Quick-drying weather-resistant high-solid-content acrylic resin and preparation method thereof

An acrylic resin, weather-resistant technology, used in coatings and other directions, can solve the problems of unsatisfactory drying speed and aging resistance, and achieve the effects of excellent aging resistance, excellent aging resistance and high solid content.

Active Publication Date: 2014-09-10
中山大桥化工集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the application properties of the acrylic resin prepared by this patent, such as drying speed and aging resistance, are not very satisfactory.

Method used

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  • Quick-drying weather-resistant high-solid-content acrylic resin and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] First, prepare the Macro monomer: weigh 90g of methyl methacrylate (MMA), 120g of hydroxyethyl methacrylate (HEMA), 140g of butyl methacrylate (BMA), butyl acetate 150g, 2.05g of azobisisobutyronitrile (AIBN), 100mg of dihydrated bis(difluoride borobenzenedione oxime) cobaltate (II) salt (COPhBF), mix them uniformly and add them into the reaction flask, Heat and stir at 75°C under nitrogen atmosphere, and react for 5 hours. The solid content of the obtained product is 68.4%, the GPC result Mn=1581, Mw / Mn=1.56.

[0027] Next, 150 g of trimethylbenzene and 50 g of glycidyl tertiary carbonate were added to a four-necked flask equipped with stirring and a condenser, stirred at a low speed and nitrogen was introduced, and the temperature was raised to 150°C. A mixed solution consisting of 500 g of a comonomer and 68 g of an initiator solution was uniformly added dropwise over 4 hours. Among them, the comonomers include: butyl methacrylate (BMA) 100g, isobornyl methacrylate...

Embodiment 2

[0031] The preparation of the macromonomer (Macro monomer) of embodiment 2 is identical with embodiment 1, and its difference only lies in the following steps:

[0032] Add 150 g of trimethylbenzene and 50 g of glycidyl tertiary carbonic acid ester (Cardura E10P) into a four-neck flask with a stirring and condenser, stir at a low speed and blow in nitrogen, and raise the temperature to 150°C. A mixed solution consisting of 500 g of a comonomer and 68 g of an initiator solution was uniformly added dropwise over 4 hours. Among them, the comonomers include: butyl methacrylate (BMA) 125g, isobornyl methacrylate (IBOMA) 75g, styrene (ST) 82g, hydroxyethyl methacrylate (HEMA) 152g, acrylic acid (AA ) 16g and macromonomer 50g; the initiator solution includes: 50g of butyl acetate, 9g of tert-butyl peroxybenzoate and 9g of di-tert-amyl peroxide.

[0033] After the dropwise addition was completed, it was incubated at a temperature of 150° C. for 30 minutes, then added an initiator solut...

Embodiment 3

[0036] The preparation of the macromonomer (Macro monomer) of embodiment 3 is identical with embodiment 1, and its difference only lies in the following steps:

[0037] Add 165 g of trimethylbenzene and 75 g of glycidyl tertiary carbonic acid ester (Cardura E10P) into a four-necked flask with a stirring and condenser, stir at a low speed and blow in nitrogen, and raise the temperature to 150°C. A mixed solution consisting of 500 g of a comonomer and 68 g of an initiator solution was uniformly added dropwise over 4 hours. Among them, the comonomer includes: methyl methacrylate (MMA) 60g, butyl methacrylate (BMA) 83g, isobornyl methacrylate (IBOMA) 50g, styrene (ST) 82g, methacrylate hydroxy Ethyl ester (HEMA) 152g, acrylic acid (AA) 23.2g and macromonomer 50g; the initiator solution includes: butyl acetate 50g, tert-butyl peroxybenzoate 9g and di-tert-amyl peroxide 9g.

[0038] After the dropwise addition was completed, it was incubated at a temperature of 150° C. for 30 minut...

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Abstract

The invention discloses a preparation method of a quick-drying weather-resistant high-solid-content acrylic resin, which comprises the following steps: 1) sequentially adding solvent and glycidyl tertiary carboxylic ester into a reactor while introducing protective nitrogen, and gradually heating to reaction temperature; 2) uniformly and dropwisely adding comonomer, initiator and solvent into the reactor, wherein the comonomer comprises 70-95% of unsaturated monomer and 5-30% of macromolecular monomer; and 3) after finishing dropwise addition, supplementing the initiator and solvent, keeping the temperature for 2 hours, cooling to 100 DEG C, filtering and discharging.. Compared with the prior art, the high-solid-content acrylic resin has the characteristics of low viscosity and high solid content; and the prepared paint has the advantages high drying rate and good weather resistance.

Description

technical field [0001] The invention belongs to the organic polymer paint manufacturing industry, and relates to a preparation method of a fast-drying and weather-resistant high-solid acrylic resin. Background technique [0002] With the increasing environmental protection regulations and increasingly tense energy use, the research and development of environmentally friendly coatings and coating technologies and the reduction of volatile organic compounds (VOC) in coating production and construction have become the most important coatings and resins at home and abroad. The focus of design research work. High-solid coatings are one of the varieties with better development prospects. This product reduces VOC emissions in coating production and construction, reduces pollution to the ecological environment, and saves coating costs at the same time. Since the 1990s, high-solid coatings have developed rapidly and their application scope has been continuously expanded. They are ma...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F265/06C08F220/18C08F212/08C08F220/28C08F220/06C08F8/00C08F220/14C09D151/00
Inventor 凌建雄洪昕林张新宇
Owner 中山大桥化工集团有限公司
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