Melt dyeing of polyethylene with indigo
AssigneeBuffalo Color Corporation
InventorsMalcolm K. Orloff, LeRoy A. White
Life of this patent
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Abstract
A composition comprising polyethylene having from about 0.002 to about 1 weight percent of indigo dye uniformly melt dispersed therein. The average particle size of the dispersed indigo being less than about 1 micron. And the process for coloring polyethylene which comprises blending indigo into melted polyethylene at a concentration of from about 0.002 to about 1 percent by weight of polyethylene until a uniform dispersion is obtained.
Claims14
A composition comprising polyethylene having from about 0.002 to about 1 weight percent of indigo dye uniformly melt dispersed therein, the average particle size of said dispersed indigo being less than about 1 micron.
A process for coloring polyethylene which comprises blending indigo into melted polyethylene at a concentration of from about 0.002 to about 1 percent by weight of melted polyethylene until a uniform dispersion is obtained.
Dependencies are inferred from the claim text.