| 摘要 |
Friable compositions suitable for use as extrusion aids in polymeric extrusion formulations are prepared by a process which comprises mixing a paraffinic hydrocarbon wax and calcium salt of a fatty acid while heating to a temperature of at least 160 DEG C and thereafter cooling to recover a solid, glass-like, friable composition, said paraffinic hydrocarbon wax having a drop melting point of at least 110 DEG F, an oil content of not greater than 50 percent by weight and a needle penetration value at 77 DEG F in the range of 1 mm to 20 mm, and said fatty acid being a C16-C24 aliphatic hydrocarbon monocarboxylic acid or mixtures thereof.
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