Preparation method of acrylate emulsion for novel wood lacquer coating

A technology of acrylic and wood paints, which is applied in the direction of antifouling/underwater paints, coatings, paints containing biocides, etc., and can solve the problems of easy yellowing of pressure-sensitive adhesives, damage to the endocrine system, poor tensile strength and peel strength And other problems, to achieve good strength, improve adhesion, good stability

Inactive Publication Date: 2020-01-10
江苏艾萨斯新型肥料工程技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The emulsifier is mainly composed of octyl, nonylphenol anion and non-ionic surfactants for the production of emulsions for wood lacquers. The pressure-sensitive adhesives commonly produced are prone to yellowing at high temperatures, and have

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Example 1: Pre-emulsion A: 1.5 ethyl acrylate, 1.5 methyl methacrylate, 32.0 butyl acrylate, 14.5 isooctyl acrylate, 0.5 sodium methacrylsulfonate, 0.5 sodium lauryl sulfate, methyl Acrylic acid 1.2, diacetone acrylamide 0.25, N-methylmaleimide 0.25, hydroxypropyl acrylate 1.5, vinyltrimethoxysilane 0.1, ammonium persulfate 0.1, deionized water 15.0; solution B: acryl alcohol poly Oxyethylene ether 0.8, ammonium persulfate 0.1, pH buffer (sodium bicarbonate) 0.03, deionized water 29.97; weigh 10% of the total weight of the pre-emulsion A and add it to B, heat up to 70°C, stir until blue light appears , the temperature was raised to 85°C, and the remaining pre-emulsion A, 0.15 of 2,2,4-trimethyl-1,3-pentanediol monoisobutyrate, and 0.05 of dodecyl mercaptan were added dropwise, and the dropping rate was controlled so that Finish dropping within 2 hours, keep warm for 3.0 hours, cool down, add a pH adjuster (ammonia water) to 40°C to adjust the pH to neutral, cool down an...

Embodiment 2

[0017] Pre-emulsion A: ethyl acrylate 1.5, methyl methacrylate 1.2, butyl acrylate 35.0, isooctyl acrylate 13.5, sodium dodecylbenzenesulfonate 0.5, sodium dodecyl sulfate 0.8, methacrylic acid 1.0, N,N-methylenebisacrylamide 0.25, N-cyclohexylmaleimide 0.25, hydroxypropyl acrylate 1.8, vinyltrimethoxysilane 0.12, ammonium persulfate 0.2, deionized water 15.0; solution B: Propyl alcohol polyoxyethylene ether 1.0, ammonium persulfate 0.1, pH buffer (sodium bicarbonate) 0.05, deionized water 27.48; weigh 8% of the total weight of the pre-emulsion A and add it to B, heat up to 70°C, and stir until Bluish light appears, heat up to 83°C, add dropwise the remaining pre-emulsion A, 0.2 of 2,2,4-trimethyl-1,3-pentanediol monoisobutyrate, 0.05 of dodecyl mercaptan, control The dropping rate is such that the dropping is completed within 2.5 hours, the temperature is kept for 1.0 hours, the temperature is lowered, and the pH value adjusting agent (ammonia water) is added to adjust the pH...

Embodiment 3

[0019] Pre-emulsion A: ethyl acrylate 1.5, methyl methacrylate 1.2, butyl acrylate 29.8, isooctyl acrylate 18.0, sodium dodecylbenzene sulfonate 0.8, sodium methacryl sulfonate 0.8, methacrylic acid 1.5 , N, N-methylenebisacrylamide 0.2, N-hydroxyethylmaleimide 0.25, hydroxypropyl acrylate 1.8, vinyltrimethoxysilane 0.15, ammonium persulfate 0.2, deionized water 15.0; solution B: Propyl alcohol polyoxyethylene ether 1.0, ammonium persulfate 0.1, pH buffer (sodium bicarbonate) 0.03, deionized water 27.57; weigh 12% of the total mass of pre-emulsion A and add it to B, heat up to 70°C, Continue to stir until blue light appears, heat up to 85°C, add dropwise the remaining pre-emulsion A, 2,2,4-trimethyl-1,3-pentanediol monoisobutyrate 0.08, dodecyl mercaptan 0.02, control the dropping rate so that the dripping is completed within 3.0 hours, keep warm for 2.0 hours, cool down, add a pH value regulator (ammonia water) to 40°C to adjust the pH value to neutral, cool down and discharg...

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PUM

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Abstract

The invention relates to a preparation method of an acrylate emulsion for a novel wood lacquer coating. According to the preparation method, a dianionic emulsifier composition is adopted as an acrylate emulsion seed emulsifier, and an alkylphenol-free hydroxyl ester is adopted as a reaction emulsifier. The acrylate emulsion is prepared by copolymerization of an alkene monomer, an emulsifier, an alkene functional group monomer, a cross-linking agent, vinyl silane, a persulfate, a coalescing agent and deionized water. According to the invention, one selected from diacetone acrylamide and Methylene-Bis-Acrylamide is introduced for copolymerization with a N-substituted maleimide combined cross-linking agent and vinyl silane coupling agent; the preparation method is safe and friendly to the environment; a prepared adhesion product possesses following advantages compared with a pressure-sensitive adhesive prepared from acrylate emulsion prepared by combining a traditional anionic emulsifierthat no yellowing is caused, stripping force is high and the like; and meanwhile, the elongation at break, the tensile strength and the stripping strength are greatly improved; meanwhile, the coalescing agent and an auxiliary coalescing agent are introduced, so that the applied wood lacquer coating has the characteristics of high drying speed, high hardness, transparency, stain resistance and thelike.

Description

technical field [0001] The invention relates to a novel acrylate emulsion for wood lacquer coatings, in particular to a novel acrylate emulsion for wood lacquer coatings which is environmentally friendly, fast in film formation and anti-pollution. Background technique [0002] Wooden products play an important role in interior decoration and outdoor beautification, but are easily corroded by external environments such as moisture and bacteria. At present, wood lacquer has been widely used in wood products, not only for decoration, but also to provide these wood products with good protection properties such as corrosion resistance and aging resistance. [0003] At present, the common wood coatings on the market are mainly solvent-based coatings. However, solvent-based coatings contain a large amount of volatile organic compounds (VOC), which not only seriously pollute the environment during use, but also seriously endanger human health. With the development of social econom...

Claims

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Application Information

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IPC IPC(8): C08F283/06C08F220/18C08F2/26C08F2/30C08F2/24C09D151/08C09D5/16
CPCC08F283/065C08F2/26C08F2/30C08F2/24C09D151/08C09D5/1662
Inventor 宋圣吉赵兵刘军
Owner 江苏艾萨斯新型肥料工程技术有限公司
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