阅读说明：本技术 一种用于服装革的水性透感抛光处理剂及其制备方法 (Water-based transparent polishing treatment agent for clothing leather and preparation method thereof ) 是由 陈勇刚 陈霆峰 于 2019-11-29 设计创作，主要内容包括：本发明提供一种用于服装革的水性透感抛光处理剂,该助剂包含以下组分：改性水性聚氨酯透感树脂、助溶剂、去离子水、分散剂、润湿剂、增稠剂、消泡剂和手感剂。通过对原材料和各组分用量的优化以及各组分相互协调、共同作用,抛光后革面通透感佳,层次感强,手感独特。用此种处理剂做出的革光泽自然,色泽清晰,并且不同粒径大小的粒子所产生的雾度使得革面呈现自然的纹路感。(The invention provides a water-based transparent polishing treatment agent for clothing leather, which comprises the following components: modified waterborne polyurethane transparent resin, cosolvent, deionized water, dispersant, wetting agent, thickener, defoamer and hand feeling agent. Through the optimization of the raw materials and the use amount of each component and the mutual coordination and combined action of the components, the polished leather surface has good permeability, strong layering and unique hand feeling. The leather made by the treating agent has natural luster and clear color, and the haze generated by the particles with different particle sizes ensures that the leather surface presents natural texture.)

1. An aqueous transparent feeling polishing treatment agent for clothing leather, which is characterized by comprising the following components: modified waterborne polyurethane transparent resin, cosolvent, deionized water, dispersant, wetting agent, thickener, defoamer and hand feeling agent.

2. The aqueous transparent polishing treatment agent for clothing leather as claimed in claim 1, wherein the ratio of each component is as follows: 30-40 parts of modified waterborne polyurethane permeable resin, 6-16 parts of cosolvent, 35-45 parts of deionized water, 0.3-0.5 part of dispersant, 0.3-0.5 part of wetting agent, 1-1.5 parts of thickener, 0.1-0.2 part of defoamer and 1-2 parts of hand feeling agent.

3. The aqueous transparent polishing treatment agent for clothing leather according to claim 1, wherein the modified aqueous polyurethane transparent resin comprises a first modified aqueous polyurethane transparent resin having a particle diameter in a first range and a second modified aqueous polyurethane transparent resin having a particle diameter in a second range.

4. The aqueous transparent polishing treatment agent for clothing leather as claimed in claim 3, wherein the first particle size range is 30-50nm, and the second particle size range is 110-130 nm.

5. The aqueous transparent polishing treatment agent for clothing leather as claimed in claim 4, wherein the weight ratio of the first modified aqueous polyurethane transparent resin to the second modified aqueous polyurethane transparent resin is 5-15: 100.

6. the aqueous perspective polishing treatment agent for clothing leather according to claim 1, characterized in that the modified aqueous polyurethane perspective resin is prepared by reacting substances comprising the following components: diisocyanate, polyether polyol, hydroxyl polyether glycol chain extender and methyl-phenyl-propylene glycol chain extender.

7. The aqueous sensory polishing treatment agent for clothing leather according to claim 6, wherein the hydroxyl polyether diol chain extender is trihydroxy polyether diol, and the methyl-phenyl-propylene glycol chain extender is 2-methyl-2-phenyl-1, 3-propylene glycol.

8. The aqueous transparent polishing treatment agent for clothing leather as claimed in claim 2, further comprising 5 to 8 parts by weight of matting agent.

9. A process for preparing an aqueous strike-through buffing treatment agent for clothing leather according to any of claims 1 to 8, characterized by comprising the following steps:

(1) weighing the components in proportion;

(2) mixing a part of modified waterborne polyurethane transparent resin, deionized water, a cosolvent and a dispersing agent, and dispersing for a preset time at a high speed;

(3) and adding the rest part of the modified waterborne polyurethane transparent resin, the wetting agent, the thickening agent, the defoaming agent and the hand feeling agent into the dispersed mixture, and dispersing at a high speed until all the substances are uniform.

