A kind of environment-friendly solvent-free foam base material for shoe leather and preparation method thereof

An environment-friendly, solvent-free technology, which is applied in the preparation of the environment-friendly solvent-free foam base material for shoe leather, and the field of environment-friendly solvent-free foam base material for shoe leather, which can solve the gap between shoe leather and low peel strength, etc. problem, to achieve the effect of controllable reaction speed, high peel strength and high peel strength

Active Publication Date: 2016-03-02
XUCHUAN CHEM SUZHOU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] 2. The peel strength of existing solvent-free synthetic leather resins is low. Since shoe leather generally requires a higher peel strength, usually greater than 10kg / 3cm, most of the solvent-free synthetic leather resins currently have low peel strength. Roughly around 5kg / 3cm, there is still a big gap from the requirements of shoe leather

Method used

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  • A kind of environment-friendly solvent-free foam base material for shoe leather and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] The synthesis of environment-friendly solvent-free foaming bottom material for shoe leather comprises the following steps:

[0033] 1. Synthesis of Component A

[0034] The raw materials include the following components by weight: 100 parts of polyether polyols with a molecular weight of 2000, 2 parts of 1,4-butanediol, 0.2 parts of water, and 0.2 parts of dimethoxysiloxane; the polyether polyols are .

[0035] Process: Add polyether polyol, 1,4-butanediol, water, and dimethoxysiloxane to the reactor in sequence, control the temperature of the reactor at 55°C, measure the moisture after stirring for 1.5 hours, and adjust the moisture to pass Afterwards, component A is obtained.

[0036] 2. Synthesis of component B

[0037] The raw materials include the following components by weight: 76.8 parts of polyether polyol with a molecular weight of 2000, and 25.6 parts of isocyanate.

[0038] Process: add isocyanate and polyether polyol to the reaction kettle in sequence, m...

Embodiment 2

[0043] It is basically the same as Example 1, except that the poly(ethylene adipate) butanediol ester diol with the same molecular weight is used in the raw material instead of polyether polyol.

Embodiment 3

[0045] The synthesis of environment-friendly solvent-free foaming bottom material for shoe leather comprises the following steps:

[0046] 1. Synthesis of Component A

[0047] The raw materials include the following components in parts by weight: 100 parts of polyether polyol with a molecular weight of 1000, 3 parts of 1,2-propylene glycol, 0.1 part of water, and 0.5 part of dimethoxysiloxane.

[0048] Process: Add polyether polyol, 1,2-propylene glycol, water, and dimethoxysiloxane to the reactor in sequence, control the temperature of the reactor at 50°C, measure the moisture after stirring for 2 hours, and adjust the moisture to pass the preparation A component.

[0049] 2. Synthesis of component B

[0050] The raw materials include the following components by weight: 103.6 parts of polyether polyol with a molecular weight of 1000, and 51.8 parts of isocyanate.

[0051] Process: add isocyanate and polyether polyol to the reaction kettle in turn, measure the percentage of...

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Abstract

The invention provides a footwear leather environment-friendly type solvent-free foaming base material prepared from a component A and a component B; the component A is prepared from polyester polyol or polyether polyol, a chain extender, a foaming agent and a foam homogenizing agent; the component B is prepared by carrying out a reaction of isocyanate and polyester polyol or polyether polyol. The footwear leather environment-friendly type solvent-free foaming base material has the advantages of simple preparation method, low cost, controllable reaction speeds of the component A and the component B, and high stripping strength.

Description

technical field [0001] The invention belongs to the technical field of chemical products and preparation methods thereof, and in particular relates to an environment-friendly solvent-free foam base material for shoe leather and a preparation method of the environment-friendly solvent-free foam base material for shoe leather. Background technique [0002] In the past 20 to 30 years, China's synthetic leather industry has developed rapidly, and it has become the world's largest synthetic leather production base. The amount of synthetic leather resin used exceeds two million tons per year. Most of the existing synthetic leather resins are solvent-based. Although the recovery rate of solvents continues to increase, solvent pollution and excessive emissions are still problems that cannot be ignored. At the same time, the solvent on the production line also poses a threat to the health of the operators and nearby residents; in addition, in recent years, fires in tanneries have occ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L75/06C08L75/08C08G18/66C08G18/32C08J9/08
Inventor 王质伟吕华波江平
Owner XUCHUAN CHEM SUZHOU
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