Preparation method of high-performance water-soluble high-solid low-viscosity acrylic resin

A kind of acrylic resin, water-soluble technology, applied in paints containing biocide, anti-fouling/underwater coatings, coatings, etc., can solve the problem of poor flexibility and heat and humidity resistance of water-based acrylic resin coatings, and cannot meet the high-performance coating requirements and other problems, to achieve the effect of strong impact resistance, moderate molecular weight and high reactivity

Active Publication Date: 2018-11-23
INST OF APPLIED CHEM JIANGXI ACAD OF SCI +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These can only solve part of the problem and cannot meet the requirements of high-performance coating
[0004] The poor flexibility and moisture resistance of water-based acrylic resin coatings are problems that people pay attentio...

Method used

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  • Preparation method of high-performance water-soluble high-solid low-viscosity acrylic resin
  • Preparation method of high-performance water-soluble high-solid low-viscosity acrylic resin

Examples

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preparation example Construction

[0040] The present invention relates to a preparation method and application of a high-performance water-soluble high-solid and low-viscosity acrylic resin. The material formula used in the preparation method of the acrylic resin in this example is as follows: 7-12 parts of acrylic acid, 10-25 parts of n-butyl acrylate , 0-10 parts of n-butyl methacrylate, 10-20 parts of styrene, 10-30 parts of methyl methacrylate, 1-6 parts of laurate methacrylate, 2-10 parts of vinyl tertiary carbonate, methyl 26-35 parts of hydroxyethyl acrylate, 1-6 parts of methacryloxypropyl trimethoxysilane, 0.75-2.25 parts of chain transfer agent, 1.8-6.7 parts of initiator, 4.4-12 parts of amine neutralizer .

[0041] The steps of the preparation method of present embodiment acrylic resin are as follows:

[0042] (1) Prepare dry and clean reaction kettles and dripping kettles to ensure smooth pipelines, normal operation of instruments, valves, and motors, and normal use of steam, water cooling, stirr...

Embodiment 1

[0062] Take 40 parts of n-butanol and 23 parts of isopropanol into the reaction kettle, stir to fill with nitrogen, heat to reflux, and control the reaction temperature at 82±2°C; add 9 parts of acrylic acid, 10 parts of n-butyl acrylate, and 2 parts of vinyl tert-carbonate , 2 parts of laurate methacrylate, 15 parts of styrene, 28.5 parts of methyl methacrylate, 32.5 parts of hydroxyethyl methacrylate, 1.8 parts of dodecyl mercaptan, 3.6 parts of azobisisobutyronitrile Stir in the dripping kettle, fully mix and dissolve; 3.5 hours to complete the dripping; keep warm for 15 minutes, add 1 part of methacryloxypropyl trimethoxysilane and 2 parts of isopropanol into the dropping kettle and stir, and finish dripping for 15 minutes; continue to keep warm 1h, add 0.4 parts of azobisisobutyronitrile and 2 parts of ethanol into the dripping kettle and stir, fully mix and dissolve; after 0.5h of dripping, keep warm for 1h; Add 5.6 parts of N,N-dimethylethanolamine into the dripping ket...

Embodiment 2

[0064] Take 40 parts of propylene glycol methyl ether and 23 parts of ethylene glycol butyl ether into the reactor, stir to fill with nitrogen, heat to reflux, and control the reaction temperature at 91±2°C; add 9 parts of acrylic acid, 12 parts of n-butyl acrylate, vinyl tertiary 6 parts, 1 part of laurate methacrylate, 15 parts of styrene, 23.5 parts of methyl methacrylate, 32.5 parts of hydroxyethyl methacrylate, 1.25 parts of lauryl mercaptan, 1.8 parts of benzoyl peroxide Add to the dripping kettle and stir, fully mix and dissolve; 3.5 hours to complete the dripping; keep warm for 15 minutes, add 1 part of methacryloxypropyltrimethoxysilane and 2 parts of isopropanol to the dropping kettle and stir, and the dripping is completed for 15 minutes; continue Keep warm for 1h, add 0.2 parts of benzoyl peroxide, 1 part of ethyl acetate, and 1 part of isopropanol into the dripping kettle and stir, fully mix and dissolve; after 0.5h of dripping, keep warm for 1h; stop heating, pass...

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Abstract

The invention relates to a preparation method of a high-performance water-soluble high-solid low-viscosity acrylic resin. In a compound solvent system, a continuous-process free radical solution polymerization is adopted for preparing the acrylic resin, and the resin is endowed with water solubility. Modification is carried out by utilizing a tertiary carbonate ester, and a large branch structureis introduced, so that the intermolecular force is reduced, the resin viscosity is reduced, and the high-solid resin has lower viscosity. Through a tertiary carbonic acid group, the water resistance and the alcohol resistance of a paint film are remarkably increased, the performances such as the toughness and the impact resistance of the paint film are remarkably improved, and the influence on thehardness of the paint film is less. According to the preparation method of the high-performance water-soluble high-solid low-viscosity acrylic resin provided by the invention, organosilicone is usedfor modifying the acrylic resin, so that the performances such as humidity resistance and corrosion resistance of the paint film are improved; an amino resin is used as a curing agent for directly preparing a water-based amino acrylic acid baking paint, so that the performances such as hardness, fullness, water resistance, alcohol resistance and salt tolerance of the paint film are good, and the paint film is suitable for industrial coating in the industries of automobiles, bicycles, agricultural machinery and the like, an can be used for coating in the industries of fishing rods, wine bottles, dining tables and other industries with a certain humidity resistance and pollution resistance requirements.

Description

technical field [0001] The invention relates to a preparation method of a high-performance water-soluble high-solid and low-viscosity acrylic resin, belonging to the technical field of water-based industrial coatings. Background technique [0002] Water-based acrylic resin has good light resistance, weather resistance, light color, good heat resistance, chemical resistance and good construction performance, and is widely used in architectural latex paint and water-based industrial coatings. However, the coating film of water-based acrylic paint is hard and brittle, softened by heat, and insufficient water resistance is also exposed. [0003] According to the general method to prepare acrylic resin, high solid content and high viscosity, high hardness means brittleness, good flexibility means softness, poor water resistance and solvent resistance. For example, in order to reduce the viscosity of the resin and improve the flexibility of the resin, the publication number CN201...

Claims

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Application Information

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IPC IPC(8): C08F220/20C08F220/06C08F220/18C08F218/10C08F230/08C08F212/08C08F220/14C08F2/38C09D133/14C09D5/16C09D5/08
CPCC08F2/38C08F220/20C09D5/08C09D5/1662C09D143/04C08F220/06C08F220/1804C08F212/08C08F218/10C08F230/08C08F220/14C08F6/10C08F8/32C08F8/44C08F265/04C08F2800/20C08F2810/50C09D151/003C09D7/20C08F230/085C08L51/003C08F297/026C08F2810/20C09D153/00C09D7/43C09D7/45C09D7/47C09D7/63
Inventor 曾国屏王刚胡震宇张军王小玉
Owner INST OF APPLIED CHEM JIANGXI ACAD OF SCI
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