10. The method according to claim 9, wherein the first part of the modified aqueous polyurethane strike-through resin accounts for 70% of the total modified aqueous polyurethane strike-through resin.

Technical Field

The invention relates to a treating agent for synthetic leather, in particular to a water-based permeable polishing treating agent for clothing leather, and also relates to a preparation method of the treating agent.

Background

At present, the use of synthetic leather products is more and more common, the synthetic leather industry is rapidly developed, and the development of the surface treating agent for the synthetic leather is accelerated. The existing synthetic leather surface treatment mode is various, and the effect style changes thousands: high gloss and high solid, oil skin style, polishing style, crazy horse discoloration, sheep skin and the like. The synthetic leather treated by the prior surface treating agent has the gloss and the transparent feeling which are difficult to meet the increasing demands of consumers, so that a novel treating agent capable of improving the transparent feeling of the surface of the synthetic leather and providing natural gloss and real leather feeling is urgently needed.

Disclosure of Invention

In order to overcome the defects in the prior art, the invention provides an aqueous permeable polishing treatment agent for clothing leather. The assistant can make clothing leather have strong permeability and excellent layering, and leather made by the treating agent has natural luster.

According to an aspect of the present invention, there is provided an aqueous perspective polishing treatment agent for clothing leather, comprising the following components: modified waterborne polyurethane transparent resin, cosolvent, deionized water, dispersant, wetting agent, thickener, defoamer and hand feeling agent.

According to one embodiment of the invention, the ratio of each component is as follows: 30-40 parts of modified waterborne polyurethane permeable resin, 6-16 parts of cosolvent, 35-45 parts of deionized water, 0.3-0.5 part of dispersant, 0.3-0.5 part of wetting agent, 1-1.5 parts of thickener, 0.1-0.2 part of defoamer and 1-2 parts of hand feeling agent.

According to one embodiment of the present invention, the modified aqueous polyurethane sensory resin includes a first modified aqueous polyurethane sensory resin having a particle diameter in a first range and a second modified aqueous polyurethane sensory resin having a particle diameter in a second range.

According to one embodiment of the present invention, the first particle size range is 30-50nm and the second particle size range is 110-130 nm. Preferably, the first particle size is 40nm and the second particle size is 120 nm.

According to one embodiment of the invention, the weight ratio of the first modified waterborne polyurethane transparent resin to the second modified waterborne polyurethane transparent resin is 5-15: 100. preferably, the weight ratio of the first modified waterborne polyurethane transparent resin to the second modified waterborne polyurethane transparent resin is 10: 100.

according to one embodiment of the invention, the modified waterborne polyurethane perspective resin is prepared by reacting materials comprising the following components: diisocyanate, polyether polyol, hydroxyl polyether glycol chain extender and methyl-phenyl-propylene glycol chain extender. The diisocyanate may include one or more of aromatic diisocyanates, aliphatic diisocyanates, such as isophorone diisocyanate, cyclohexyl diisocyanate, and the like. Isophorone diisocyanate is preferred because isophorone diisocyanate has an asymmetric structure, and the synthesized polyurethane material has low crystallinity and better light transmission.

According to one embodiment of the invention, the co-solvent comprises one or more of butyl ether or isopropyl alcohol.

According to one embodiment of the invention, the hydroxyl polyether glycol chain extender is trihydroxy polyether glycol and the methyl-phenyl-propylene glycol chain extender is 2-methyl-2-phenyl-1, 3-propylene glycol. The trihydroxy polyether diol is adopted to enhance the flexibility of the soft segment in the polyurethane, and the hydroxyl in the trihydroxy polyether diol is beneficial to the action of the soft segment and the hard segment of the polyurethane in a hydrogen bond form, so that the compatibility of the soft segment and the hard segment is improved, the microphase separation in the polyurethane is inhibited, and the light transmittance of the material is improved. The methyl-phenyl-propylene glycol can prevent hard segments in polyurethane from crystallizing and improve the light transmittance of the material.

