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AssigneeFerro Corporation
InventorsSurachai Wimolkiatisak, Dennis L. Hammond, Anthony S. Scheibelhoffer, Allen W. Carlson, Mir L. Ali
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The present invention provides a new and improved method of producing a dustless vinyl halide polymer color concentrate that does not require the formation of a hot melt or the use of wax. The color concentrate comprises a multitude of fine particles which each comprise a vinyl halide polymer resin core and a colorant material shell. The method includes the steps of providing a vinyl halide polymer, providing a colorant material, providing a compatibilizer having a solubility parameter of from about 7 to about 12 (cal/ml).sup.1/2, and mixing the vinyl halide polymer, compatibilizer and colorant material together to yield the dustless concentrate in the form of a vinyl halide resin core surrounded by a shell of the compatibilzer and the colorant material.
A method of producing a dustless, free-flowing vinyl halide polymer color concentrate comprising particles each comprising a vinyl halide polymer resin core and a colorant material shell, said method comprising the steps of:
A method of producing a dustless, free-flowing vinyl halide polymer color concentrate comprising particles each comprising a vinyl halide polymer resin core and a colorant material shell, said method comprising the steps of:
A method of producing a dustless, free-flowing vinyl halide polymer color concentrate comprising fine particles each comprising a vinyl halide polymer resin core and a colorant material shell, said method comprising the steps of:
Dependencies are inferred from the claim text.