Process for manufacturing thermoplastic materials containing inorganic particulates
OwnerDaniel Craig, Jeffrey Elliott +3inventors
InventorsDaniel Craig, Jeffrey Elliott, Michael Kidder, George Perakis, Harmon Ray
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Abstract
Processes are disclosed for treating an inorganic particulate to provide improved dispersibility in a thermoplastic, for example, titanium dioxide as an opacifier or colorant in a polyolefin concentrate, and for producing said pigmented thermoplastic, wherein a surface coating is applied to the particulate which comprises at least one N-acyl amino acid or N-acyl amino acid salt.
Claims10
A process for improving the dispersibility of an inorganic particulate in a thermoplastic comprising applying a surface coating on the particulate through treatment with at least one N-acyl amino acid or salt of an N-acyl amino acid.
A process for manufacturing an inorganic particulate-containing thermoplastic, comprising a) applying a surface coating on an inorganic particulate which comprises at least one N-acyl amino acid or N-acyl amino acid salt, and b) intimately mixing said treated inorganic particulate with a thermoplastic material under temperature conditions wherein the thermoplastic is at least partially melted for the duration of the mixing step.
Dependencies are inferred from the claim text.