Environment-friendly PU leather

An environmentally friendly, water-based polyurethane technology, applied in the field of PU leather, can solve problems such as harming the human body, harming the human body, polluting the environment, etc., achieving good moisture permeability and air permeability, and improving the effect of firmness.

Inactive Publication Date: 2015-02-25
ZHEJIANG JINSHANG SYNTHETIC LEATHER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In addition, oleoresin contains a large amount of organic solvents, which are also poisonous and harmful. They not only endanger the human body and po

Method used

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  • Environment-friendly PU leather

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Example Embodiment

[0012] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0013] like figure 1 As shown, the present invention includes a base fabric layer 1 on which a primer layer 2 composed of cationic water-based polyurethane is compounded, and the primer layer is coated with an adhesive layer composed of anionic water-based polyurethane. Layer 3, a middle coating layer 4 composed of cationic water-based polyurethane is compositely arranged on the adhesive layer, and a water-based polyurethane surface layer 5 is compositely arranged on the middle coating layer. The cationic waterborne polyurethane is a hydroxyl silicone oil-modified cationic waterborne polyurethane, and the cationic waterborne polyurethane contains polydimethylsiloxane toluene carbamate. The base fabric layer 1 is made of sea-island nylon superfine fibers with a fineness of 5-7 denier and impregnated with polyurethane slurry. The anionic wat...

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Abstract

The invention discloses environment-friendly PU leather. The environment-friendly PU leather comprise a base cloth layer, wherein a base coat made of cationic type waterborne polyurethane is compounded on the base cloth layer, the base coat is coated with a bonding layer made of anionic type waterborne polyurethane, a floating coat made of cationic type waterborne polyurethane is compounded on the bonding layer, and a waterborne polyurethane surface layer is compounded on the floating coat. The environment-friendly PU leather has the good air and water vapor permeability properties, and therefore, the using comfort of the environment-friendly PU leather is improved.

Description

technical field [0001] The invention relates to a PU leather. technical background [0002] Synthetic leather usually uses oleoresin and heavy metal elements in the tanning process, and oleoresin generally contains 0.5-2.5% isocyanate residues. Isocyanate is very toxic. During production and application, these substances are harmful to operators. In other words, it is the source of poison and the deadly substance you come into contact with. In addition, oleoresin contains a large amount of organic solvents, which are also poisonous and harmful. They not only endanger the human body and pollute the environment during the production process, but also remain in the gaps of the leather, and their products are also harmful to the human body. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide an environmentally friendly PU leather, which does not contain toxic resins, organic solvents and heavy metal elements, is more gr...

Claims

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Application Information

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IPC IPC(8): D06N3/14B32B27/02B32B27/04B32B27/12B32B27/40B32B7/12
CPCD06N3/14B32B7/12B32B27/02B32B27/04B32B27/12B32B27/40
Inventor 田树松
Owner ZHEJIANG JINSHANG SYNTHETIC LEATHER
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