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Waterborne polyurethane latex emulsion for nylon fabric and preparation method thereof

A water-based polyurethane and nylon fabric technology, applied in dyeing, textile and papermaking, etc., can solve the problems of fastness, elasticity, cold resistance not meeting the requirements, poor film-forming elasticity of water-based acrylic resin, and difficulty in meeting market demand, etc. Good process implementation, good compatibility, the effect of reducing production and transportation costs

Active Publication Date: 2015-10-14
LIAONING FIXED STAR FINE CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

And polyurethane type elastic mucilage emulsion has no report
[0003]Water-based acrylic resin has poor film-forming elasticity, hot stickiness and cold brittleness, and poor washing fastness
The price of organic silicon is high, it is difficult to meet the market demand
[0004] The acrylic glue used for nylon fabrics is not ideal, and the fastness, elasticity and cold resistance cannot meet the requirements

Method used

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  • Waterborne polyurethane latex emulsion for nylon fabric and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] 26.6 parts of hydrogenated diphenylmethane diisocyanate, 8.5 parts of hexamethylene diisocyanate (HDI), 55 parts of polytetramethylene glycol (molecular weight 2000), 40 parts of polycarbonate diol (molecular weight 1000), polyethylene 5 parts of diol (molecular weight 800), 25 parts of acetone, 7 parts of sodium diaminosulfonate (molecular weight 220), 6 parts of isophorone diamine, 7.1 parts of ethylenediamine, 130 parts of deionized water;

[0045] Preparation:

[0046] (1) Prepolymerization reaction: 26.6 parts of hydrogenated diphenylmethane diisocyanate, 8.5 parts of hexamethylene diisocyanate, 55 parts of polytetramethylene glycol (molecular weight 2000), polycarbonate diol (molecular weight 1000 ) is 40 parts, polyethylene glycol (molecular weight: 800) is 5 parts, put into the reaction kettle, heat up to 70-80°C and stir for 1-2 hours;

[0047] (2) Chain extension reaction: Add 25 parts of acetone to the above prepolymer, 7 parts of chain extender sodium dia...

Embodiment 2

[0051] Raw material weight ratio: 30.1 parts of hydrogenated diphenylmethane diisocyanate, 9 parts of hexamethylene diisocyanate (HDI), 70 parts of polytetramethylene glycol (molecular weight 3000), polycarbonate diol (molecular weight 2000) 60 parts, polyethylene glycol (molecular weight 1000) 8 parts, acetone 35 parts, sodium dihydroxysulfonate (molecular weight 550) 10 parts, isophorone diamine 6 parts, triethylene diamine 5.3 parts, deionized water 163.4 parts Part: preparation method is the same as embodiment 1, obtains product, solid content 50.3%.

[0052] This embodiment product is soft to the touch due to polytetramethylene glycol, polycarbonate diol, polyethylene glycol, sodium dihydroxysulfonate molecular weight in the ratio of raw materials; select isophorone diamine and triethylene Diamines jointly extend the chain, have good synergistic effect and good wear resistance.

Embodiment 3

[0054] Raw material weight ratio: 40.5 parts of hydrogenated diphenylmethane diisocyanate, 25.9 parts of hexamethylene diisocyanate (HDI), 50 parts of polytetramethylene glycol (molecular weight 1000), polycarbonate diol (molecular weight 1000) 50 parts, 11 parts of polyethylene glycol (molecular weight 800), 25 parts of acetone, 6 parts of sodium diaminosulfonate (molecular weight 220), 6 parts of sodium dihydroxysulfonate (molecular weight 550), 8 parts of triethylenediamine, 5.1 parts of ethylenediamine, 177.5 parts of deionized water: the preparation method is the same as in Example 1 to obtain a product with a solid content of 50.1%.

[0055] The product of this example is due to the synergistic reaction of diamine sulfonate and dihydroxy sulfonate as raw materials, with soft hand feeling, excellent product performance and good fastness; the proportion of hydrogenated diphenylmethane diisocyanate and hexamethylene diisocyanate is relatively large , The product feels sligh...

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Abstract

The invention provides a waterborne polyurethane latex emulsion for a nylon fabric and a preparation method thereof. The waterborne polyurethane latex emulsion comprises the following raw materials by weight: 20 to 50 of hydrogenated methyl diphenylene diisocyanate, 5 to 35 of hexamethylene diisocyanate, 50 to 70 of polytetramethylene ether glycol, 40 to 70 of polycarbonate glycol, 10 to 25 of polyethylene glycol, 25 to 35 of acetone, 5 to 15 of chain extender, 5 to 20 of micromolecular chain extender and 100 to 300 of deionized water. The preparation method comprises the following steps: prepolymerization; chain extension; and emulsification. The waterborne polyurethane latex emulsion is used for printing of the nylon fabric and has the advantages of soft handle, dryness, high elasticity, good fastness to washing, excellent cold resistance and good compatibility with color paste.

Description

technical field [0001] The invention relates to a water-based polyurethane glue emulsion for textiles and a preparation method thereof, in particular to a water-based polyurethane glue emulsion with high elasticity, softness and high fastness for nylon fabrics and a preparation method. The water-based polyurethane emulsion is thickened and colored to make a glue, which is hand-plate printed on nylon fabrics to achieve a soft and dry feel, excellent dry and wet film and wash fastness, and excellent cold resistance. Background technique [0002] The mucilage emulsions in the market are mainly water-based acrylic resins and silicone resins. And polyurethane type elastic mucilage emulsion has no report. [0003] Water-based acrylic resin has poor film-forming elasticity, hot stickiness and cold brittleness, and poor washing fastness. Silicones are expensive and difficult to meet market demand. [0004] The acrylic glue used for nylon fabrics is not ideal, and the fastness, el...

Claims

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Application Information

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IPC IPC(8): D06P1/52C08G18/76C08G18/73C08G18/66C08G18/48C08G18/44C08G18/32
Inventor 唐丽党瑞东荣星宋明智刘杰
Owner LIAONING FIXED STAR FINE CHEM
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