According to one embodiment of the invention, the light extinction powder also comprises 5-8 parts by weight of light extinction powder, and the light extinction powder can be silicon dioxide.

According to another aspect of the present invention, there is provided a method for preparing the above aqueous transparent feeling buffing treatment agent for clothing leather, comprising the steps of:

(1) weighing the components in proportion;

(2) mixing a part of modified waterborne polyurethane transparent resin, deionized water, a cosolvent and a dispersing agent, and dispersing for a preset time at a high speed;

(3) and adding the rest part of the modified waterborne polyurethane transparent resin, the wetting agent, the thickening agent, the defoaming agent and the hand feeling agent into the dispersed mixture, and dispersing at a high speed until all the substances are uniform.

According to one embodiment of the present invention, the first part of the modified aqueous polyurethane resin composition accounts for 70% of the total modified aqueous polyurethane resin composition.

The water-based transparent polishing treatment agent for clothing leather and the preparation method thereof disclosed by the invention can obtain the following beneficial effects:

(1) through the optimization of the raw materials and the use amount of each component and the mutual coordination of the components, the polished leather surface has good permeability, strong layering and unique hand feeling.

(2) The modified waterborne polyurethane transparent resin with the large particle size and the small particle size is adopted, so that the bulk density of particles is increased totally and the roughness of a film is reduced when the treating agent is applied, leather made by the treating agent has natural luster and clear color, and the haze generated by the particles with different particle sizes enables the leather surface to present natural texture and road feeling.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to specific embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

The invention generally provides a water-based transparent polishing treatment agent for clothing leather, which comprises 30-40 parts by weight of modified water-based polyurethane transparent resin, 6-16 parts by weight of cosolvent, 35-45 parts by weight of deionized water, 0.3-0.5 part by weight of dispersant, 0.3-0.5 part by weight of wetting agent, 1-1.5 parts by weight of thickener, 0.1-0.2 part by weight of defoamer and 1-2 parts by weight of hand feeling agent. The cosolvent can adopt one or more of butyl ether or isopropanol.

In one embodiment of the invention, the modified waterborne polyurethane transparent resin comprises the following components in a weight ratio of 5-15: 100 of a first modified waterborne polyurethane clear resin and a second modified waterborne polyurethane clear resin. The particle size of the first modified waterborne polyurethane transparent resin is 30-50nm, and the particle size of the second modified waterborne polyurethane transparent resin is 110-130 nm.

In one embodiment of the invention, the modified waterborne polyurethane perspective resin is prepared by reacting materials comprising the following components: diisocyanate, polyether polyol, hydroxyl polyether glycol chain extender and methyl-phenyl-propylene glycol chain extender. The diisocyanate may include one or more of aromatic diisocyanates, aliphatic diisocyanates, such as isophorone diisocyanate, cyclohexyl diisocyanate, and the like. Isophorone diisocyanate is preferred because isophorone diisocyanate has an asymmetric structure, and the synthesized polyurethane material has low crystallinity and better light transmission.

In one embodiment of the present invention, the hydroxyl polyether glycol chain extender is trihydroxy polyether glycol, the methyl-phenyl-propylene glycol chain extender is 2-methyl-2-phenyl-1, 3-propylene glycol, and the weight ratio of the trihydroxy polyether glycol to the methyl-phenyl-propylene glycol chain extender is preferably 4:1 to 2: 1. the trihydroxy polyether diol is adopted to enhance the flexibility of the soft segment in the polyurethane, and the hydroxyl in the trihydroxy polyether diol is beneficial to the action of the soft segment and the hard segment of the polyurethane in a hydrogen bond form, so that the compatibility of the soft segment and the hard segment is improved, the microphase separation in the polyurethane is inhibited, and the light transmittance of the material is improved. The methyl-phenyl-propylene glycol can prevent hard segments in polyurethane from crystallizing and improve the light transmittance of the material.

The preparation method of the aqueous transparent polishing treatment agent for clothing leather of the present invention is explained in detail by the following specific examples.