Special fluorescent pigment for leather

A fluorescent pigment and leather technology, applied to the surface of paper and PVC, can solve the problems of poor solvent resistance, difficult processing, high cost, etc., and achieve the effects of improving various properties, improving application performance, and strong coloring strength

Active Publication Date: 2013-09-18
WANLONG CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0004] There are disadvantages such as high cost and poor solvent resistance in leather-specific fluorescent pigments with p-toluenesulfonamide and benzomelamine as mat

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Embodiment 1, special fluorescent pigment for leather, raw material is made up of p-toluenesulfonamide, melamine, formaldehyde, polyurethane resin, and its proportioning is p-toluenesulfonamide:melamine:formaldehyde:polyurethane resin=1.0:0.8:0.6:0.3.

[0026] The molecular weight of the polyurethane resin is 3000-5000.

[0027] The preparation process of special fluorescent pigment for leather is:

[0028] 1. Add p-toluenesulfonamide, melamine and formaldehyde in proportion, and keep the temperature constant for 30 to 45 minutes at 80°C to 90°C.

[0029] 2. After the constant temperature is completed, add polyurethane resin, raise the temperature to 130°C-150°C, add basic dye 6GDN, basic dye 11:1, and keep warm for 1-1.5 hours.

[0030] 3. After the constant temperature is completed, the material is cooled and discharged.

[0031] 4. Material crushing and packing.

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PUM

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Abstract

The invention relates to a special fluorescent pigment for leather. The special fluorescent pigment is prepared from the following raw materials: para toluene sulfonamide, tripolycyanamide, formaldehyde and polyurethane resins at a ratio of 1.0:0.8:0.6:0.3. Compared with the prior art, the fluorescent pigment has the following advantages and effects: 1, by using a pigment polymer covered by copolymers such as monomer acrylonitrile and methyl methacrylate, the emulsion stability is improved, the various fastness such as soaping fastness and bleeding fastness can be improved, and the environment pollution is reduced; 2, by using the copolymers such as monomer acrylonitrile and methyl methacrylate, the glass transition temperature of the polymer can be improved, a function of protecting a primary color body is achieved after copolymers such as monomer acrylonitrile are covered, and the sun-proof fastness is improved.

Description

technical field : [0001] The invention relates to the special finishing mainly for the leather surface, and can also be used in the fields of paper surface, PVC and the like. Background technique [0002] 1. The synthetic method of p-toluenesulfonamide-benzomelamine-formaldehyde as matrix resin [0003] 2. The synthetic method of p-toluenesulfonamide-melamine-formaldehyde as matrix resin [0004] Fluorescent pigments for leather based on p-toluenesulfonamide and benzomelamine have the disadvantages of high cost and poor solvent resistance. [0005] Fluorescent pigments for leather based on p-toluenesulfonamide and melamine have the disadvantages of dark color and difficult processing. [0006] According to the above disadvantages, the present invention is specially used on leather by adding polyurethane resin modification method in the manufacturing process of sunlight fluorescent pigment, the shade is particularly bright, the product processing performance is greatly impr...

Claims

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Application Information

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IPC IPC(8): D06P1/41D06P1/58D06P3/32
Inventor 陈权弟
Owner WANLONG CHEM
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