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Polyacrylate-modified polyurethane aqueous coating emulsion with high water pressure resistance and preparation method thereof

A technology of polyacrylate and polyurethane, which is applied in the direction of textiles, papermaking, and fiber treatment, etc. It can solve the problem of unsatisfactory hand feel, cold resistance, fastness, water pressure, unsatisfactory comprehensive performance of polyacrylate emulsion, solvent resistance, poor cold resistance, etc. problems, to achieve the effect of good bonding fastness, increased rigidity, and good washability

Active Publication Date: 2012-04-04
LIAONING FIXED STAR FINE CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, most of the high water pressure-resistant coating adhesives / emulsions for textiles on the market are solvent-based coating adhesives. Harmful substances such as toluene and DMF will be discharged, which will pollute the environment and cause harm to the human body
Water-based polyurethane emulsion used for water pressure resistance of textiles has the advantages of low temperature resistance, good solvent resistance, good elasticity and flexibility, but poor water resistance, poor washing fastness, low mechanical strength, and poor abrasion resistance
The polyacrylate emulsion used for water pressure resistance of textiles has the advantages of high mechanical strength, yellowing resistance, aging resistance, and good water resistance, but poor solvent resistance and cold resistance
The comprehensive properties of the existing water-based polyurethane emulsion and polyacrylate emulsion used for water pressure resistance of textiles are not ideal, and cannot meet the needs of multiple comprehensive properties such as hand feel, cold resistance, fastness, and water pressure.
At present, there is no disclosure of polyacrylate modified polyurethane water-based high water pressure resistant coating emulsion technology for textiles

Method used

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  • Polyacrylate-modified polyurethane aqueous coating emulsion with high water pressure resistance and preparation method thereof
  • Polyacrylate-modified polyurethane aqueous coating emulsion with high water pressure resistance and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Raw material weight ratio:

[0031] (A) isophorone diisocyanate (IPDI) 50, (B) dimethylol butyric acid (DMBA) 6, (C) polybutadiene diol (molecular weight 2000) 40, (D) neopentyl diol Alcohol 6, (E) isophorone diamine 6, (F) triethylamine 4, (G) deionized water 311, (H) styrene 15, (I) butyl acrylate 50, (J) methyl Hydroxyethyl acrylate 3, (K) ammonium persulfate 0.5;

[0032] Preparation:

[0033] Add isophorone diisocyanate (A), dimethylol butyric acid (B), polybutadiene diol (C) and neopentyl glycol (D) into the reaction kettle, and heat up to 70-100°C for reaction 3 hours, then after cooling down to 40-60°C, add butyl acrylate (I), styrene (H), hydroxyethyl methacrylate (J), and keep stirring at 40-60°C for 1 hour, then add three React ethylamine (F) at 40-60°C for 0.5-1 hour, add deionized water (G) to disperse at high speed for 20 minutes, add isophorone diamine (E) and react at 40-60°C for 2-3 hours, then heat up Start to titrate the aqueous solution o...

Embodiment 2

[0036] Raw material weight ratio: (A) isophorone diisocyanate (IPDI) 70, (B) dimethylol butyric acid (DMBA) 7, (C) polybutadiene diol (molecular weight 3000) 50, ( D) neopentyl glycol 6, (E) isophorone diamine 8, (F) triethylamine 4.8, (G) deionized water 240, (H) styrene 30, (I) butyl acrylate 40, (J) hydroxyethyl methacrylate 5, (K) potassium persulfate 0.8; the preparation method is the same as in Example 1, and the product is obtained.

[0037] The product of this embodiment has high water pressure resistance and good washing resistance due to the large amount of styrene in the raw material ratio.

Embodiment 3

[0039] Raw material weight ratio: (A) isophorone diisocyanate (IPDI) 70, (B) dimethylol butyric acid (DMBA) 10, (C) polybutadiene diol (molecular weight 1000) 30, ( D) neopentyl glycol 6, (E) isophorone diamine 5.5, (F) triethylamine 6.8, (G) deionized water 231, (H) styrene 15, (I) butyl acrylate 50, (J) hydroxyethyl methacrylate 10, (K) potassium persulfate 0.5; the preparation method is the same as in Example 1 to obtain the product.

[0040] The product of this embodiment is due to the large amount of dimethylolbutyric acid in the raw material components, the product has strong hydrophilicity, good emulsion state, and good stability; the amount of hydroxyethyl methacrylate is large, and the degree of crosslinking is strengthened. best.

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PUM

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Abstract

The invention discloses a preparation method of a polyacrylate-modified polyurethane aqueous coating emulsion with high water pressure resistance which is used for textile. The emulsion is prepared from isophorone diisocyanate, bis(hydroxymethyl) butyric acid, polybutadiene diol, neopentyl glycol, isophorone diamine, triethylamine, deionized water, styrene, butyl acrylate, hydroxyethyl methacrylate and initiator. The preparation method is simple and convenient, the solid content is 45%, and the prepared emulsion has the advantages of soft handfeel, good cold resistance, solvent resistance andfirmness, high water pressure resistance and aqueous environmental-friendliness.

Description

technical field [0001] The invention relates to a polyacrylate modified polyurethane water-based high water pressure resistant coating emulsion for textile coating and a preparation method, in particular to a polyacrylate modified polyacrylate with soft hand feeling, excellent cold resistance, good fastness and high water pressure resistance Polyurethane water-based high water pressure resistant coating emulsion and preparation method thereof. Background technique [0002] Most of the high water pressure-resistant coating adhesives / emulsions for textiles on the market are solvent-based coating adhesives. The performance of solvent-based coatings is good, but harmful substances such as toluene and DMF will be discharged during use, causing pollution to the environment and cause harm to the human body. The water-based polyurethane emulsion used for water pressure resistance of textiles has the advantages of low temperature resistance, good solvent resistance, good elasticity ...

Claims

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Application Information

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IPC IPC(8): C08F283/00C08G18/75C08G18/69C08G18/65C08G18/34C08G18/32D06M15/21
Inventor 严欣宁唐丽杨文堂荣星樊丽君刘杰李刚孙海娥
Owner LIAONING FIXED STAR FINE CHEM
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