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Redispersable emulsion powder-modified antiblocking agent, preparation method thereof and application thereof

A technology of redispersing latex powder and anti-caking agent, which is applied in the field of redispersible latex powder modified anti-caking agent, which can solve the problems of no caking, affecting the performance of rubber powder, and the shelf life of rubber powder, so as to achieve stable products Quality, improve the effect of anti-caking ability

Active Publication Date: 2010-09-08
HUAWEI TEHCHNOLOGIES CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Since the redispersible latex powder is a process in which latex powder is produced by drying the emulsion, and then converted into emulsion during use, it is required that the produced latex powder should not have agglomeration during transportation and storage, so as to facilitate the latex powder Redispersion in the mortar ensures that the application performance of the rubber powder in the mortar is close to that of the emulsion. At present, various inorganic mineral powders are mainly used as anti-caking agents such as: talcum powder, diatomaceous earth, calcium carbonate, kaolin, etc. , these inorganic mineral powders have played a very good role in the production of redispersible latex powder, but due to various natural environments and human influences such as environment, transportation, preservation, etc. There are different degrees of agglomeration under pressure or after a long period of storage, which affects the performance of rubber powder in cement mortar and the shelf life of rubber powder

Method used

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  • Redispersable emulsion powder-modified antiblocking agent, preparation method thereof and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] 100 parts of anhydrite powder (1000 mesh), 3 parts of stearic acid, 0.5 part of a monoalkoxyphthalate coupling agent, and 3 parts of 3-chloro-2-hydroxypropyltrimethylammonium chloride.

[0022] The preparation method is as follows: Add 100 parts of anhydrite (1000 mesh) into the mixing reactor, heat up to 75°C, add 3 parts of molten stearic acid, stir for 30 minutes (speed 50 rpm), and then add phthalic acid Ethanol solution of ester coupling agent, in the ethanol solution containing phthalate coupling agent, the weight content of phthalate coupling agent is 50%, continue stirring for 30 minutes, and finally add 3-chloro-2-hydroxypropyl trimethyl 3 parts of ammonium chloride, and then stirred for 60 minutes to make the finished product.

Embodiment 2

[0024] Anhydrite powder (1100 mesh) 100 parts, stearic acid 5 parts, monoalkoxyphthalate coupling agent 1 part, 3-chloro-2-hydroxypropyltrimethylammonium chloride 4 parts. .

[0025] The preparation method is as follows: add 100 parts of anhydrite (1100 mesh) into the mixing reaction kettle, heat up to 80°C, add 5 parts of molten stearic acid, stir for 30 minutes (speed 40 rpm), and then add phthalic acid 1 part of ester coupling agent, in the ethanol solution containing phthalate coupling agent, the weight content of phthalate coupling agent is 40%, continue stirring for 30 minutes, and finally add 3-chloro-2-hydroxypropyl trimethyl 4 parts of ammonium chloride, and then stirred for 60 minutes to make the finished product.

Embodiment 3

[0027] Anhydrite powder (1200 mesh) 100 parts, stearic acid 4 parts, monoalkoxy phthalate coupling agent 1.5 parts, 3-chloro-2-hydroxypropyltrimethylammonium chloride 5 parts.

[0028] The preparation method is as follows: add 100 parts of anhydrite (1200 mesh) into the mixing reaction kettle, heat up to 85°C, add 4 parts of molten stearic acid, stir for 30 minutes (speed 60 rpm), and then spray phthalate 1.5 parts of ester coupling agent (diluted with 1:1 alcohol), continue to stir for 30 minutes, and finally spray 5 parts of 3-chloro-2-hydroxypropyltrimethylammonium chloride, and stir for 60 minutes to obtain finished product.

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Abstract

The invention discloses a redispersable emulsion powder-modified antiblocking agent, a preparation method thereof and application thereof. The modified antiblocking agent comprises the following components based on parts by weight: 100 parts of anhydrite, 3-5 parts of fatty acid, 0.5-1.5 parts of titanate coupling agent and 3-5 parts of cation etherifying agent. The redispersable emulsion powder-modified antiblocking agent can be used for the redispersable emulsion powder. The invention compositely modifies the anhydrite powder with the fatty acid and the titanate coupling agent, so that the redispersable performance of the emulsion powder in cement plaster can not be influenced, thereby improving the antiblocking performance of the emulsion powder, and stabilizing the quality of the product.

Description

technical field [0001] The invention relates to a redispersible latex powder modified anti-caking agent. Background technique [0002] Redispersible latex powder is the main additive of new material cement dry powder mortar. It has been widely used in various building materials such as external wall insulation, paint, floor mortar, and polymer cement-based waterproof coating. [0003] Since the redispersible latex powder is a process in which latex powder is produced by drying the emulsion and then converted into emulsion during use, it is required that the produced latex powder should not have agglomeration during transportation and storage, so as to facilitate the latex powder Redispersion in mortar ensures that the application performance of rubber powder in mortar is close to that of emulsion. At present, various inorganic mineral powders are mainly used as anti-caking agents such as talcum powder, diatomaceous earth, calcium carbonate, kaolin, etc. , these inorganic mi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08K9/04C08K3/30C08L33/02C08L31/04C08L25/10C08L23/08C04B24/26
Inventor 施晓旦郭和森王养臣
Owner HUAWEI TEHCHNOLOGIES CO LTD
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