Acrylic acid series nucleocapsid polymer emulsion and re-dispersible emulsion powder, and method for producing thereof

Abstract

The invention relates to a crylic acid nucleocapsid polymer emulsion and subdividable emulsion powder and the preparation method thereof. The emulsion is prepared by methacrylic acid alkyl ester, crylic acid alkyl ester, hydroxyalkyl ester, methacrylic acid, N-methylol acrylamide, an emulsifying agent and an initiator through the method of emulsion polymerization. The subdividable emulsion powder is prepared by the crylic acid nucleocapsid polymer emulsion, a protective colloid, and an anticaking agent through the spray method of emulsion. The subdividable emulsion powder of the invention has high fixed content (approximating 100 percent) and can reduce the difficulty of transportation and storage, and can be packed by using paper to reduce the packing cost, moreover, the storage stability is good and the storage period is long, and the subdividable emulsion powder of the invention can not go bad due to the water freezing or volatilization; the invention has the important thing that the subdividable emulsion powder can be rapidly dissolved in water and evenly distributed to repeatedly form the emulsion having the same performance as the primary matrix polymer emulsion, thereby being widely applied to zero VOC dry powder paint, terrace patch mortar, artesian flow flat plateau mortar, wall and floor tile bonding agent, sealed mortar, construction luting powder, plastering material, plastering gypsum, heat insulation and heated board bonding material, concrete interface agent, powder binding agent, powder paint, etc.

Description

technical field [0001] The invention relates to an acrylic core-shell polymer emulsion, a redispersible latex powder and a preparation method thereof. Background technique [0002] With the development of science and technology and the improvement of living standards, people's understanding of environmental protection and sustainable development is getting deeper and deeper. At present, polymer emulsions have been widely used in the coating industry, chemical building materials and industrial solid waste resource utilization. In the commonly used polymer emulsion, the solid content only accounts for about 50%, and contains a large amount of water. A large number of storage tanks are required to store and transport polymer emulsions, and the recycling of these plastic or iron storage tanks also requires a lot of manpower and material resources. This not only increases the cost, but also causes a waste of resources and pollutes the environment. At present, people design to ...

AI Technical Summary

Problems solved by technology

Although a few countries in the world have developed polyvinyl acetate-vinyl "redispersible latex powder" with certain water dispersibility and film-forming ability, due to the limited degree of dispersion, the film-forming performance has not reached the level that can be used as a "dry powder coating". "The degree of film-forming substances; and due to the raw material itself, it determines the characteristics of this redispersible latex powder's poor water resistance and ion stability