Non-dusting coloring agent and method of manufacture

Details Non-dusting coloring agent and method of manufacture Non-dusting coloring agent and method of manufacture

1977-01-10

1978-09-26

Rutledge, L. Dewayne

Compositions: coating or plastic

Materials or ingredients

Miscellaneous

106288Q, 106308Q, 260 4214, 427384, 427401, C09C 308

Patent

active

041167112

ABSTRACT:
A non-dusting, particulate coloring agent for plastics and the like is prepared from a finely divided pigment and an organic binder comprising a solid hexahydric alcohol with little or no affinity for water and a melting point within the range of 60.degree. to 200.degree. C. The finely divided pigment and binder are blended and cast with the aid of an aqueous carrier medium, and then heated to form a solid layer which can be broken up into flake-like particles or chunks. These flakes or chunks are not agglomerated or pelletized pigments in the usual sense of the term. The pigment in the flakes is, apparently, bound up in a solid suspension comprising an adherent film or matrix.

REFERENCES:
patent: 2427238 (1947-09-01), Swart
patent: 2882177 (1959-04-01), Newton et al.
patent: 3353974 (1967-11-01), Trimble et al.
patent: 3436241 (1969-04-01), Durrant
patent: 3778288 (1973-12-01), Ridge et al.

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