CN102995407A - Water-based PU (Polyurethane) tender-skin-feel treating agent for synthetic leather and preparation method of treating agent - Google Patents

Abstract

The invention discloses a water-based PU (Polyurethane) tender-skin-feel treating agent for synthetic leather. The water-based PU tender-skin-feel treating agent comprises water-based PU resin gloss oil, modified wax emulsion, water, water-based amino silicon oil, silica extinction powder, an organic silicon defoamer and an organic silicon flatting agent. The water-based PU tender-skin-feel treating agent for the synthetic leather has the unique properties of noninflammability, safety and environment friendliness as taking water as a solvent, is good in film-forming property, firm in bonding, solvent-resistant in coating, resistant to cold, hydrolysis and thermal ageing, unique in tender skin hand feel, strong in leather feel, delicate in texture and good in air permeability, ensures an excellent matte effect of the treated synthetic leather, guarantees the excellent comprehensive effects of smooth hand feel, waterproof property, wax feel and the like of the synthetic leather adopting the treating agent, and does not change the conventional production process and equipment of the synthetic leather and increase the production cost of synthetic leather products.

Description

Water-based PU skin rejuvenation treatment agent for synthetic leather and preparation method thereof

technical field

The present invention relates to a surface treatment agent for synthetic leather, in particular to a water-based PU skin rejuvenation treatment agent for synthetic leather applied to the post-stage process of synthetic leather, and also relates to the preparation of the water-based PU skin rejuvenation treatment agent for synthetic leather method.

Background technique

As a substitute for natural leather, synthetic leather has the characteristics of convenient processing, uniform quality, and diverse varieties. It makes up for the lack of genuine leather resources and covers almost all areas where genuine leather is used. Compared with genuine leather, synthetic leather can satisfy people's more surface requirements. style requirements. In the field of synthetic leather manufacturing, surface treatment is a technology that has been paid more and more attention, and it is an effective way to increase the added value of products. Surface treatment processes include printing, spraying, direct coating, multi-functional roller coating, etc. Among them, printing is one of the most commonly used processes for surface treatment of synthetic leather by anilox rollers. In addition to changing the color and luster of the leather surface, printing is also used to change the touch of the leather surface, such as oily waxy, powdery waxy, sandy, smooth, making the surface of synthetic leather feel more like real leather, and can also form different textures. surface styles, such as yangbuck effect, nubuck effect, crazy horse effect, etc. However, in the existing water-based PU skin rejuvenation treatment agents for synthetic leather, the treatment effect on synthetic leather with crystal feeling is not obvious, unnatural, and the hand feel is poor. At the same time, the treatment reagents are easy to pollute the environment, and the manufacturing cost is high. The comprehensive treatment effect bad.

At present, the PU skin rejuvenation treatment agents for synthetic leather sold on the market are often solvent-based, which have the following disadvantages:

1. The organic solvent in the solvent-based surface treatment agent will cause the bottom layer of synthetic leather or artificial leather to dissolve, and the treated synthetic leather will not feel good;

2. Organic solvents not only have high cost, high odor, and serious environmental pollution, but also have safety hazards such as flammability and explosion;

3. The overall effect of treating synthetic leather is not good.

Therefore, it is necessary to provide a novel water-based PU skin rejuvenation treatment agent for synthetic leather that overcomes the above-mentioned deficiencies.

Contents of the invention

The object of the present invention is to provide a water-based PU skin rejuvenation treatment agent for synthetic leather that is environmentally friendly and has a good comprehensive treatment effect.

A water-based PU skin rejuvenation treatment agent for synthetic leather of the present invention is realized through the following technical solutions:

A water-based PU skin rejuvenation treatment agent for synthetic leather disclosed by the invention is characterized in that it comprises the following components: water-based polyurethane resin varnish, modified wax emulsion, water, water-based amino silicone oil, silica matting powder, Silicone defoamer, silicone leveling agent.

As a preferred version of the above formula, the ratio of each component of the water-based PU skin rejuvenation treatment agent for synthetic leather provided by the present invention is as follows: 25-35 parts by weight of water-based polyurethane resin varnish, 3-5 parts by weight of modified wax emulsion , 40-50 parts by weight of water, 3-5 parts by weight of water-based amino silicone oil, 3-5 parts by weight of silica matting powder, 1-3 parts by weight of organic silicon defoamer, and 1-3 parts by weight of organic silicon leveling agent.

