Friable composition and process
AssigneeContinental Oil Company
InventorsJames E. Yates, Wilfred M. Pinto
Life of this patent
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Abstract
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.degree.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.degree.F, an oil content of not greater than 50 percent by weight and a needle penetration value at 77.degree.F in the range of 1 mm to 20 mm, and said fatty acid being a C.sub.16 -C.sub.24 aliphatic hydrocarbon monocarboxylic acid or mixtures thereof.
Claims5
In an improved process for the extrusion processing of a thermo plastic polymer formulation using extrusion aids the improvement comprising utilizing an extrusion aid prepared by mixing a paraffinic hydrocarbon wax and calcium salt of a fatty acid while heating to a temperature of at least 150.degree.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.degree.F, an oil content of not greater than 50 percent by weight and a needle penetration value at 77.degree.F in the range of 1 mm to 20 mm, and said fatty acid being a C.sub.16 -C.sub.24 aliphatic hydrocarbon monocarboxylic acid or mixtures thereof.
Dependencies are inferred from the claim text.