C - Chemistry – Metallurgy – 08 – J
Patent
C - Chemistry, Metallurgy
08
J
C08J 3/20 (2006.01) C08J 3/22 (2006.01)
Patent
CA 2155670
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)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 compatibilizer and the colorant material.
Nouveau procédé amélioré de production de concentrés de colorant consistant en un polymère d'halogénure de vinyle exempt de poussière, ne nécessitant pas de formation de fusion ni l'utilisation de cires. Ce concentré comporte une multitude de particules fines dont chacune se compose d'un noyau dudit polymère et d'une enveloppe de colorant. Le procédé comporte les étapes suivantes: 1) se procurer le susdit polymère, le colorant et un agent de compatibilité présentant un taux de solubilité compris entre environ 7 et environ 12 (cal/ml) ?1/2¿; et 2) les mélanger de façon à obtenir un concentré exempt de poussière se présentant sous la forme d'un noyau de résine d'halogénure de vinyle entouré d'une enveloppe d'un agent de compatibilité et de colorant.
Ali Mir L.
Carlson Allen W.
Hammond Dennis L.
Scheibelhoffer Anthony S.
Wimolkiatisak Surachai
Ferro Corporation
Jarzyna Andrew K.
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