As a preferred version of the above formula, the ratio of each component of the water-based PU skin rejuvenation treatment agent for synthetic leather provided by the invention is as follows: 30 parts by weight of water-based polyurethane resin varnish, 4 parts by weight of modified wax emulsion, and 45 parts by weight of water Parts, 4 parts by weight of water-based amino silicone oil, 4 parts by weight of silica matting powder, 2 parts by weight of silicone defoamer, 2 parts by weight of silicone leveling agent.

As a preferred version of the above formula, the ratio of each component of the water-based PU skin rejuvenation treatment agent for synthetic leather provided by the invention is as follows: 28 parts by weight of water-based polyurethane resin varnish, 3.2 parts by weight of modified wax emulsion, and 47 parts by weight of water Parts, 3.9 parts by weight of water-based amino silicone oil, 4.5 parts by weight of silica matting powder, 2.3 parts by weight of silicone defoamer, and 1.8 parts by weight of silicone leveling agent.

As a preferred version of the above formula, the ratio of each component of the water-based PU skin rejuvenation treatment agent for synthetic leather provided by the present invention is as follows: 35 parts by weight of water-based polyurethane resin varnish, 3 parts by weight of modified wax emulsion, and 40 parts by weight of water Parts, 3 parts by weight of water-based amino silicone oil, 5 parts by weight of silica matting powder, 3 parts by weight of silicone defoamer, and 1 part by weight of silicone leveling agent.

Another object of the present invention is to provide a method for preparing a water-based PU skin rejuvenation treatment agent for synthetic leather, comprising the following steps:

Step 1 Add water-based polyurethane resin varnish, silica matting powder, modified wax emulsion, water-based amino silicone oil, silicone defoamer, silicone leveling agent, and water according to the formula and stir for 2 hours.

Step 2 Grind the mixture obtained in step 1.

Step 3 Filter the mixture obtained in Step 2.

Step 4 Add the water-based polyurethane thickener in step 3 and stir evenly.

The preparation method of the water-based PU skin rejuvenation treatment agent for synthetic leather provided by the present invention, the proportioning of each component is as follows: 25-35 parts by weight of water-based polyurethane resin varnish, 3-5 parts by weight of modified wax emulsion, 40 parts by weight of water -50 parts by weight, 3-5 parts by weight of water-based amino silicone oil, 3-5 parts by weight of silica matting powder, 1-3 parts by weight of organic silicon defoamer, and 1-3 parts by weight of organic silicon leveling agent.

In the preparation method of the water-based PU skin rejuvenation treatment agent for synthetic leather provided by the present invention, all steps are carried out at normal temperature and pressure.

Due to the adoption of the above technical scheme, the present invention has the following advantages compared with the prior art:

1. The solvent of water-based PU skin rejuvenation treatment agent for synthetic leather is water, which has unique properties of non-combustibility, safety and environmental protection;

2. The components of the water-based PU skin rejuvenation treatment agent are coordinated with each other and work together. The film-forming property is good, the adhesion is firm, the coating is solvent-resistant, cold-resistant, hydrolysis-resistant, and heat-resistant. After treatment with this product, the fog Good surface effect, unique skin rejuvenation feel, strong genuine leather feel, fine texture, breathability, etc. The synthetic leather with this treatment agent has excellent comprehensive effects in terms of hand feel, smoothness, waterproof, waxy feeling, etc.;

3. The water-based PU skin rejuvenation treatment agent is applied to the existing synthetic leather production line without changing the existing synthetic leather production process and equipment, and will not increase the production cost of the synthetic leather product.

Detailed ways

In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

Example 1

A water-based PU skin rejuvenation treatment agent for synthetic leather, comprising the following components: 30 parts by weight of water-based polyurethane resin varnish, 4 parts by weight of modified wax emulsion, 45 parts by weight of water, 4 parts by weight of water-based amino silicone oil, silicon dioxide 4 parts by weight of matting powder, 2 parts by weight of silicone defoamer, and 2 parts by weight of silicone leveling agent.

The preparation method of the above-mentioned water-based PU skin rejuvenation treatment agent for synthetic leather is: at normal temperature and pressure, according to the formula, 30 parts by weight of water-based polyurethane resin varnish, 4 parts by weight of modified wax emulsion, 45 parts by weight of water, and water-based amino silicone oil 4 parts by weight, 4 parts by weight of silica matting powder, 2 parts by weight of silicone defoamer, 2 parts by weight of silicone leveling agent and mix and stir for 2 hours, grind the mixture obtained above, and filter the ground mixture , and add an appropriate amount of water-based polyurethane thickener (5 parts by weight) and stir evenly to obtain the water-based PU skin rejuvenation treatment agent for synthetic leather in Example 1 of the present invention.

