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Four-way elastic hydrolysis-resistant super soft protein synthetic leather

A synthetic leather and hydrolysis-resistant technology, which is applied in textiles and papermaking, can solve the problems of limited development and unsatisfactory hydrolysis resistance of synthetic leather, and achieve the effect of long service life

Active Publication Date: 2021-02-02
FUJIAN HUAXIA SYNTHETIC LEATHER CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the hydrolysis resistance of general synthetic leather is not ideal, which limits its further development to some extent.

Method used

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  • Four-way elastic hydrolysis-resistant super soft protein synthetic leather

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0016] The raw materials for the preparation of the supersoft hydrolysis-resistant polyurethane resin include, in parts by weight: 7-10 parts of diisocyanate, 15-20 parts of polyester polyol, 3-8 parts of modified viscose fiber, and 2-5 parts of chain extender , DMF 60-70 parts; its preparation method is to heat polyester polyol, modified viscose fiber, chain extender and part of DMF to 50-60 ° C, stir and dissolve, then add diisocyanate, and heat up to 80-110°C, heat preservation reaction for 1-2h, then lower the temperature to 50-60°C, add the remaining DMF dropwise to adjust the viscosity, and stop the reaction after the viscosity is suitable.

[0017] Wherein, the modified viscose fiber is soaked in 50°C and 10wt% sodium hydroxide solution for 30 minutes, washed with water until neutral, and dried to obtain pretreated viscose fiber; then palmitic acid, Mix acid anhydride with concentrated sulfuric acid, add pretreated viscose fiber after heating to 80°C, stir and heat to 1...

Embodiment 1

[0028] A four-way elastic hydrolysis-resistant supersoft protein synthetic leather, which includes a wet-laid base and a veneer pasted on the wet-laid base, wherein the wet-laid base is made of wet-laid slurry coated on the base cloth The base fabric is a four-way elastic fabric, and the wet-process slurry is made of the following raw materials in parts by weight: 100 parts of supersoft hydrolysis-resistant polyurethane resin, 50 parts of DMF, 2 parts of color paste, and 3 parts of cell regulator , 0.2 part of waterproofing agent.

[0029] The raw materials for the preparation of the supersoft hydrolysis-resistant polyurethane resin include by weight: 10 parts of diisocyanate, 15 parts of polyester polyol, 4 parts of modified viscose fiber, 4 parts of chain extender, and 67 parts of DMF;

[0030] Wherein, the modified viscose fiber is soaked in 50°C and 10wt% sodium hydroxide solution for 30 minutes, washed with water until neutral, and dried to obtain pretreated viscose fiber...

Embodiment 2

[0033] A four-way elastic hydrolysis-resistant supersoft protein synthetic leather, which includes a wet-laid base and a veneer pasted on the wet-laid base, wherein the wet-laid base is made of wet-laid slurry coated on the base cloth The base fabric is a four-way elastic fabric, and the wet-process slurry is made of the following raw materials in parts by weight: 100 parts of supersoft hydrolysis-resistant polyurethane resin, 56 parts of DMF, 2 parts of color paste, and 4 parts of cell regulator , 0.3 part of waterproofing agent.

[0034] The raw materials for the preparation of the supersoft hydrolysis-resistant polyurethane resin include, in parts by weight: 8 parts of diisocyanate, 16 parts of polyester polyol, 3 parts of modified viscose fiber, 5 parts of chain extender, and 68 parts of DMF;

[0035] Wherein, the modified viscose fiber is soaked in 50°C and 10wt% sodium hydroxide solution for 30 minutes, washed with water until neutral, and dried to obtain pretreated visc...

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Abstract

The invention discloses a four-way stretch hydrolysis-resistant supersoft protein synthetic leather, which comprises a wet-laid base and a veneer pasted on the wet-laid base, wherein the wet-laid base is coated on a four-way stretch base cloth The wet-process slurry on the surface is made of ultra-soft hydrolysis-resistant polyurethane resin, DMF, color paste, cell regulator and waterproofing agent as raw materials; the veneer is coated on a release Made of dry-laid veneer paste on paper. The product obtained by the invention is soft and breathable, has the properties of wear resistance, hydrolysis resistance, mildew resistance and the like, has a long service life, and can be processed into earphone sets.

Description

technical field [0001] The invention belongs to the technical field of synthetic leather preparation, and in particular relates to a four-way stretch hydrolysis-resistant supersoft protein synthetic leather. Background technique [0002] Polyurethane (PU) synthetic leather is a kind of polymer material with special properties. It has excellent properties such as wear resistance, flexural resistance, solvent resistance, and oil resistance. It is widely used in sports and leisure shoes, sofas, leather bags, balls, etc. It is an ideal natural leather substitute. However, the hydrolysis resistance of general synthetic leather is not ideal, which limits its further development to a certain extent. Contents of the invention [0003] The object of the present invention is to provide a four-sided elastic hydrolysis-resistant supersoft protein synthetic leather, which is soft, breathable, has properties such as wear resistance, hydrolysis resistance, and mildew resistance, and has...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06N3/00D06N3/14
CPCD06N3/0027D06N3/0097D06N3/145D06N3/146D06N3/147D06N2209/143D06N2209/1635D06N2209/1642D06N2209/1671D06N2209/1685D06N2211/28
Inventor 李华林沈加城胡国强姜棚王春梨
Owner FUJIAN HUAXIA SYNTHETIC LEATHER CO LTD
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