	group trims material sciences msc stake an investor group led by central national gottesman inc a new york investment firm and its executive vice president edgar wachenheim said they cut their stake in material sciences corp to less than five pct in a filing with the securities and exchange commission the group said it sold material sciences common shares between feb and at prices ranging from to dlrs a share leaving it with shares or pct as long as the group s stake remains below five pct it is not required to disclose further dealings in material sciences common stock reuter 
