초록 ▼

A polyolefin compatable liquid colorant/additive concentrate for molding plastics. The colorants and additives are conventional pigments and additives. The vehicle contains (A) a low molecular weight addition polymer, such as a polybutene, a polystyrene, a poly alpha-methyl styrene/vinyl toluene cop

A polyolefin compatable liquid colorant/additive concentrate for molding plastics. The colorants and additives are conventional pigments and additives. The vehicle contains (A) a low molecular weight addition polymer, such as a polybutene, a polystyrene, a poly alpha-methyl styrene/vinyl toluene copolymer, or an acrylic polymer or copolymer, and (B) an essentially non-volatile solvent for the low molecular weight addition polymer which has a boiling point of at least about 450°F. and which is compatable with the resin to be colored. The liquid concentrate has a Brookfield viscosity between about 1000 and 40,000. The colorant concentrate produces uniform color finished products, without visible streaks or specks. It also eliminates screw slippage.

대표청구항 ▼

A liquid colorant dispersion for plastics comprising: (a) from about 15 percent to about 90 percent by weight of a colorant; (b) from about 5 percent to about 50 percent by weight of a polybutene having an average molecular weight between about 1000 and 3500; and (c) from about 5 percent to about 70

A liquid colorant dispersion for plastics comprising: (a) from about 15 percent to about 90 percent by weight of a colorant; (b) from about 5 percent to about 50 percent by weight of a polybutene having an average molecular weight between about 1000 and 3500; and (c) from about 5 percent to about 70 percent by weight of an essentially non-volatile solvent for the polybutene; wherein the dispersion has a viscosity between about 1,000 and 40,000 centipoises.