Self-thickening pure acrylic latex used in art paints, and preparation method thereof

Abstract

The invention provides a self-thickening pure acrylic latex used in art paints, and a preparation method thereof. The self-thickening pure acrylic latex is prepared from 45-55% of water, 40-48% of polymerizing monomers, 0.2-1.8% of a functional cross-linking agent, 2-10% of an emulsifier, and 0.2-1% of an initiator. The pure acrylic latex is obtained through polymerization. Specifically, under a temperature of 74 to 85 DEG C, the polymerizing monomers are used in polymerization, and a partial cross-linking reaction is carried out, such that an emulsion, which is the pure acrylic latex, is obtained. The polymer contains hydrophilic carboxy. Major molecular structures of the polymer are linearly distributed. The pure acrylic latex is a green and environment-friendly product, and is mainly used as adhesives and functional film-forming substrates in acrylic paints and engraving paints. The pure acrylic latex provided by the invention is characterized in high adhesive force, excellent tensile strength, good accumulation capacity, high yield strength, high pseudo-plasticity, high aging resistance and high light resistance.

Description

technical field [0001] The invention relates to a raw material for art paint, in particular to a self-thickening pure acrylic latex for paint used on cotton, hemp, polyester or rayon canvas or drawing board and a preparation method thereof. Background technique [0002] Pure acrylic latex can be used as a binding medium or a functional film-forming base in art paints. At present, the emulsions used in domestically produced paints are all filled with special emulsions for interior or exterior wall coatings in the construction industry. The requirements for interior or exterior wall coatings are excellent scrub resistance, chalking resistance, water and alkali resistance, Abrasion-resistant, flat and smooth. The art painting pigments require good stacking plasticity, elasticity, firmness, adhesion, light fastness, and covering power. Therefore, the emulsion is one of the key raw materials for the final quality of painting pigments. [0003] Specifically, the main difference...

AI Technical Summary

Problems solved by technology

Therefore, emulsions for architectural coatings obviously cannot meet the special requirements of art paints for emulsions.

Moreover, as the main raw material of acrylic paint, emulsion accounts for more than half of the entire pigment composition. However, there is no professional company in China that produces emulsion for art paints.

At present, most of the art paint factories in China can only use the emulsion for paint as the main material, highlight the key performance, give up the secondary performance, and simulate the pure acrylic emulsion for art paint through a variety of different performance matching methods to realize the production of acrylic paint. The stability and other properties of its emulsion can not really meet the requirements of art paints

Most of the foreign art paint manufacturers use the so-called general-purpose pure acrylic latex produced by famous brand companies such as Rohm and Haas as the base material, and add thickeners, leveling agents and other thixotropic enhancers to prepare more suitable art paints. The pure acrylic latex in the industry, but so far there is still no green and environmentally friendly art paint with self-thickening pure acrylic latex on the market

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