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Organic pigment water-based color paste used for synthetic leather coloring and preparation method thereof

A technology of organic pigments and water-based color pastes, applied in the direction of pigment pastes, etc., can solve the problems of undisclosed synthetic leather water-based color pastes, and achieve high tinting strength and wet rubbing fastness

Active Publication Date: 2014-09-10
常熟世名化工科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the prior art does not disclose the method of surface modification of organic pigment particles and the preparation of synthetic leather water-based color paste with modified pigments to solve the compatibility of other components of synthetic leather and pigment particles. The wet rubbing fastness of synthetic leather and the technical problem of preventing pigment migration during the coloring process of surface synthetic leather

Method used

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  • Organic pigment water-based color paste used for synthetic leather coloring and preparation method thereof
  • Organic pigment water-based color paste used for synthetic leather coloring and preparation method thereof
  • Organic pigment water-based color paste used for synthetic leather coloring and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1 to 5

[0037] Modifier used in embodiments 1 to 5 has the structure of general formula (I):

[0038]

[0039] Wherein, in modifier A, m is 5, n is 6, A is the residue after the reaction between 4-hydroxyethylimidazole and isocyanate group, R is the part except isocyanate group in toluene diisocyanate; modified In agent B, m is 20, n is 3, A is the residue after the reaction of 2-amino-4-picoline and isocyanate group, R is the residue of isocyanate group removed from diphenylmethane-4,4'-diisocyanate The part outside the group; in the modifier C, m is 10, n is 8, A is the residue after the reaction of nonylphenol and isocyanate group, R is the part except the isocyanate group in toluene diisocyanate; modified In agent D, m is 15, n is 5, A is the residue after the reaction between octylphenol and isocyanate groups, and R is the part of diphenylmethane-4,4'-diisocyanate except the isocyanate groups.

Embodiment 1

[0041] In 1200 grams of toluene, add 400 grams of pigment red 170 and stir and mix for 50 minutes to obtain a premixed slurry, then add 20 grams of modifier A to the premixed slurry, stir for 50 minutes, and then grind for 20 minutes through a three-roll mill Minutes later, the milled slurry was filtered and vacuum dried to obtain modified Pigment Red 170.

Embodiment 2

[0043] In 2000 grams of toluene, add 400 grams of pigment red 254 and stir and mix for 30 minutes to obtain a premixed slurry, then add 8 grams of modifier B to the premixed slurry, stir for 40 minutes, and then grind for 30 minutes through a three-roll mill Minutes later, the milled slurry was filtered and vacuum dried to obtain modified Pigment Red 254.

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PUM

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Abstract

The invention relates to an organic pigment water-based color paste used for synthetic leather coloring and a preparation method of the organic pigment water-based color paste. The organic pigment water-based color paste used for synthetic leather coloring comprises modified organic pigments, a wetting agent, a dispersing agent, deionized water, a humectant, a pH value conditioning agent, a mould-proof bactericide and the like, and the organic pigment water-based color paste is prepared through dispersing, grinding, filtering and defoaming. The prepared organic pigment water-based color paste used for synthetic leather coloring has the advantages of being high in tinting strength and wet rubbing fastness and avoiding pigment migration in the coloring process and therefore is particularly suitable for the field of wet method synthetic leather coloring.

Description

technical field [0001] The invention belongs to the technical field of fine chemicals. Specifically, the invention relates to an organic pigment water-based color paste for synthetic leather coloring and a preparation method thereof. Background technique [0002] With the development of human society, the contradiction between supply and demand of natural leather supply and consumer demand has become more and more prominent. In order to solve the shortage of natural leather and meet the growing demand of consumers for various clothing and decorative fabrics, different The manufacture of natural leather substitutes from chemical raw materials has gradually become an important industry; among them, polyurethane synthetic leather has become one of the best choices to replace natural leather due to its advantages of wear resistance, cold resistance, good hand feeling, aging resistance, moisture permeability and breathability. First, it has been widely used in clothing, shoemakin...

Claims

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Application Information

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IPC IPC(8): C09D17/00
Inventor 吕仕铭伍金平梅锦岗梅成国胡正青
Owner 常熟世名化工科技有限公司