The performance indicators of the water-based PU skin rejuvenation treatment agent for synthetic leather disclosed in this example are shown in Table 1.

Table 1

project indicators Test results PH value 6-8 7 Exterior milky white viscous liquid milky white viscous liquid Stability   No precipitation, no discoloration   No precipitation, no discoloration Viscosity (cps/℃) 800-1200 1002 Solid content (%) 21±1 21.4

Stirring, grinding and filtering used in the above preparation process are common methods in this field.

Example 2

A water-based PU skin rejuvenation treatment agent for synthetic leather, comprising the following components: 25 parts by weight of water-based polyurethane resin varnish, 3 parts by weight of modified wax emulsion, 40 parts by weight of water, 3 parts by weight of water-based amino silicone oil, silicon dioxide 3 parts by weight of matting powder, 1 part by weight of silicone defoamer, and 1 part by weight of silicone leveling agent.

The preparation method of the above-mentioned water-based PU skin rejuvenation treatment agent for synthetic leather is: at normal temperature and pressure, according to the formula, 25 parts by weight of water-based polyurethane resin varnish, 3 parts by weight of modified wax emulsion, 40 parts by weight of water, and water-based amino silicone oil 3 parts by weight, 3 parts by weight of silica matting powder, 1 part by weight of silicone defoamer, 1 part by weight of silicone leveling agent and mix and stir for 2 hours, grind the mixture obtained above, and filter the ground mixture , and add an appropriate amount of water-based polyurethane thickener (5 parts by weight) and stir evenly to obtain the water-based PU skin rejuvenation treatment agent for synthetic leather in Example 2 of the present invention.

The performance indexes of the water-based PU skin rejuvenation treatment agent for synthetic leather disclosed in this example are shown in Table 2.

Table 2

project indicators Test results PH value 6-8 6.8 Exterior milky white viscous liquid milky white viscous liquid Stability   No precipitation, no discoloration   No precipitation, no discoloration Viscosity (cps/℃) 800-1200 1125 Solid content (%) 21±1 21.8

Stirring, grinding and filtering used in the above preparation process are common methods in this field.

Example 3

A water-based PU skin rejuvenation treatment agent for synthetic leather, comprising the following components: 35 parts by weight of water-based polyurethane resin varnish, 5 parts by weight of modified wax emulsion, 50 parts by weight of water, 5 parts by weight of water-based amino silicone oil, silicon dioxide 5 parts by weight of matting powder, 3 parts by weight of silicone defoamer, and 3 parts by weight of silicone leveling agent.

The preparation method of the above-mentioned water-based PU skin rejuvenation treatment agent for synthetic leather is: at normal temperature and pressure, according to the formula, 35 parts by weight of water-based polyurethane resin varnish, 5 parts by weight of modified wax emulsion, 50 parts by weight of water, and water-based amino silicone oil 5 parts by weight, 5 parts by weight of silica matting powder, 3 parts by weight of silicone defoamer, 3 parts by weight of silicone leveling agent and mix and stir for 2 hours, grind the mixture obtained above, and filter the ground mixture , and add an appropriate amount of water-based polyurethane thickener (5 parts by weight) and stir evenly to obtain the water-based PU skin rejuvenation treatment agent for synthetic leather in Example 3 of the present invention.

The performance indexes of the water-based PU skin rejuvenation treatment agent for synthetic leather disclosed in this example are shown in Table 3.

table 3

project indicators Test results PH value 6-8 6.2 Exterior milky white viscous liquid milky white viscous liquid Stability   No precipitation, no discoloration   No precipitation, no discoloration Viscosity (cps/℃) 800-1200 853 Solid content (%) 21±1 21.1

Stirring, grinding and filtering used in the above preparation process are common methods in this field.

Example 4

A water-based PU skin rejuvenation treatment agent for synthetic leather, comprising the following components: 28 parts by weight of water-based polyurethane resin varnish, 3.2 parts by weight of modified wax emulsion, 47 parts by weight of water, 3.9 parts by weight of water-based amino silicone oil, silicon dioxide 4.5 parts by weight of matting powder, 2.3 parts by weight of silicone defoamer, and 1.8 parts by weight of silicone leveling agent.

