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Anti-flooding assistant, preparation method thereof and use thereof

An additive and color-floating technology, used in textiles, papermaking, fiber processing, etc., can solve the problems of shrinkage, pinholes, poor anti-floating effect, and incompatibility between additives and polyurethane. good color effect

Inactive Publication Date: 2010-01-20
HUAFON MICROFIBER SHANGHAI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is to overcome that the existing additives for anti-floating phenomenon are not completely compatible with polyurethane, and the anti-floating effect is not good when the addition amount is small, and shrinkage cavities and pinholes will be formed when the addition amount is large , additives peeling off in advance and other defects, a new anti-floating additive is provided, which has a good anti-floating effect, and has good compatibility with polyurethane resin, and the additive dosage range is wide

Method used

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  • Anti-flooding assistant, preparation method thereof and use thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Embodiment 1 prepares anti-floating auxiliary agent

[0039] The solvent-based polyurethane resin slurry obtained in Reference Example 1 was diluted with a mixed solvent of DMF and MEK (mass percentage DMF:MEK=80:20) to a solid content of 15% and a viscosity of 4 Pa.s. Add 0.1 mol of IPDA and 0.2 mol of cyclohexylamine, stir at 1000 rpm for 10 minutes, add 0.2 mol of IPDI dropwise after stirring evenly, and prepare tetraurea after 15 minutes of dripping, among which IPDA, cyclohexylamine and IPDI The ratio of the total mass of the solvent-based polyurethane resin to the mass of the non-volatile components contained in the solvent-based polyurethane resin slurry was 1:5, and then stirred and reacted at a speed of 1000 rpm for 30 minutes, and the reaction temperature was room temperature 25°C. Tetraurea was prepared, unloaded for use. Take 515g of the sample, slowly add 5g of white carbon black (gas phase) at a stirring speed of 1000 rev / min, stir and disperse for 30min,...

Embodiment 2

[0040] Embodiment 2 prepares anti-floating auxiliary agent

[0041] The operation steps are the same as in Example 1, select 0.2mol of benzylamine, 0.1mol of ethylenediamine and 0.2mol of IPDI to react, and drop IPDI in 15min, wherein the total mass of benzylamine, ethylenediamine and IPDI is mixed with the solvent The mass ratio of the non-volatile components contained in the type polyurethane resin slurry was 1:5, and then stirred at a speed of 1000 rpm for 30 min, and the reaction temperature was room temperature 25°C. The diurea was obtained, and the material was unloaded for use. Take 515g of the sample, slowly add 5g of white carbon black (gas phase) at a stirring speed of 1000 rev / min, stir and disperse for 30min, then use a three-roll mill to grind and disperse 3 times, and use a scraper fineness meter to test the When the fineness of the sample is less than or equal to 5 μm, the material is discharged for use, and sample 2# is obtained. In the obtained samples, poly...

Embodiment 3

[0042] Embodiment 3 prepares anti-floating auxiliary agent

[0043] The operation steps are the same as in Example 1, select 0.2mol of benzylamine, react with 0.2mol of HDI, and finish adding HDI dropwise in 15 minutes, wherein the total mass of benzylamine and HDI is the same as that of non- The mass ratio of the volatile components was 1:5, and then stirred at a speed of 1000 rpm for 30 min, and the reaction temperature was room temperature 25°C. The diurea was obtained, and the material was unloaded for use. Take 515g of the sample, slowly add 5g of white carbon black (gas phase) at a stirring speed of 1000 rev / min, stir and disperse for 30min, then use a three-roll mill to grind and disperse 3 times, and use a scraper fineness meter to test the When the fineness of the sample is less than or equal to 5 μm, the material is discharged for use, and sample 3# is obtained. In the obtained samples, polyurethane, polyurea, silica, BHT, BYK-9565, and PCD accounted for 79.0%, 15....

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Abstract

The invention discloses an anti-flooding assistant, which contains polyurethane resin, polyurea, high-thixotropy solid powder and an organic solvent. The invention also provides a method for preparing the anti-flooding assistant, which comprises the following steps: adding amine into solvent polyurethane resin paste, stirring and uniformly mixing the mixture, dripping isocyanate, and stirring the resulting mixture for reaction for synthesizing polyurea; and adding the high-thixotropy solid powder into a product and allowing the high-thixotropy solid powder to disperse uniformly. The invention also discloses the use of the anti-flooding assistant in coating and coloring of the surface of leather synthesized by using ultrafine fibers. The anti-flooding assistant has dynamic and static anti-flooding performance that is better than that of conventional wetting agent, dispersant and anti-flooding assistant, is complete compatible with a resin system which is the same as the anti-flooding assistant, avoids generating finished product drawbacks when the additive amount increases, simplifies the production of synthetic leathers and facilitates operation.

Description

technical field [0001] The invention relates to an anti-floating additive and its preparation method and application. Background technique [0002] The application of microfiber synthetic leather is divided into two main parts: 1. Suede microfiber synthetic leather, also known as suede microfiber synthetic leather; 2. Surface modified microfiber synthetic leather. Surface modification generally uses polymer resin with colorants and additives, and uses release paper to transfer coating to endow microfibers with various patterns, colors, functions, etc. [0003] The polymer materials for surface coating include: acrylic resin (PA), polyvinyl chloride resin (PVC), polyethylene resin (PE), polyurethane resin (PU), etc. Since polyurethane (PU) has excellent film-forming properties and mechanical properties, it has been paid attention to by people since its birth. PU leather has excellent wear resistance, good tear strength and elongation. At the same time, the leather also has ...

Claims

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Application Information

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IPC IPC(8): D06M15/564D06M13/432D06M11/79C08L75/04C08L75/02C08K5/21C08K3/36C08K3/34
Inventor 邬花元夏佳弟刘国孙向浩王克亮
Owner HUAFON MICROFIBER SHANGHAI
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