Process for manufacturing thermoplastic materials containing inorganic particulates
OwnerDaniel Craig, Jeffrey Elliott +2inventors
InventorsDaniel Craig, Jeffrey Elliott, George Perakis, Michael Kidder
Life of this patent
Estimating the term…
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 deposited on the particulate which comprises one or more of the α,α-dialkyl substituted linear or branched carboxylic acids and the salts thereof.
Claims10
A process for improving the dispersibility of an inorganic particulate in a thermoplastic, comprising depositing a surface coating on the particulate including one or more of the α,α-dialkyl substituted linear or branched carboxylic acids and the salts thereof.
A process for manufacturing an inorganic particulate-containing thermoplastic, comprising a) depositing a surface coating on an inorganic particulate which comprises one or more of the α,α-dialkyl substituted linear or branched carboxylic acids and the corresponding salts of such acids, 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.