The preparation method of the above-mentioned water-based PU skin rejuvenation treatment agent for synthetic leather is: at normal temperature and pressure, according to the formula, 28 parts by weight of water-based polyurethane resin varnish, 3.2 parts by weight of modified wax emulsion, 47 parts by weight of water, and water-based amino silicone oil 3.9 parts by weight, 4.5 parts by weight of silica matting powder, 2.3 parts by weight of silicone defoamer, 1.8 parts by weight of silicone leveling agent and mix together for 2 hours, grind the mixture obtained above, and filter the ground mixture , and add an appropriate amount of water-based polyurethane thickener (5 parts by weight) and stir evenly to obtain the water-based PU skin rejuvenation treatment agent for synthetic leather in Example 4 of the present invention.

The performance indexes of the water-based PU skin rejuvenation treatment agent for synthetic leather disclosed in this example are shown in Table 4.

Table 4

project indicators Test results PH value 6-8 7.2 Exterior milky white viscous liquid milky white viscous liquid Stability   No precipitation, no discoloration   No precipitation, no discoloration Viscosity (cps/℃) 800-1200 1125 Solid content (%) 21±1 21.7

Stirring, grinding and filtering used in the above preparation process are common methods in this field.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the implementation scope of the present invention; if it does not depart from the spirit and scope of the present invention, any modification or equivalent replacement of the present invention shall be covered by the claims of the present invention. within the scope of protection.

Claims (8)

1. A water-based PU skin rejuvenation treatment agent for synthetic leather, characterized in that it comprises the following components: water-based polyurethane resin varnish, modified wax emulsion, water, water-based amino silicone oil, silica matting powder, organic silicon matting Foaming agent, silicone leveling agent. 2. The water-based PU skin rejuvenation treatment agent for synthetic leather according to claim 1, characterized in that, the proportioning of each component is as follows: 25-35 parts by weight of water-based polyurethane resin varnish, 3 parts by weight of modified wax emulsion -5 parts by weight, 40-50 parts by weight of water, 3-5 parts by weight of water-based amino silicone oil, 3-5 parts by weight of silica matting powder, 1-3 parts by weight of silicone defoamer, 1-3 parts by weight of silicone leveling agent 3 parts by weight. 3. The water-based PU skin rejuvenation treatment agent for synthetic leather according to claim 2, characterized in that, the proportioning of each component is as follows: 30 parts by weight of water-based polyurethane resin varnish, 4 parts by weight of modified wax emulsion , 45 parts by weight of water, 4 parts by weight of water-based amino silicone oil, 4 parts by weight of silica matting powder, 2 parts by weight of silicone defoamer, and 2 parts by weight of silicone leveling agent. 4. The water-based PU skin rejuvenation treatment agent for synthetic leather according to claim 2, characterized in that, the proportioning of each component is as follows: 28 parts by weight of water-based polyurethane resin varnish, 3.2 parts by weight of modified wax emulsion , 47 parts by weight of water, 3.9 parts by weight of water-based amino silicone oil, 4.5 parts by weight of silica matting powder, 2.3 parts by weight of organic silicon defoamer, and 1.8 parts by weight of organic silicon leveling agent. 5. The water-based PU skin rejuvenation treatment agent for synthetic leather according to claim 2, characterized in that, the proportioning of each component is as follows: 35 parts by weight of water-based polyurethane resin varnish, 3 parts by weight of modified wax emulsion , 40 parts by weight of water, 3 parts by weight of water-based amino silicone oil, 5 parts by weight of silica matting powder, 3 parts by weight of silicone defoamer, and 1 part by weight of silicone leveling agent. 6. the preparation method of water-based PU skin rejuvenation treatment agent for synthetic leather according to claim 1, is characterized in that, comprises the following steps: Step 1 Add water-based polyurethane resin varnish, silica matting powder, modified wax emulsion, water-based amino silicone oil, silicone defoamer, silicone leveling agent, and water together and stir for 2 hours; Step 2 grinds the mixture obtained in step 1; Step 3 filters the mixture obtained in step 2; Step 4 Add the water-based polyurethane thickener in step 3 and stir evenly. 7. the preparation method of water-based PU skin rejuvenation treatment agent for synthetic leather according to claim 6, is characterized in that, the proportioning of each component is as follows: water-based polyurethane resin varnish 25-35 parts by weight, modified wax emulsion 3-5 parts by weight, 40-50 parts by weight of water, 3-5 parts by weight of water-based amino silicone oil, 3-5 parts by weight of silica matting powder, 1-3 parts by weight of silicone defoamer, and 1 part by weight of silicone leveling agent -3 parts by weight. 8. The preparation method of the water-based PU skin rejuvenation treatment agent for synthetic leather according to claim 6 or 7, characterized in that all steps are carried out at normal temperature and pressure.