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Anti-graffito leather finishing agent and using method thereof

A leather finishing agent, anti-graffiti technology, applied in leather surface treatment, small raw hide/large raw hide/leather/fur treatment, small raw hide/large raw hide/leather hide/fur chemical treatment, etc., can solve the anti-graffiti protection of leather The problem of poor effect, etc., can restore the appearance effect, improve the protection effect, and reduce the effect of graffiti pollution.

Active Publication Date: 2011-08-10
ZHEJIANG SUNLIGHT MATERIAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the current leather finishing agents focus on the appearance and feel, and the protective effect on the anti-graffiti of leather is poor

Method used

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  • Anti-graffito leather finishing agent and using method thereof
  • Anti-graffito leather finishing agent and using method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] 5 parts of hydroxyl polyester resins, 8 parts of hydroxyl-terminated polyurethane resins, and 34.8 parts of polyurethane resins are added to the stirring tank, and then 25 parts of N, N-dimethylformamide, 10 parts of toluene and 10 parts of butanone are added, Stir for 30 minutes; then add 5 parts of silicone-modified acrylic resin, 0.2 parts of dibutyltin dilaurate, 1 part of leveling agent and 1 part of hand feeling agent while stirring, continue stirring for 20 minutes, and filter.

[0014] Mix 100 parts of the first part with 2.8 parts of HDI trimer, and then use the printed construction process to treat the surface of the synthetic leather, and bake it in an oven at 130 ° C for 3 minutes. Then test the anti-graffiti performance of the synthetic leather. The test method is to write on the surface of the anti-graffiti treated leather with an oily marker pen, a ballpoint pen and a neutral pen. After the graffiti marks are completely dry, use a dry cloth and a cloth str...

Embodiment 2

[0016] The distribution ratio of each component is according to the components of Example 2 listed in Table 1, and the first part is prepared according to the preparation method shown in Example 1. Mix 100 parts of the prepared first part with 3.5 parts of HDI biuret, then apply it to the surface of synthetic leather by roller coating, and bake it in an oven at 130°C for 3 minutes. Then test the anti-graffiti performance of synthetic leather, the method of testing is carried out according to the method for anti-graffiti performance test among the embodiment 1, test result is as shown in table 2. The results show that the anti-graffiti effect has reached level 4 or above.

Embodiment 3

[0018] The distribution ratio of each component is according to the components of Example 3 listed in Table 1, and the first part is prepared according to the preparation method shown in Example 1. Mix 100 parts of the prepared first part with 9.5 parts of blocked IPDI trimer, then apply it to the surface of synthetic leather by roller coating, and bake in an oven at 150°C for 4 minutes. Then test the anti-graffiti performance of synthetic leather, the method of testing is carried out according to the method for anti-graffiti performance test among the embodiment 1, test result is as shown in table 2. The results show that the anti-graffiti effect has reached level 4 or above.

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Abstract

The invention designs an anti-graffito leather finishing agent and a using method thereof, relates to the field of leather surface treatment, and solves the technical problem of undesirable anti-graffito effect of the conventional leather. The finishing agent is characterized by consisting of two parts which are stored separately, wherein the first part comprises the following raw material components in percentage by mass: 3 to 30 percent of hydroxyl polyester resin, 3 to 30 percent of hydroxyl-terminated polyurethane resin, 0 to 50 percent of polyurethane resin, 1 to 15 percent of organosilicon-modified acrylic resin, 0.1 to 1 percent of catalyst, 0.5 to 5 percent of aid and the balance of solvent; and the second part is a polyisocyanate curing agent in a molar amount which is 1 to 1.05 times that of hydroxyl in the first part. When the finishing agent is used for treating the surface of leather, the pollution to leather products in use by graffito is relieved effectively, graffito traces can be cleaned easily, and the good appearance of leather is restored.

Description

technical field [0001] The invention relates to the field of leather surface treatment, in particular to an anti-graffiti leather finishing agent and its application method. Background technique [0002] During use, leather is often contaminated by scratches from oily markers, ballpoint pens or gel pens. Once contaminated, it is difficult to remove, which will affect the appearance of the leather. Especially some high-grade light-colored leather products such as bags or sofas need special protection to avoid scratches and pollution from marker pens and ballpoint pens in use. Most of the current leather finishing agents focus on the appearance and feel, and the protective effect on the anti-graffiti of leather is relatively poor. Contents of the invention [0003] The object of the present invention is to provide an anti-graffiti leather finishing agent that not only ensures the appearance effect and feel of leather, but also has a good anti-graffiti protective effect on l...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/06C09D175/08C09D5/00C14C11/00
Inventor 陈华郦向宇戴文琪
Owner ZHEJIANG SUNLIGHT MATERIAL TECH CO LTD
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