Phase-controlled film-forming styrene-acrylic paint emulsion and preparation method
A technology of emulsion and paint, applied in the direction of coating, etc., can solve the problems of small volume concentration of pigment, poor color development, poor weather resistance, etc., and achieve the effect of solving the problem of difficult balance between stain resistance and low temperature flexibility, and small particle size
Active Publication Date: 2016-01-20
HENGSHUI XINGUANG CHEM
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Problems solved by technology
[0007] The purpose of the present invention is to solve the problems of poor weather resistance, low pigment volume concentration, poor pigment bearing capacity, poor color development and poor rain mark resistance of the current styrene-acrylic paint emulsion used in building interior and exterior wall coatings. New design and system research for paint emulsion
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[0165] Ⅰ Preparation of seed emulsion
[0166] (1) Pre-emulsification Add metered deionized water into a 5000ml three-neck flask, start stirring, add metered emulsifier, start adding metered monomer dropwise after 15 minutes, and continue high-speed stirring to emulsify for about 1 hour;
[0167] (2) Polymerization Add deionized water to a 1000ml four-neck flask equipped with stirring, reflux condenser, thermometer and constant pressure dropping funnel, start stirring, add the measured bottom emulsifier, when the temperature rises to 85°C, add the measured Initiator aqueous solution, after the temperature reaches the highest level and stabilizes for 2 minutes, start to add the pre-emulsion solution and the initiator aqueous solution dropwise. During the dropping, the temperature is controlled at 86-88°C, and the total dropping time is controlled at 90-100 minutes; After the dropwise addition, keep warm for 1h;
[0168] (3) Cool down to below 40°C and add measured emulsifiers,...
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Abstract
The invention relates to a preparation method of styrene-acrylate copolymer painting emulsion for elastic painting of inner and outer walls of a building. The preparation of styrene-acrylate copolymer painting emulsion comprises the preparation method of styrene-acrylate seed emulsion and the preparation method of painting emulsion and the styrene-acrylate copolymer painting emulsion mainly comprises styrene, acrylate, silane coupling agent, emulgator, initiator, defoamer, pH adjusting agent, molecular weight regulator and water. By utilizing the strong surface effect of organic nano particles and designability of the distribution of inner and outer polymers of emulsion particles and combining the seed emulsion aggregation method and the phase-control dispersion film formation technology, the painting emulsion with high performance is produced by utilizing conventional raw materials; and the compactness, mechanical property and the outdoor aging resistance problems of a paint film can be successfully solved. The painting emulsion can be used as a film formation substance for the inner-outer wall emulsion paint of different buildings and also can be used for preparing anticorrosion metal anti-corrosive primer and varnish of wooden doors and windows.
Description
technical field [0001] The present invention relates to a kind of preparation method of styrene-acrylic acid ester copolymer paint emulsion for elastic paint of building interior and exterior walls, in particular to a kind of phase-controlled film-forming styrene-acrylate type paint emulsion, the paint prepared from the emulsion and their The preparation method belongs to the field of architectural coatings. Background technique [0002] Styrene-acrylate copolymer-based paint emulsions (abbreviation: styrene-acrylic paint emulsions) occupy the main market of various architectural paint emulsions. In 2009, the consumption of various styrene-acrylic paint emulsions in my country was nearly 700,000 tons. The performance and cost of styrene-acrylic paint emulsion determine the main body of domestic architectural painting quality. In 1995, the German BASF company took the lead in introducing high-performance styrene-acrylic paint 296DS into the Chinese market, and many domestic ...
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IPC IPC(8): C08F220/18C08F220/14C08F212/08C08F220/56C08F2/26C09D125/14
Inventor 田立壮田海水高昊王志宽赵玉涛
Owner HENGSHUI XINGUANG CHEM