** Shares of engineering materials maker Rogers Corp ROG.N
tumble 46% to $126.10 in extended trading
** Top pct. loser across U.S. exchanges; set for worst day
ever and lowest level in 2 yrs if losses hold
** Chemicals maker DuPont De Nemours Inc DD.N said it was
scrapping its $5.2 bln buyout of ROG as the companies could not
obtain regulatory clearances in time
** DD up 8.4% at $62; if gains hold, DD is set for its best
day since the deal was announced last year
** ROG stock has lost ~16% YTD through Tuesday's close,
while DD has fallen 27.3%
(Reporting by Ruhi Soni in Bengaluru)
((Ruhi.Soni@thomsonreuters.com
Twitter: https://twitter.com/ruhithere))