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A kind of freeze-thaw stable type acrylate polymer emulsion and preparation method thereof

A polymer emulsion and acrylate technology, which is applied in the field of freeze-thaw stable acrylate polymer emulsion and its preparation, can solve the problems of long freeze-thaw recovery time, poor thickening ability, poor weather resistance, etc., and achieve freeze-thaw recovery time Short, high thickening efficiency, good freeze-thaw effect

Active Publication Date: 2018-12-28
GUANGZHOU TINCI MATERIALS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, the current freeze-thaw stable acrylate polymer emulsions generally have some shortcomings, such as poor thickening ability, poor transparency, poor weather resistance, long freeze-thaw recovery time, etc.

Method used

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  • A kind of freeze-thaw stable type acrylate polymer emulsion and preparation method thereof
  • A kind of freeze-thaw stable type acrylate polymer emulsion and preparation method thereof
  • A kind of freeze-thaw stable type acrylate polymer emulsion and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Preparation of polymerizable anionic bisamide surfactant: Dry the four-neck flask, stirrer, feeding tube and other instruments at 120°C for 3 hours, take them out and place them in a desiccator, and use them after cooling. Add 17.42g of toluene diisocyanate (TDI) to a four-necked flask with a stirrer and a thermometer, then dropwise add 102.8g of sodium sulfonate polyether (A), react for 2 hours, heat to 40°C under stirring, and add an appropriate amount of Dibutyltin dilaurate was used as a catalyst, and 92.4g of polyether (B) was added dropwise.

[0041] Continue to react for 2h. Then cool to 30° C., add distilled water and stir for 0.5 h, and add distilled water and surfactant solution at a concentration of 30 wt % to obtain a polymerizable bisamide surfactant (C).

[0042]

[0043] n is 20 and m is 20.

[0044] Preparation of alkali-soluble acrylate polymer: Add 1051g deionized water, 48g polymerizable bisamide surfactant (C), 10g sodium bicarbonate into a 2L f...

Embodiment 2

[0047] Preparation of polymerizable anionic bisamide surfactant: Dry the four-neck flask, stirrer, feeding tube and other instruments at 120°C for 3 hours, take them out and place them in a desiccator, and use them after cooling. Add 17.42 g of toluene diisocyanate into a four-neck flask equipped with a stirrer and a thermometer, and then dropwise add 56.8 g of sodium sulfate polyether (A). After reacting for 2 hours, heat to 40° C. under stirring, add an appropriate amount of dibutyltin dilaurate as a catalyst, and then add 61.4 g of polyether (B) dropwise.

[0048] Continue to react for 2h. Then cool to 30° C., add distilled water and stir for 0.5 h. After adding distilled water, the concentration of the surfactant is 30%, that is, a polymerizable bisamide surfactant (C) is obtained.

[0049]

[0050] n is 10 and m is 12.

[0051] Preparation of alkali-soluble acrylate polymer: add 1051g deionized water, 48g polymerizable bisamide surfactant (C), 10g sodium bicarbonate in...

Embodiment 3

[0054] Preparation of polymerizable anionic bisamide surfactant: Dry the four-neck flask, stirrer, feeding tube and other instruments at 120°C for 3 hours, take them out and place them in a desiccator, and use them after cooling. Add 16.82g of hexamethylene diisocyanate (HDI) to a four-necked flask with a stirrer and a thermometer, then dropwise add 135.8g of carboxylic acid sodium salt polyether (A), react for 2 hours and heat to 40°C while stirring. An appropriate amount of dibutyltin dilaurate was added as a catalyst, and 139.2 g of polyether (B) was added dropwise.

[0055] Continue to react for 2h. Then cool to 30° C., add distilled water and stir for 0.5 h. After adding distilled water, the concentration of the surfactant is 30%, that is, a polymerizable bisamide surfactant (C) is obtained.

[0056]

[0057] n is 28 and m is 30.

[0058] Preparation of alkali-soluble acrylate polymer: Add 1038g deionized water, 53g polymerizable bisamide surfactant (C), 12g sodium d...

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Abstract

The invention discloses a freeze-thaw stable acrylate polymer emulsion and a preparation method thereof. The polymer emulsion is obtained by emulsion polymerization of the following components: 6.8-14 wt% of unsaturated carboxylic acid monomer; C1-C5 unsaturated Saturated carboxylic acid ester 14~21.5wt%; Polymerizable anionic bisamide surfactant 3~6.5wt%; Non-polymerizable anionic surfactant 0~0.8wt%; Initiator 0.05~0.1wt%; 0.05-0.25 wt% of the joint agent; 0.4-0.9 wt% of the pH buffering agent; and deionized water in the rest. The acrylate polymer emulsion has the advantages of good suspending ability, strong thickening ability, good transparency, short freeze-thaw recovery time, good freeze-thaw stability and the like.

Description

technical field [0001] The invention relates to a freeze-thaw stable acrylate polymer emulsion and a preparation method thereof, belonging to the field of polymer synthesis. The acrylate polymer emulsion has the advantages of good suspending ability, strong thickening ability, good transparency, short freeze-thaw recovery time, good freeze-thaw stability and the like. Background technique [0002] Acrylate polymer emulsions are mainly used in exterior wall coatings, leather finishing, fabric finishing, adhesives, papermaking, personal care products, household and industrial cleaners, etc.; however, traditional acrylate polymer emulsions generally use water as a solvent. It will freeze and condense at low temperature, and lose its use value. Freeze-thaw instability brings many difficulties to the production, transportation, storage and application of acrylate polymer emulsion products in cold regions (below 0°C). [0003] CN201410023820.2 discloses a preparation method of a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F283/06C08F220/18C08F220/14C08F220/06C08F218/18C08F2/26C08F220/28C08F222/26
CPCC08F283/065C08F220/18C08F220/1802C08F220/281C08F220/1804
Inventor 邓杨佟锐户献雷
Owner GUANGZHOU TINCI MATERIALS TECH
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