Modifying agents for polyolefins
 Modifying agents for polyolefins improve the physical and/or optical properties of the polymers and have formula (I): ##STR1## and salts thereof, wherein X, Y, Z, R and R1 are as defined in the specification. 
Minnesota Mining and Manufacturing Company
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Markus A. Kent E. Stephen E. George G. I.
Wicki Nielsen Amos Moore