This invention relates to a process for preparing a pigmented thermoplastic polymer composition which is useful as a low profile additive composition for thermosetting resins. The process includes the steps of (A) selecting at least on thermoplastic polymer having a refractive index which is within about 0.06 units of the refractive index of the thermosetting resin; (B) preparing a mixture of said thermoplastic polymer and at least one color pigment, dye or mixture thereof under high shear in a high-intensity mixer; and (C) forming a slurry containing said mixture obtained in step (B) in at least one liquid copolymerizable monomer containing at least one CH.sub.2 .dbd.C<group. In a preferred embodiment, at least one surfactant is included in the slurry obtained in step (C) in an amount sufficient to enhance the uniformity of the pigmentation of a cured composite produced from the thermosetting resin composition and a low profile additive composition. Additional pigment can be added to the slurry before the slurry is mixed with the thermosetting resin. The cured composites produced from the thermosetting resin composition and the low profile additive composition of the invention are characterized has having improved uniformity and intensity of color.
本发明涉及一种制备着色热塑性聚合物组合物的过程,该组合物可用作热固性
树脂的低剖面添加剂组合物。该过程包括以下步骤:(A)选择至少一种热塑性聚合物,其折射率在热固性
树脂的折射率内约0.06个单位;(B)在高强度混合器中高剪切下制备所述热塑性聚合物和至少一种颜色
颜料、
染料或其混合物的混合物;和(C)在至少一种含有至少一个CH.sub.2.dbd.C<group的液态共聚单体中形成含有步骤(B)中获得的混合物的浆料。在优选实施例中,在步骤(C)中获得的浆料中包含至少一种表面活性剂,其量足以增强从热固性
树脂组合物和低剖面添加剂组合物制成的固化复合材料的着色均匀性。在将浆料与热固性
树脂混合之前,可以向浆料中添加额外的
颜料。从本发明的热固性
树脂组合物和低剖面添加剂组合物制成的固化复合材料具有改善的均匀性和颜色强度。