Method of coloring and molding a shaped thermoplastic resin arti

Details Method of coloring and molding a shaped thermoplastic resin arti Method of coloring and molding a shaped thermoplastic resin arti

1974-08-02

1976-08-31

White, Robert F.

Plastic and nonmetallic article shaping or treating: processes

With severing, removing material from preform mechanically,...

To form particulate product

264328, B29F 100

Patent

active

039780368

ABSTRACT:
Fatty acid amide coated pigments are obtained and used to formulate with uncolored thermoplastic materials. The colors of the pigments are fully developed and extremely high pigment loadings are obtained. The coated pigments are formed by admixing the pigment with melted fatty acid amide; solidifying the material by cooling it; grinding the material; and separating out the fines. The coated pigments particles are compounded with thermoplastic materials by low shear means, such as, injection molding. An improved form of the coated pigments can be obtained by admixing the melted fatty acid amide, and the pigment; extruding the admixture to form a creamy mass; solidifying and forming the creamy mass by passing it through cold and forming rollers; grinding the resultant wafer-like material; and separating out the fines.

REFERENCES:
patent: 3394210 (1968-07-01), Franze
patent: 3706825 (1972-12-01), Hall et al.

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