abstract |
Disclosed are certain 1,3-2,4-di(substituted arylidene)- and 1,3-2,4-di(substituted heteroarylidene)-D-sorbitols which are useful as clarifying and nucleating additives for crystalline and semi-crystalline polyolefin compositions. Also disclosed are such poly(C 1 -C 8 alpha olefin) compositions containing them. |