Prepn and using method of quick drying polyamine agent

A technology of drying agent and polyamine, applied in the field of preparation and application of polyamine quick-drying agent, can solve the problems of water-based paints not drying fast enough, the adverse effects of paint water resistance and wear resistance, and reducing VOC content, etc. Excellent water resistance and abrasion resistance, the effect of improving storage stability

Inactive Publication Date: 2005-09-07
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the early 1980s, water-based paints began to be used to make road signs to replace traditional solvent-based road marking paints. Commonly used water-based road marking paints are mainly based on acrylic anionic emulsions. This type of emulsion system uses water as the dispersion medium , thus significantly reducing the VOC content in the paint system, but a major problem is that the water-based paint does not dry fast enough to meet actual needs
The introduction of acidic groups into such water-soluble amine-containing polymers can improve the storage stability of emulsions and coatings, but the use of a large amount of water-soluble polyamines and the presence of hydrophilic acidic groups will affect the The water resistance, abrasion resistance and other properties of the coating will be adversely affected

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Under a nitrogen atmosphere, 41.4 grams of deionized water, 1.56 grams of acetic acid, and 0.6 grams of 0.15% sodium bisulfite solution were added to the reactor, and the temperature was raised to 75°C. Then the monomer system consisting of 18 grams of dimethylaminoethyl methacrylate, 1.9 grams of methacrylic acid and 0.1 grams of N-methylolacrylamide; acetic acid solution (0.03 g of acetic acid dissolved in 2.5 g of deionized water); Ammonium sulfate solution (0.5g of ammonium persulfate dissolved in 5g of water); sodium bisulfite solution (0.25g of sodium bisulfite dissolved in 5g of water) was added dropwise to the reactor from an independent dropping funnel within 2 hours , react at 75°C for 30 minutes, add ammonium persulfate solution (0.05g ammonium persulfate dissolved in 2.5g water) and sodium bisulfite solution (0.025g sodium bisulfite dissolved in 2.5g water) successively, and continue the reaction for 1 hour , down to room temperature, and adjust the pH value...

Embodiment 2

[0021] Dimethylaminoethyl methacrylate 15g, hydroxyethyl methacrylate 3g, a monomer system composed of methacrylic acid 2g, other processes are the same as in Example 1.

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PUM

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Abstract

The present invention relates to the preparation and usage of polyamine quick drying agent for water-thinned anionic latex paint. The preparation process includes the following steps: free radical polymerization of water solution of mixture monomer, acid as catalyst, water soluble salt redox pair as initiator and deionized water; and addition of a certain amount of volatile alkali to regulate pH value to 7-11 to obtain polyamine quick drying agent in non-ionic state. Owing to that proper amount of cross-linking structure is introduced into the polyamine quick drying agent, the paint with the polyamine quick drying agent has not only quick-drying characteristic, but also excellent storage stability, water resistance and wear resistance. The quick drying polyamine agent is ued in compounding water-base road marking paint.

Description

technical field [0001] The invention relates to a method for preparing and using a polyamine quick-drying agent for water-based latex paint. Background technique [0002] In recent years, with the enhancement of people's awareness of environmental protection and the improvement of environmental protection regulations, most countries have stricter restrictions on the use and emission of volatile organic compounds (VOC) in coatings. People use different technologies to reduce VOC in coating systems. use and emissions. Water-based paint is one of the effective means to reduce VOC content. As the main variety of water-based paint, latex paint has been commercialized for more than 50 years. Because of its low toxicity and non-combustibility, fast film formation, convenient construction and good air permeability And many other advantages and can meet the requirements of environmental protection, so it has been developed rapidly and widely used in various ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F220/02C09F9/00
Inventor 杨慕杰刘玉阳
Owner ZHEJIANG UNIV
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