High-pigment-content color master batch as well as preparation method and application thereof

Abstract

The invention discloses a high-pigment-content color master batch as well as a preparation method and application thereof. The color master batch comprises the following components in parts by mass: 50-75 parts of a carrier; 20 to 45 parts of a self-dispersing pigment; 1-5 parts of an auxiliary agent; the preparation method of the self-dispersing pigment comprises the following steps: adding 1-2 parts by mass of a surfactant A and 1-2 parts by mass of a surfactant B into 50-75 parts by mass of water, uniformly mixing, adding 20-45 parts by mass of a pigment, grinding, and drying to obtain the self-dispersing pigment. The preparation method comprises the following steps: uniformly mixing the carrier, the auxiliary agent and the self-dispersing pigment, and granulating by an extruder to obtain the color master batch with high pigment content. The color master batch is good in dispersing performance, can be well dispersed in polyester and is good in compatibility with the polyester; and the pigment concentration in the color master batch is high, the addition amount during melt spinning is small, and the influence on polyester is small.

Description

technical field [0001] The invention belongs to the technical field of fine chemicals, and in particular relates to a color masterbatch with high pigment content and a preparation method and application thereof. Background technique [0002] Polyester is a polymer obtained by polycondensation of polyacids and polyols, mainly polyethylene terephthalate, which has excellent fiber-forming properties, creep resistance, abrasion resistance, heat resistance, and Corrosion, electrical insulation and other properties, widely used in fiber, packaging, engineering plastics and other fields. In my country, synthetic fibers containing more than 85% of polyethylene terephthalate components are called polyester fibers, and the trade name is polyester. After being stretched and shaped during the spinning process, polyester fibers are neatly arranged in linear chains, with high crystallinity, good orientation, small inter-molecular gaps, and difficult penetration of dyes. There are no hydr...

AI Technical Summary

Problems solved by technology

[0005] However, the existing masterbatch pigments prepared from common commercial pigments are unevenly distributed in the polyester carrier, and the compatibility between the pigment and the polyester carrier is poor, resulting in easy clogging of the filter during the polyester fiber spinning process. machine and spinneret hole, the prepared colored polyester fiber has uneven color and poor washing fastness

Surface modification of pigments is a common method for improving the performance of color masterbatches; for example, U.S. Patent No. 8,124,672 introduces a method for preparing self-dispersing pigments containing carboxylate-based water-soluble anionic surfactants. The self-dispersing Pigments are mainly used to prepare color masterbatches for plastics; U.S. Patent US7459017 introduces a method for preparing self-dispersing pigments that can be dispersed by simple stirring. diameter, and then dried into granules to obtain self-dispersing pigments; in this method, the alkyne dispersant accounts for 5-40% of the pigment mass, and the manufacturing cost is relatively high

However, the self-dispersing pigments prepared by the above method have not yet been reported to be used for the preparation of high-pigment content fiber masterbatches.

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