuters.com@reuters.net)